Alaska Standards for Fourth Grade Science

Animal Growth and Reproduction
A life cycle is the stages of development an organism goes through starting from an egg to growing into an adult. Living organisms each have their own unique way of reproducing, giving birth, growing, and developing. Read more...iWorksheets: 4Study Guides: 1Vocabulary: 4
Cells- The building blocks of living things
FreeCells are building blocks of life. All living things are made of cells. A unicellular organism is made up of only one cell while multicellular organisms are made up of only cells. Read more...iWorksheets: 4Study Guides: 1Vocabulary: 3
Classifying organisms
Scientific classification is the process of grouping living organisms into certain categories based on their characteristics, traits, and appearance. The order of scientific classification is kingdom, phylum, class, order, family, genus, and species. Each time we move to a different classification category, the groups get smaller and more specific. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 4
Did you Know... 4th grade
Did you know? There are over 600 named muscles in the human body. Your HEART is considered a muscle, a cardiac muscle. The largest bone in your body is your femur, which is your thigh bone. If you make a mark on the trunk of a tree, it will remain the same distance from the ground! Read more...iWorksheets: 3Study Guides: 1
Ecosystems and changes in ecosystems
What is an ecosystem? An ecosystem is the living and nonliving components of an environment and the way they interact with each other and their environment. There are several different ecosystems on the Earth. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 2
Invertebrates - Animals without Backbones
Animals are classified into groups so that scientists around the world can study them easier. Scientists classify animals into two major groups, vertebrates and invertebrates. Read more...iWorksheets: 4Study Guides: 1Vocabulary: 5
Light and Sound
Light is a form of energy that travels in waves. A reflection occurs when light rays bounce off a surface, such as when you see your reflection in a mirror. Absorption is when an object takes in light wave. Refraction is when light bends moving from one medium to another. Sound is a type of energy that travels in waves that is caused by vibrations. Vibrations are movements made rapidly back and forth. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 3
Organ systems
Your body is made up of many organs and systems that all work together to keep your body running properly: The Skeletal System, The Muscular System, The Circulatory System, The Respiratory System, The Digestive System, The Nervous System, The Excretory System. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 4
Plant growth and reproduction
Process of Reproduction. Fertilization, Seeds. Lesson Checkpoints: What is one reason a plant has nectar? What do mosses and ferns produce instead of seeds? What is the female organ of a flower called? Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1
Vertebrates - Animals with Backbones
Scientists classify animals into two categories depending on if the animal has a backbone or not. As you know, invertebrates are animals that do NOT have a backbone and vertebrates are animals that DO have a backbone. Vertebrates are divided by scientists into five classes: fish, amphibians, reptiles, birds, and mammals. Read more...iWorksheets: 4Study Guides: 1Vocabulary: 3

AK.A1. Science as Inquiry and Process (SA1, SA2, SA3)

[4] SA1.1. The student develops an understanding of the processes of science by asking questions, predicting, observing, describing, measuring, classifying, making generalizations, inferring and communicating.

Hands-on Lab Skills/Science Inquiry
When you conduct an investigation, you may make predictions, interpret your findings, draw conclusions, and justify your conclusions. When you conduct an experiment, you should collect data to help justify your conclusions. During an investigation, you may formulate and justify your predictions based on cause and effect relationships. A cause makes something else happen. An effect is what happens because of the cause. Read more...iWorksheets :3Study Guides :1
Math in Science
Whether you are measuring, calculating, creating graphs and charts, or using numbers in any way… that’s using your math skills. During many science investigations you may have to measure the length, width, height, or weight of different objects. You also may need to measure the temperature of the air or different liquids when completing a scientific investigation as well. Read more...iWorksheets :3Study Guides :1
The nature of science
Science process skills include observing, classifying, estimating, measuring, inferring, predicting, creating graphs, and developing models. Identify Dependent and Controlled Variables: A dependent variable is the variable that is being observed during an experiment. A control variable is the part of an experiment that you do not make any changes to which you can use to compare the other parts of your experiment to. Read more...iWorksheets :3Study Guides :1

[4] SA1.2. The student develops an understanding of the processes of science by observing, measuring and collecting data from explorations and using this information to classify, predict, and communicate.

Hands-on Lab Skills/Science Inquiry - 3rd grade
Science Process Skills: Observing, Classifying, Estimating, Predicting/Hypothesis, Making Inferences, Models, Investigating, Collecting Data, Interpreting Data. Scientific Method: Ask a question, Write an Hypothesis, Create a control variable, Conduct an Experiment, Record Your Data, Decide Your Final Answer, State Your Final Answer. Science Tools. Safety in Science. Read more...iWorksheets :3Study Guides :1Vocabularies :2
Hands-on Lab Skills/Science Inquiry
When you conduct an investigation, you may make predictions, interpret your findings, draw conclusions, and justify your conclusions. When you conduct an experiment, you should collect data to help justify your conclusions. During an investigation, you may formulate and justify your predictions based on cause and effect relationships. A cause makes something else happen. An effect is what happens because of the cause. Read more...iWorksheets :3Study Guides :1
The nature of science
Science process skills include observing, classifying, estimating, measuring, inferring, predicting, creating graphs, and developing models. Identify Dependent and Controlled Variables: A dependent variable is the variable that is being observed during an experiment. A control variable is the part of an experiment that you do not make any changes to which you can use to compare the other parts of your experiment to. Read more...iWorksheets :3Study Guides :1

AK.B1. Concepts of Physical Science (SB1, SB2, SB3, SB4)

[4] SB1.1. The student demonstrates an understanding of the structure and properties of matter by identifying and comparing the characteristics of gases, liquids, and solids.

Matter and its properties
Everything around us is made out matter. Matter is anything that takes up space and has mass. All matter is made up of many different kinds of particles that are combined together in different ways. A property of matter is a feature, trait, or characteristic. Read more...iWorksheets :4Study Guides :1Vocabularies :1
Matter
Matter is ALL Around Us! Matter is anything that takes up space and has mass. Matter is made up of atoms. Atoms are the basic building blocks of matter and make up all objects. Matter change states from solid, liquid, or gas. Read more...iWorksheets :3Study Guides :1Vocabularies :2
Science worksheets: Solids, liquids and gases.
Solid, liquid, and gas are all states of matter. The molecules in solids are tightly packed together. The molecules in liquids are not as close as those in solids; they have a little more room to move around. The molecules in gases are far apart. Gases can fill any size room or any size container. Read more...iWorksheets :3Study Guides :1Vocabularies :1

[4] SB2.1. The student demonstrates an understanding of how energy can be transformed, transferred, and conserved by investigating the effectiveness of different insulating and conducting materials with respect to heat flow and record the results. (L)

Properties of matter and Energy
What is matter? Matter is anything that takes up space and has mass. Kinetic energy is energy that is happening now; it is energy in motion. Potential energy is energy that is waiting to happen; it is stored energy. How does heat get transferred: By conduction, by convection and by radiation. Read more...iWorksheets :3Study Guides :1Vocabularies :2
All About Energy
Worksheets :2Vocabularies :4

[4] SB3.1. The student demonstrates an understanding of the interactions between matter and energy and the effects of these interactions on systems by explaining that temperature changes cause changes in phases of substances (e.g., ice changing to liquid water and liquid water to water vapor).

Science worksheets: Solids, liquids and gases.
Solid, liquid, and gas are all states of matter. The molecules in solids are tightly packed together. The molecules in liquids are not as close as those in solids; they have a little more room to move around. The molecules in gases are far apart. Gases can fill any size room or any size container. Read more...iWorksheets :3Study Guides :1Vocabularies :1

[4] SB4.1. The student demonstrates an understanding of motions, forces, their characteristics, relationships, and effects by simulating that changes in speed or direction of motion are caused by forces. (L)

Forces and motion-how things move
Motion is the process of an object changing place or position. Position refers to an object's location. The position of an object all depends on how a person is looking at the object and what it us being compared to, which is known as an object's relative position. Read more...iWorksheets :3Study Guides :1Vocabularies :2
Force, motion and energy
Motion is the process of an object changing place or position. A force is a push or pull upon an object. Speed refers to the rate an object changes position. To accelerate means to go faster; decelerate means to slow down. Read more...iWorksheets :4Study Guides :1Vocabularies :3
Newton's Laws of motion
What is motion? Motion is the process of an object changing its place or its position. Motion is not speed. Speed is the rate an object changes position. Newton's law of motion. Read more...iWorksheets :4Study Guides :1Vocabularies :2
All About Energy
Worksheets :2Vocabularies :4

AK.C1. Concepts of Life Science (SC1, SC2, SC3)

[4] SC1.1. The student demonstrates an understanding of how science explains changes in life forms over time, including genetics, heredity, the process of natural selection and biological evolution by showing the relationship between physical characteristics of Alaskan organisms and the environment in which they live.

How animals grow and change and live
Animals have certain traits which help them survive in their environment. These survival traits are called adaptations. Many adaptations are inherited, which means they are passed on from the parents of animal. Many animals have adaptations for eating such as the way a bird’s beak is shaped. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Introduction to animals
Animals have particular body parts and structures to help them survive in their Earth environment. For instance, animals have certain body parts such as legs or wings that help them move, and mouths or trunks or beaks that help them drink water. Read more...iWorksheets :3Study Guides :1Vocabularies :4
Plant Responses and Adaptations
A plant can respond to the conditions of its environment. A plant can change its position and grow in a certain direction or manner to meet its survival needs and adapt to a varying environment. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Animal Diversity and Adaptations
FreeHere are some examples of the systems that animals and humans have in common: Integumentary system, Muscular system, Endocrine system, Nervous system, Circulatory system, Respiratory system, Digestive system, Excretory System, Reproductive system, Immune system, Skeletal System. Read more...iWorksheets :3Study Guides :1Vocabularies :5
Life Cycles of Plants and Animals
Worksheets :2Vocabularies :2

[4] SC1.2. The student demonstrates an understanding of how science explains changes in life forms over time, including genetics, heredity, the process of natural selection and biological evolution by describing fossil evidence (e.g., casts, track ways, imprints, etc.) of extinct organisms.

Fossils and extinct animals
Many animals have become extinct over millions of years. Extinct means no longer living on Earth. Animas that are extinct include dinosaurs, saber-toothed tigers, and dodo birds. Read more...iWorksheets :3Study Guides :1Vocabularies :4

[4] SC2.2. The student demonstrates an understanding of the structure, function, behavior, development, life cycles, and diversity of living organisms by describing the basic characteristics and requirements of living things.

Main Parts of Plants
A plant has many important parts, such as its roots, stem, leaves, and flower. Each part of a plant has many functions that make it possible for a plant to live. Read more...iWorksheets :4Study Guides :1Vocabularies :2
How do plants grow?
Plants need many essential things in order to grow, such as: water, air, nutrients, sunlight, and warm temperature. Read more...iWorksheets :4Study Guides :1Vocabularies :2
How animals grow and change and live
Animals have certain traits which help them survive in their environment. These survival traits are called adaptations. Many adaptations are inherited, which means they are passed on from the parents of animal. Many animals have adaptations for eating such as the way a bird’s beak is shaped. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Did you Know... 3rd grade
There are so many amazing scientific facts out there, waiting to be discovered by you! Check out some of the incredible ‘Did You Know? facts that have to do with many of the science topics you learn about in 3rd Grade. Read more...iWorksheets :3Study Guides :1
Plant Structure and function
Plants are living organisms made up of cells. Plants need sunlight and water to live and grow healthy. A plant has different parts that are all important in keeping the plant alive and healthy: Roots, Stem, Leaves. A plant’s roots collect water and minerals from soil for the rest of the plant. The main job of a plant’s stem is to carry water and minerals from the roots to the rest of the plant. Read more...iWorksheets :3Study Guides :1Vocabularies :4
Roots, Stems and Leaves
Plants have two different root systems: a Taproot and a Fibrous Root system. Leaves of a plant are made of plant organs and tissues. The top layer of leaf, which protects the leaf, is called its epidermis. Leaves have tiny openings underneath them called the stomata which let air and water in and out of the leaf. Read more...iWorksheets :4Study Guides :1Vocabularies :2
Life Cycles of Plants and Animals
Worksheets :2Vocabularies :2

[4] SC3.1. The student demonstrates an understanding that all organisms are linked to each other and their physical environments through the transfer and transformation of matter and energy by identifying examples of living and non-living things and the relationship between them (e.g., living things need water, herbivores need plants).

How animals grow and change and live
Animals have certain traits which help them survive in their environment. These survival traits are called adaptations. Many adaptations are inherited, which means they are passed on from the parents of animal. Many animals have adaptations for eating such as the way a bird’s beak is shaped. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Relationships among living things
Living things interact in many ways. These interactions can help, harm, or do nothing to a living thing. Read more...iWorksheets :4Study Guides :1Vocabularies :1
Food webs/food chains
We all need energy. Every living organism on Earth needs energy to live, including plants, animals and us! The main energy source for all living things on Earth is the Sun. Read more...iWorksheets :4Study Guides :1Vocabularies :2
What are Ecosystems?
An ecosystem is a community made up of living organisms and nonliving components such as air, water, and mineral soil. Read more...iWorksheets :2Vocabularies :4
Life Cycles of Plants and Animals
Worksheets :2Vocabularies :2

[4] SC3.2. The student demonstrates an understanding that all organisms are linked to each other and their physical environments through the transfer and transformation of matter and energy by identifying a simple food chain of familiar plans and animals, diagramming how energy flows through it, and describing the effects of removing one link.

Relationships among living things
Living things interact in many ways. These interactions can help, harm, or do nothing to a living thing. Read more...iWorksheets :4Study Guides :1Vocabularies :1
Food webs/food chains
We all need energy. Every living organism on Earth needs energy to live, including plants, animals and us! The main energy source for all living things on Earth is the Sun. Read more...iWorksheets :4Study Guides :1Vocabularies :2
Energy and ecosystems
An ecosystem includes all the living and non-living things in an area. This includes populations and communities of many different animals. Read more...iWorksheets :3Study Guides :1Vocabularies :3
Interactions among living things
An important and essential interaction among living things involves the flow of energy within an environment. All living organisms need energy to survive! Energy moves through an environment through food chains and food webs. Read more...iWorksheets :3Study Guides :1Vocabularies :2
What are Ecosystems?
An ecosystem is a community made up of living organisms and nonliving components such as air, water, and mineral soil. Read more...iWorksheets :2Vocabularies :4
All About Energy
Worksheets :2Vocabularies :4

AK.D1. Concepts of Earth Science (SD1, SD2, SD3, SD4)

[4] SD1.1. The student demonstrates an understanding of geochemical cycles by describing that most smaller rocks come from the breaking and weathering of larger rocks as part of the rock cycle.

Rocks, Minerals, and soil
Rocks are solid material found in nature made up of minerals. A mineral is a natural material usually found in the ground. A rock has physical properties like color and composition, or what exact minerals make up the rock. Read more...iWorksheets :4Study Guides :1Vocabularies :2
Did you Know... 3rd grade
There are so many amazing scientific facts out there, waiting to be discovered by you! Check out some of the incredible ‘Did You Know? facts that have to do with many of the science topics you learn about in 3rd Grade. Read more...iWorksheets :3Study Guides :1
Rocks and minerals
FreeWhat is in a Rock? Rocks are made up of many tiny pieces of minerals. What are Minerals? Minerals are natural, nonliving crystals. They come in many sizes, shapes, and colors. Types of Rocks: Sedimentary Rocks, Igneous Rocks, Metamorphic Rocks. The Rock Cycle. Read more...iWorksheets :4Study Guides :1Vocabularies :4
Landforms, Rocks and soil
Landsforms are features that make up the Earth's surface. They include mountains, plateaus, canyons, deltas, hills, valleys, and more... The Rock cycle, Volcanoes. How do Earthquakes happen? Read more...iWorksheets :4Study Guides :1Vocabularies :4
How Does the Earth's Surface Change?
Earth Structure and Processes Read more...iWorksheets :2Vocabularies :3

[4] SD1.2. The student demonstrates an understanding of geochemical cycles by recognizing the physical properties of water as they relate to the rock cycle.

Rocks, Minerals, and soil
Rocks are solid material found in nature made up of minerals. A mineral is a natural material usually found in the ground. A rock has physical properties like color and composition, or what exact minerals make up the rock. Read more...iWorksheets :4Study Guides :1Vocabularies :2
Did you Know... 3rd grade
There are so many amazing scientific facts out there, waiting to be discovered by you! Check out some of the incredible ‘Did You Know? facts that have to do with many of the science topics you learn about in 3rd Grade. Read more...iWorksheets :3Study Guides :1
Rocks and minerals
FreeWhat is in a Rock? Rocks are made up of many tiny pieces of minerals. What are Minerals? Minerals are natural, nonliving crystals. They come in many sizes, shapes, and colors. Types of Rocks: Sedimentary Rocks, Igneous Rocks, Metamorphic Rocks. The Rock Cycle. Read more...iWorksheets :4Study Guides :1Vocabularies :4
Landforms, Rocks and soil
Landsforms are features that make up the Earth's surface. They include mountains, plateaus, canyons, deltas, hills, valleys, and more... The Rock cycle, Volcanoes. How do Earthquakes happen? Read more...iWorksheets :4Study Guides :1Vocabularies :4
How Does the Earth's Surface Change?
Earth Structure and Processes Read more...iWorksheets :2Vocabularies :3

[4] SD2.1. The student demonstrates an understanding of the forces that shape Earth by observing models of how waves, wind, water, and ice shape and reshape the Earth's surface by eroding rock and soil. (L)

Changes on earth
A glacier is a slow moving large body of ice. A volcano is an opening in the Earth’s crust from which hot, melted rock forcefully comes out when pressure is built up inside the Earth. An earthquake is a sudden shift in the Earth’s crust that causes the ground to shake and vibrate violently. Weathering is the process of rocks being changed over time by conditions such as rain, snow, ice, pressure.Read more...iWorksheets :4Study Guides :1Vocabularies :2
Earth - Inside and Out
Let's look at the Earth from the inside out...
The Earth is made up three main layers called crust, mantle, and core. Read more...
iWorksheets :4Study Guides :1Vocabularies :9
Minerals of Earth's crust
Minerals are solid elements formed naturally in the Earth’s surface. Every mineral has a unique chemical composition – a mix of the chemicals that formed it. Rocks are made up of minerals, sometimes more than one kind of mineral! Read more...iWorksheets :3Study Guides :1Vocabularies :4
How Does the Earth's Surface Change?
Earth Structure and Processes Read more...iWorksheets :2Vocabularies :3

[4] SD2.2. The student demonstrates an understanding of the forces that shape Earth by identifying causes (i.e., earthquakes, tsunamis, volcanoes, floods, landslides, and avalanches) of rapid changes on the surface.

Changes on earth
A glacier is a slow moving large body of ice. A volcano is an opening in the Earth’s crust from which hot, melted rock forcefully comes out when pressure is built up inside the Earth. An earthquake is a sudden shift in the Earth’s crust that causes the ground to shake and vibrate violently. Weathering is the process of rocks being changed over time by conditions such as rain, snow, ice, pressure.Read more...iWorksheets :4Study Guides :1Vocabularies :2
Earth - Inside and Out
Let's look at the Earth from the inside out...
The Earth is made up three main layers called crust, mantle, and core. Read more...
iWorksheets :4Study Guides :1Vocabularies :9
Weather and Climate
Many factors affect the weather such as the sun, atmosphere, temperature, water, and air pressure. When air moves from an area of high pressure to a place with low pressure, WIND is created. The movement and interaction of air masses cause most weather conditions. Climate: The word climate refers to the typical weather throughout the year in the same area. Read more...iWorksheets :4Study Guides :1Vocabularies :4
Landforms, Rocks and soil
Landsforms are features that make up the Earth's surface. They include mountains, plateaus, canyons, deltas, hills, valleys, and more... The Rock cycle, Volcanoes. How do Earthquakes happen? Read more...iWorksheets :4Study Guides :1Vocabularies :4
Minerals of Earth's crust
Minerals are solid elements formed naturally in the Earth’s surface. Every mineral has a unique chemical composition – a mix of the chemicals that formed it. Rocks are made up of minerals, sometimes more than one kind of mineral! Read more...iWorksheets :3Study Guides :1Vocabularies :4
How Does the Earth's Surface Change?
Earth Structure and Processes Read more...iWorksheets :2Vocabularies :3

[4] SD3.1. The student demonstrates an understanding of cycles influenced by energy from the sun and by Earth's position and motion in our solar system by recognizing changes to length of daylight over time and its relationship to seasons.

Our Solar system and beyond
What Can Be Found in the Solar System? A planet is a large body that revolves around the Sun. Asteroids, comets and meteors are made of pieces of rock and ice. Asteroids are small pieces of rock which orbit around the Sun. Comets are made of ice and rock. The “tail” of a comet is made of vaporized gases and dust that flow behind them as they fly through space at a VERY fast pace! Read more...iWorksheets :3Study Guides :1Vocabularies :3

[4] SD4.1. The student demonstrates an understanding of the theories regarding the origin and evolution of the universe by recognizing that stars are like the sun but are so far away that they look like points of light.

Our Solar system and beyond
What Can Be Found in the Solar System? A planet is a large body that revolves around the Sun. Asteroids, comets and meteors are made of pieces of rock and ice. Asteroids are small pieces of rock which orbit around the Sun. Comets are made of ice and rock. The “tail” of a comet is made of vaporized gases and dust that flow behind them as they fly through space at a VERY fast pace! Read more...iWorksheets :3Study Guides :1Vocabularies :3

[4] SD4.2. The student demonstrates an understanding of the theories regarding the origin and evolution of the universe by recognizing that objects have properties, locations, and movements that can be observed and described.

Earth in space
FreeThe Sun, which is a star, is Earth's source of heat and light. The earth travels in circles around the Sun. The Earth’s rotation every 24 hours results in day and night on Earth. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Our Solar system and beyond
What Can Be Found in the Solar System? A planet is a large body that revolves around the Sun. Asteroids, comets and meteors are made of pieces of rock and ice. Asteroids are small pieces of rock which orbit around the Sun. Comets are made of ice and rock. The “tail” of a comet is made of vaporized gases and dust that flow behind them as they fly through space at a VERY fast pace! Read more...iWorksheets :3Study Guides :1Vocabularies :3

AK.SA. Science as Inquiry and Process: A student should understand and be able to apply the processes and applications of scientific inquiry. A student who meets the content standard should:

SA1. Develop an understanding of the processes of science used to investigate problems, design and conduct repeatable scientific investigations, and defend scientific arguments.

Hands-on Lab Skills/Science Inquiry - 3rd grade
Science Process Skills: Observing, Classifying, Estimating, Predicting/Hypothesis, Making Inferences, Models, Investigating, Collecting Data, Interpreting Data. Scientific Method: Ask a question, Write an Hypothesis, Create a control variable, Conduct an Experiment, Record Your Data, Decide Your Final Answer, State Your Final Answer. Science Tools. Safety in Science. Read more...iWorksheets :3Study Guides :1Vocabularies :2
Hands-on Lab Skills/Science Inquiry
When you conduct an investigation, you may make predictions, interpret your findings, draw conclusions, and justify your conclusions. When you conduct an experiment, you should collect data to help justify your conclusions. During an investigation, you may formulate and justify your predictions based on cause and effect relationships. A cause makes something else happen. An effect is what happens because of the cause. Read more...iWorksheets :3Study Guides :1
The nature of science
Science process skills include observing, classifying, estimating, measuring, inferring, predicting, creating graphs, and developing models. Identify Dependent and Controlled Variables: A dependent variable is the variable that is being observed during an experiment. A control variable is the part of an experiment that you do not make any changes to which you can use to compare the other parts of your experiment to. Read more...iWorksheets :3Study Guides :1

AK.SB. Concepts of Physical Science: A student should understand and be able to apply the concepts, models, theories, universal principles, and facts that explain the physical world. A student who meets the content standard should:

SB1. Develop an understanding of the characteristic properties of matter and the relationship of these properties to their structure and behavior.

Matter and its properties
Everything around us is made out matter. Matter is anything that takes up space and has mass. All matter is made up of many different kinds of particles that are combined together in different ways. A property of matter is a feature, trait, or characteristic. Read more...iWorksheets :4Study Guides :1Vocabularies :1
Science worksheets: Solids, liquids and gases.
Solid, liquid, and gas are all states of matter. The molecules in solids are tightly packed together. The molecules in liquids are not as close as those in solids; they have a little more room to move around. The molecules in gases are far apart. Gases can fill any size room or any size container. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Science Worksheets: Chemical and physical changes of matter
A chemical change is a change in which one kind of substance is changed into a different kind of substance. Chemical changes produce substances that were not there when you started. You can’t reverse or undo a chemical change. The substance or object involved in physical change is the same before and after the change (unlike a chemical change). The change is not permanent and can be undone. Read more...iWorksheets :3Study Guides :1Vocabularies :1

SB2. Develop an understanding that energy appears in different forms, can be transformed from one form to another, can be transferred or moved from one place or system to another, may be unavailable for use, and is ultimately conserved.

Electricity and magnetism
Electricity is the flow of electrical charge. Atoms are made of three different particles, of which some have a positive charge, some have a negative charge, and some have no charge at all. Static Electricity is the imbalance of positive or negative charges between objects. If two objects have opposite charges, they’ll pull toward each other. Read more...iWorksheets :4Study Guides :1Vocabularies :2

SB3. Develop an understanding of the interactions between matter and energy, including physical, chemical, and nuclear changes, and the effects of these interactions on physical systems.

Changes in matter
A physical change is when something changes its appearance without changing its makeup. An example of a physical change is chopping wood. An example of a chemical change is burning the wood. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Matter
Matter is ALL Around Us! Matter is anything that takes up space and has mass. Matter is made up of atoms. Atoms are the basic building blocks of matter and make up all objects. Matter change states from solid, liquid, or gas. Read more...iWorksheets :3Study Guides :1Vocabularies :2
Science Worksheets: Chemical and physical changes of matter
A chemical change is a change in which one kind of substance is changed into a different kind of substance. Chemical changes produce substances that were not there when you started. You can’t reverse or undo a chemical change. The substance or object involved in physical change is the same before and after the change (unlike a chemical change). The change is not permanent and can be undone. Read more...iWorksheets :3Study Guides :1Vocabularies :1

SB4. Develop an understanding of motions, forces, their characteristics and relationships, and natural forces and their effects.

Forces and motion-how things move
Motion is the process of an object changing place or position. Position refers to an object's location. The position of an object all depends on how a person is looking at the object and what it us being compared to, which is known as an object's relative position. Read more...iWorksheets :3Study Guides :1Vocabularies :2
Force, motion and energy
Motion is the process of an object changing place or position. A force is a push or pull upon an object. Speed refers to the rate an object changes position. To accelerate means to go faster; decelerate means to slow down. Read more...iWorksheets :4Study Guides :1Vocabularies :3
Newton's Laws of motion
What is motion? Motion is the process of an object changing its place or its position. Motion is not speed. Speed is the rate an object changes position. Newton's law of motion. Read more...iWorksheets :4Study Guides :1Vocabularies :2
All About Energy
Worksheets :2Vocabularies :4

AK.SC. Concepts of Life Science: A student should understand and be able to apply the concepts, models, theories, facts, evidence, systems, and processes of life science. A student who meets the content standard should:

SC2. Develop an understanding of the structure, function, behavior, development, life cycles, and diversity of living organisms.

Animal Diversity and Adaptations
FreeHere are some examples of the systems that animals and humans have in common: Integumentary system, Muscular system, Endocrine system, Nervous system, Circulatory system, Respiratory system, Digestive system, Excretory System, Reproductive system, Immune system, Skeletal System. Read more...iWorksheets :3Study Guides :1Vocabularies :5

SC3. Develop an understanding that all organisms are linked to each other and their physical environments through the transfer and transformation of matter and energy.

Relationships among living things
Living things interact in many ways. These interactions can help, harm, or do nothing to a living thing. Read more...iWorksheets :4Study Guides :1Vocabularies :1
Science Worksheets: Water.
All living things need water to survive and to grow. For example, plants need water to make their own food, while fish need to live in water. The human body is made up of about 2/3 water. Water comes in three forms: liquid, solid, and gas. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Food webs/food chains
We all need energy. Every living organism on Earth needs energy to live, including plants, animals and us! The main energy source for all living things on Earth is the Sun. Read more...iWorksheets :4Study Guides :1Vocabularies :2
Earth's Waters
Did you know that three quarters (3/4) of Earth is covered by water? Freshwater is water containing only a very little amount of salt. Oceans are made of salt water. Ninety-seven percent (97%) of the Earth’s water is saltwater. Throughout the water cycle, water can be solid, liquid, and a gas. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Interactions among living things
An important and essential interaction among living things involves the flow of energy within an environment. All living organisms need energy to survive! Energy moves through an environment through food chains and food webs. Read more...iWorksheets :3Study Guides :1Vocabularies :2
Cycles of life and Biomes
The Nitrogen Cycle Process: Nitrogen is taken in by plants through their roots, animals eat plants, and the nitrogen is passed along the food chain to animals. Herbivores get nitrogen by eating plants. Carnivores get nitrogen by eating herbivores. Nitrogen is returned to the soil when an organism dies – decomposers break down the dead organisms and change the nitrogen compounds in the dead organism’s body into the kind plants can use. Read more...iWorksheets :4Study Guides :1Vocabularies :2
What are Ecosystems?
An ecosystem is a community made up of living organisms and nonliving components such as air, water, and mineral soil. Read more...iWorksheets :2Vocabularies :4
Life Cycles of Plants and Animals
Worksheets :2Vocabularies :2
How Does the Earth's Surface Change?
Earth Structure and Processes Read more...iWorksheets :2Vocabularies :3

AK.SD. Concepts of Earth Science: A student should understand and be able to apply the concepts, processes, theories, models, evidence, and systems of earth and space sciences. A student who meets the content standard should:

SD1. Develop an understanding of Earth's geochemical cycles.

Science Worksheets: Water.
All living things need water to survive and to grow. For example, plants need water to make their own food, while fish need to live in water. The human body is made up of about 2/3 water. Water comes in three forms: liquid, solid, and gas. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Earth's Waters
Did you know that three quarters (3/4) of Earth is covered by water? Freshwater is water containing only a very little amount of salt. Oceans are made of salt water. Ninety-seven percent (97%) of the Earth’s water is saltwater. Throughout the water cycle, water can be solid, liquid, and a gas. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Earth's freshwater and atmosphere
Planet Earth (the planet on which we happen to live) spins on an imaginary line called an axis. One spin around on its axis is called a revolution. As the earth rotates, the areas facing the Sun slowly change, and that means the time of day and the temperatures change.The sun is the main energy supply for the water cycle. Read more...iWorksheets :4Study Guides :1Vocabularies :3
How Does the Earth's Surface Change?
Earth Structure and Processes Read more...iWorksheets :2Vocabularies :3

SD2. Develop an understanding of the origins, ongoing processes, and forces that shape the structure, composition, and physical history of the Earth.

Minerals of Earth's crust
Minerals are solid elements formed naturally in the Earth’s surface. Every mineral has a unique chemical composition – a mix of the chemicals that formed it. Rocks are made up of minerals, sometimes more than one kind of mineral! Read more...iWorksheets :3Study Guides :1Vocabularies :4

SD3. Develop an understanding of the cyclical changes controlled by energy from the sun and by Earth's position and motion in our solar system.

Earth in space
FreeThe Sun, which is a star, is Earth's source of heat and light. The earth travels in circles around the Sun. The Earth’s rotation every 24 hours results in day and night on Earth. Read more...iWorksheets :3Study Guides :1Vocabularies :1
Our Solar system and beyond
What Can Be Found in the Solar System? A planet is a large body that revolves around the Sun. Asteroids, comets and meteors are made of pieces of rock and ice. Asteroids are small pieces of rock which orbit around the Sun. Comets are made of ice and rock. The “tail” of a comet is made of vaporized gases and dust that flow behind them as they fly through space at a VERY fast pace! Read more...iWorksheets :3Study Guides :1Vocabularies :3
Earth's freshwater and atmosphere
Planet Earth (the planet on which we happen to live) spins on an imaginary line called an axis. One spin around on its axis is called a revolution. As the earth rotates, the areas facing the Sun slowly change, and that means the time of day and the temperatures change.The sun is the main energy supply for the water cycle. Read more...iWorksheets :4Study Guides :1Vocabularies :3
The solar system
All planets in our solar system rotate and they all revolve around the Sun. Inner planets: Mercury, Venus, Earth. Outer planets: Jupiter, Saturn, Uranus, Neptune. Comets are made of ice and rock. They have four parts: a nucleus which is the solid portion of the comet and is made of dust and ice, a coma which is a cloud of dust and evaporated gases, an ion tail and a dust tail. Read more...iWorksheets :3Study Guides :1Vocabularies :3
How Does the Earth's Surface Change?
Earth Structure and Processes Read more...iWorksheets :2Vocabularies :3

AK.SG. History and Nature of Science: A student should understand the history and nature of science. A student who meets the content standard should:

SG1. Develop an understanding that historical perspectives of scientific explanations demonstrate that scientific knowledge changes over time, building on prior knowledge.

Science in our world
Have you ever seen a meteor shower? Meteors are small fragments of debris from space that enter the Earth's atmosphere at extremely high speed. They then turn into a vapor r leaving a streak of light that disappears quickly. You hear on the radio that a high air pressure system will be moving in tomorrow, which means there is a very good chance of clear skies. Read more...iWorksheets :3Study Guides :1Vocabularies :1

SG3. Develop an understanding that scientific knowledge is ongoing and subject to change as new evidence becomes available through experimental and/or observational confirmation(s).

Science in our world
Have you ever seen a meteor shower? Meteors are small fragments of debris from space that enter the Earth's atmosphere at extremely high speed. They then turn into a vapor r leaving a streak of light that disappears quickly. You hear on the radio that a high air pressure system will be moving in tomorrow, which means there is a very good chance of clear skies. Read more...iWorksheets :3Study Guides :1Vocabularies :1