Missouri Learning 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 Sets: 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 Sets: 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 Sets: 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
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: 1Vocabulary Sets: 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 Sets: 2
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: 1Vocabulary Sets: 2
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: 1Vocabulary Sets: 4
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
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: 1Vocabulary Sets: 4
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 Sets: 5
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
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 Sets: 4
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: 1Vocabulary Sets: 3
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 Sets: 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: 1Vocabulary Sets: 4
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: 1Vocabulary Sets: 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 Sets: 3
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: 1Vocabulary Sets: 4

MO.4.PS2. Motion and Stability: Forces and Interactions

4.PS2.A. Forces and Motion

4.PS2.A.1. Make observations and/or measurements of an object’s motion to provide evidence that a pattern can be used to predict future motion.
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 :1Vocabulary :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 :1Vocabulary :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 :1Vocabulary :2
4.PS2.A.2. Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object. [Clarification Statement: Examples could include an unbalanced force on one side of a ball can make it start moving; and, balanced forces pushing on a box from both sides will not produce any motion at all.]
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 :1Vocabulary :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 :1Vocabulary :2

4.PS2.B. Types of Interaction

4.PS2.B.1. Plan and conduct a fair test to compare and contrast the forces (measured by a spring scale in Newtons) required to overcome friction when an object moves over different surfaces (i.e., rough/smooth).
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 :1Vocabulary :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 :1Vocabulary :3
4.PS2.B.2. Predict how changes in either the amount of force applied to an object or the mass of the object affects the motion (speed and direction) of the object.
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 :1Vocabulary :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 :1Vocabulary :2

MO.4.PS3. Energy

4.PS3.A. Definitions of Energy

4.PS3.A.1. Use evidence to construct an explanation relating the speed of an object to the energy of that object.
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 :1Vocabulary :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 :1Vocabulary :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 :1Vocabulary :2

4.PS3.B. Conservation of Energy and Energy Transfer

4.PS3.B.1. Provide evidence to construct an explanation of an energy transformation(e.g. temperature change, light, sound, motion, and magnetic effects)
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 :1Vocabulary :2
4.PS3.B.2. Apply scientific ideas to design, test, and refine a device that converts energy from one form to another. [Clarification Statement: Examples of devices could include electric circuits that convert electrical energy into motion energy of a vehicle, light, or sound; and, a passive solar heater that converts light into heat. Examples of constraints could include the materials, cost, or time to design the device.]
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 :1Vocabulary :2

4.PS3.C. Relationship Between Energy and Forces

4.PS3.C.1. Use models to explain that simple machines change the amount of effort force and/or direction of force. [Clarification Statement: memorization of a simple machine is not the focus, concept builds on the application of force and motion .]
Work and machines
Work is when you use force upon an object causing the object to move. The amount of work you do has to do with how much force you need to use. Simple machines make doing work easier but they never decrease the amount of work that needs to be done. Read more...iWorksheets :4Study Guides :1Vocabulary :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
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 :1Vocabulary :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 :1Vocabulary :2

MO.4.PS4. Waves and Their Applications in technologies for Information Transfer

4.PS4.A. Wave Properties

4.PS4.A.1. Develop a model of waves to describe patterns in terms of amplitude or wavelength and that waves can cause objects to move. (Boundary: The terms amplitude and wavelength should not be assessed.) [Clarification Statement: Examples of models could include diagrams, analogies, and physical models using wire to illustrate wavelength and amplitude of waves.]
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

MO.4.LS1. From Molecules to Organisms: Structure and Processes

4.LS1.A. Structure and Function

4.LS1.A.1. Construct an argument that plants and animals have internal and external structures that function to support survival, growth, behavior, and plant reproduction. [Clarification Statement: Examples of structures could include thorns, stems, roots, colored petals, heart, stomach, lung, brain, and skin.]
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 :1Vocabulary :2
How do plants grow?
Plants need many essential things in order to grow, such as: water, air, nutrients, sunlight, and warm temperature. Plants need their space too! If a plant grows too close to other plants, it may not grow healthy and strong, because the plants may compete over the available water, nutrients, and space in the soil for their roots to grow. Read more...iWorksheets :4Study Guides :1Vocabulary :2
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 :1Vocabulary :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 :1Vocabulary :2

MO.4.ESS2. Earth's Systems

4.ESS2.A. Earth Materials and Systems

4.ESS2.A.1. Plan and conduct scientific investigations or simulations to provide evidence how natural processes (e.g. weathering and erosion) shape Earth's surfaces.
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 :1Vocabulary :2
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 :1Vocabulary :1
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 :1Vocabulary :9
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 :1Vocabulary :2
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 :1Vocabulary :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 :1Vocabulary :4
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 :1Vocabulary :1

4.ESS2.B. Plate Tectonics and Large-Scale Systems

4.ESS2.B.1. Analyze and interpret data from maps to describe patterns of Earth’s features. [Clarification Statement: Maps can include topographic maps of Earth’s land and ocean floor, as well as maps of the locations of mountains, continental boundaries, volcanoes, and earthquakes.]
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 :1Vocabulary :4

MO.4.ESS3. Earth and Human Activity

4.ESS3.A. Natural Resources

4.ESS3.A.1. Generate and compare multiple solutions to reduce the impacts of natural Earth processes on humans. [Clarification Statement: Examples of solutions could include designing an earthquake resistant building and improving monitoring of volcanic activity.]
Weather
What is the weather like outside? Weather is the condition of the air outside. Weather involves many things, such as clouds, temperature, water in the air, and the wind. Read more...iWorksheets :3Study Guides :1Vocabulary :2
Standards

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