Science Worksheets and Study Guides Fourth Grade

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
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
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: 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
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
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: 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
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: 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: 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: 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
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
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
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
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: 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: 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: 1Vocabulary: 4
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: 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: 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
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: 4