Grade 3 Subjects > Science Worksheets

Air and Wind
We cannot see it, but we can feel it. Air is made up of tiny things called molecules...
Animal Adaptations
These adaptations can be things like how they look or how they act. For example, some animals have thick fur to keep warm in icy places...
Animal Habitats
A habitat is a place where an animal can find food, water, and shelter. There are many types of habitats, like forests, deserts, and oceans...
Balanced and Unbalanced Forces
They are what make things move or stay still. When forces are balanced, it means they are equal and opposite...
Basic needs of living things
Animals eat plants or other animals to get their food. Plants make their own food using _sunlight_...
Classifying animals
To understand them better, we can put them into groups. This is called classifying...
Communities of organisms
This place is called a community. A community can be in a forest, a pond, or even your backyard! Every living thing in a community...
Conservation of water
We need to save or conserve water because there is not an endless supply. People use water every day for many things like drinking, cooking, and cle...
Day and Night
The Earth spins like a top. When your part of the Earth faces the sun, it is day...
Digestive system
It all starts in the mouth. When we eat, our teeth and saliva help break down the food into smaller pieces...
Earth's Layers
It has four main layers. The outer layer is called the crust...
Earth's Resources
These things are called resources. Some of these resources are things like water, air, and soil...
Earthquakes and Volcanoes
It is always moving and changing. Sometimes, the ground shakes...
Electricity basics
It can light up a room, make a fan spin, and even help our computers and TVs turn on. We use electricity every day...
Fire safety and prevention
It is important to know how to stay safe. A fire needs three things to start: heat, fuel, and oxygen...
Floating and Sinking
Buoyancy is the ability of an object to float in water or air. When you put an object in water, it pushes the water out of the way...
Food Chains and Webs
Plants are special because they make their own food using sunlight. This is the start of a food chain...
Forces and Motion
When something moves, it is in motion. But what makes things move? They move because of forces...
Forms of Energy
There are many different kinds of energy. Heat energy comes from things that are hot, like the sun or a fire...
Fossils and Dinosaurs
These creatures lived millions of years ago. We know about them because of fossils...
Habitats and Ecosystems
A habitat has everything a living thing needs to survive, like food, water, and shelter. There are many different kinds of habitats...
Health and Nutrition
Healthy foods help us to grow strong and give us energy to play and learn. We need to eat a variety of foods every day to stay healthy...
Healthy eating and nutrition
We should eat different kinds of foods every day. Some foods give us energy, like fruits and vegetables...
Healthy ecosystems
They all help each other in different ways. Trees and plants give us fresh air and food...
Heat and Temperature
Heat is what makes things warm. When you stand in the sun, you feel the heat...
How fossils are formed
When they died, their bodies sometimes got covered by mud or sand. Over a long time, this mud or sand turned into rock...
How Plants Grow
They start as tiny seeds. The seed needs soil, water, and sunlight to grow...
Human body basics
It has many parts that work together. One important part is the brain...
Human Body Systems
These parts are called body systems. Each system has a special job to do...
Importance of bees
They help plants grow by moving pollen from one flower to another. This is called pollination...
Insects and Their Life Cycles
They are found all over the world. Some common insects are ants, bees, and butterflies...
Introduction to biodiversity
This is called biodiversity. Biodiversity is the variety of all living things on Earth, like plants, animals, and even tiny microorganisms...
Introduction to cells
Just like how a house is made of bricks, our body is made of cells. Cells are so small that we need a special tool called a microscope ...
Introduction to ecosystems
They all need each other to survive. In an ecosystem, you can find many different plants and animals...
Introduction to Electricity
It makes our lights shine and our computers work. Electricity is very important in our lives...
Introduction to the scientific method
It helps them find answers to questions. First, scientists ask a question...
Landforms and Bodies of Water
A landform is a natural shape on the Earth's surface. Some common landforms are mountains, hills, and valleys...
Life Cycles of Animals
A life cycle shows how they grow and change. Most animals start as babies...
Life cycles of plants and animals
A life cycle is the stages a living thing goes through from birth to adulthood. Both plants and animals have life cycles...
Life in Different Habitats
These places are called habitats. Each habitat is special...
Light and Shadows
The sun is the biggest source of light for Earth. Without light, everything would be dark...
Living and Nonliving Things
Some are living and some are nonliving. Living things need food, water, and air...
Magnets and Magnetism
This is called magnetism. Some metals, like iron, are attracted to magnets...
Matter and Its States
Matter is anything that takes up space and has weight. Matter is found in three states: solid, liquid, and gas...
Muscular system
Muscles help us move, play, and do all the things we love. We have over 600 muscles in our body! There are three...
Natural resources
Some important natural resources are water, trees, and soil. Water is _essential_ for all living things...
Parts of a Plant
They have different parts that help them grow and live. Let's learn about some of these parts! The roots are the part of the plant that grows under ...
Patterns in Nature
A pattern is something that repeats. When you look at a flower, you might see a pattern in its petals...
Planets in our solar system
It is like a circle with the Sun in the middle. The planets move around the Sun...
Plant Life Cycles
Just like people, they have a life cycle. A plant starts as a tiny seed...
Plant reproduction
They make new plants through a process called reproduction. This is how plants keep growing around us...
Plants and their needs
They need sunlight, water, and soil. Plants use sunlight to make their food in a process called photosynthesis...
Pollution and Environment
It is important to keep our environment clean so that all living things can stay healthy. There are different types of pollution...
Predicting Weather
People called meteorologists use special tools to help them. They use a _thermometer_ to see how hot or cold it is...
Properties of air
Air is made up of tiny things called particles. These particles are so small that we cannot see them with our eyes...
Properties of Materials
Each material has special properties that make it useful. For example, some materials like wood are strong and can hold things up...
Properties of Sound
It is made when things vibrate. When a bell rings, it shakes back and forth very quickly...
Recycling and Conservation
It helps save our planet. You can recycle many things like paper, plastic, and glass...
Renewable and nonrenewable resources
Renewable resources are things we can use over and over again. For example, the sun is a renewable resource...
Rocks and Minerals
They can be found everywhere, from your backyard to the tallest mountains! There are different types of rocks. Some rocks are shiny and colorful, w...
Seasonal Changes
There are four main seasons: spring, summer, autumn, and winter. Each season has its own weather and changes in nature...
Seasons and how they change
Each season is different and brings special changes to the weather and nature. In spring, flowers start to bloom and the weather gets warmer...
Simple Machines
There are six types of simple machines. One type is the lever...
Skeletal system
These bones give our body its shape and help us move. Without bones, we would be like jelly! The bones also protect important parts of our bod...
Soil types
It helps plants grow. There are different types of soil...
Sound and Vibration
When you pluck a guitar string, it moves back and forth very fast. This movement is called a vibration...
States of matter
Matter can be in three different states: solid, liquid, and gas. Each state has its own special features...
Sun, moon, and stars
The sun is a big ball of hot gases. It gives us light and warmth...
The Human Ear
It lets you listen to music, talk to friends, and hear birds sing. The ear has three main parts: the outer ear, the middle ear, and the inner ear...
The Human Eye
It helps us to see the world around us. Our eyes are like small, round cameras...
The Moon and Its Phases
This trip around the Earth is called an orbit. The moon looks different each night because of its phases...
The Scientific Method
This way is called the scientific method. It has several steps to help find answers to questions...
The Solar System
At the center of our Solar System is the Sun. The Sun is a giant ball of hot gas...
The Sun and Stars
It is very important because it gives us light and heat. Without the Sun, it would be too cold and dark for us to live on Earth...
The Water Cycle
It starts with the sun. The sun warms up water in lakes, rivers, and oceans...
Tides and ocean currents
This movement is caused by tides and ocean currents. Tides make the ocean go up and down...
Types of pollution
There are many types of pollution. Air pollution happens when dirty gases and smoke mix with the air we breathe...
Using Natural Resources
These are called natural resources. Some natural resources are things like water, trees, and sunlight...
Using scientific tools
One important tool is the magnifying glass. It helps scientists see things that are very small by making them look bigger...
Water and Its Properties
It is a special kind of liquid that has some amazing properties. One important property of water is that it can be found in three forms: liquid, sol...
Water cycle
The water cycle is how water moves all around the Earth. First, the sun heats up water in rivers, lakes, and oceans...
Weather and Climate
It can be sunny, rainy, or windy. Weather changes all the time...
Weathering and erosion
Weathering happens when rocks break down into smaller parts. Sometimes, water, wind, or ice can move these small pieces a...
What is a scientist?
Scientists want to know how things work. They are very curious! Some scientists study living things, like animals and plants...