Science Worksheets and Study Guides Second Grade

Earth & Sky

Earth yesterday and today

Life on Earth Has Changed. Many kinds of animals that used to live on Earth are no longer living. They are extinct. Reasons for Extinction: Big changes in the climate. Many times animals could not handle these big changes in the weather. Good news: Many animals have adapted to many changes that happen on Earth so that they CAN survive and NOT become extinct! Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1

Earth's weather and seasons

What is Weather? Weather is what it feels like outside right now: hot, cold, windy, wet... There are Four Seasons: Winter, Spring, Summer, Fall. Seasons always come in the same order every year. Each season brings different weather. Winter is the coldest season and summer is the warmest. Some Kinds of Bad Weather: A thunderstorm, A blizzard, A hurricane. Read more...iWorksheets: 4Study Guides: 1Vocabulary: 2

Fossils and dinosaurs

Many animals have lived on Earth and many still live on the Earth. Some lived on Earth millions of year ago. Many of these animals unfortunately do not live on Earth anymore. Fossils are things that provide evidence (or proof) of things that lived long ago. A fossil is the outline or piece of something that died millions of years ago. Read more...iWorksheets: 5Study Guides: 1Vocabulary: 1

Moon, star and planets

The moon moves around the Earth. A star is a hot ball of gas, stars give off light. The Sun is a star. Read more...iWorksheets: 4Study Guides: 1Vocabulary: 2

Rocks, Soil and water

What are Rocks? Rocks are solid objects found in nature. Rocks are made up of minerals. What is Soil? Soil is the loose material the covers much of the Earth. Soil is also nonliving. Soil can be made of clay, sand, and humus. All living things need WATER to survive and to grow. The movement and recycling of the Earth’s water is called the water cycle. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 2

The sun and earth

The Sun is a large hot ball of gas. It is also a star. The Sun gives Earth light and heat. Living things need the Sun to live! Sun rays shine on the moon at night which makes the moon bright! The Earth is the third planet from the Sun. There are four seasons: winter, spring, summer, and fall. Read more...iWorksheets: 5Study Guides: 1Vocabulary: 1

Using and saving natural resources

Natural resources are found on the Earth and are important to living things. People, plants, and animals need air to live. Air is a natural resource that never runs out! Water is another natural resource that people and animals use – they drink water in order to survive. Plants also need water to grow. Some natural resources are renewable. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 2

Physical Science

All about sound and light

How is Sound Made? Sound is made because of something vibrating. You hear sounds when vibrating air causes your eardrum to vibrate. How Are Sounds Different? How Does Sound Travel? How Do People and Animals Make Sounds? What is Light? Light is also a form of energy. Light is energy that travels at very high speeds. Where Does Light Come From? Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1

Comparing matter

What is matter? Matter is all around you. Matter is anything that takes up space. Mass is the amount of matter in an object. It is how much stuff an object is made of. Read more...iWorksheets: 4Study Guides: 1Vocabulary: 1


What Is a Magnet? A magnet attracts certain kinds of metal. Attract means to pull towards. If something is magnetic, that means it is attracted by a magnet. Magnets come in different shapes and sizes. Magnets are used most every day. Example: You may have magnets on your refrigerator to hang up pictures and notes. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1

Objects in motion

What is force? A force is a push or pull that can make something move. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 2

Plants & Animals


FreeThere are many different kinds of animals. The five main groups of animals are: Fish, birds, mammals, reptiles and amphibians. Read more...iWorksheets: 5Study Guides: 1Vocabulary: 1

Energy needs

What is Energy? Energy is the ability to do work. Energy is what allows living things and objects to do things. Different Kinds of Energy are: Heat Energy, Energy of Motion, Light Energy, Sound Energy, Electricity or Electrical Energy. Some Sources of Energy are: The Sun, A candle, A stove, Food. Read more...iWorksheets: 3Study Guides: 1

How do plants and animals live together?

Plants need air, water, sunlight, and room to grow in order to live. Animals need air, water, food, and shelter in order to live. What is a Shelter? It’s a safe place for an animal! Read more...iWorksheets: 3Study Guides: 1

How living things grow and change?

What are living things? Living things are alive! Plants, animals, and people are living things. Living things can grow. Read more...iWorksheets: 5Study Guides: 1Vocabulary: 1

Land Habitats

What is a habitat? A habitat is the place where plants and animals live. Read more...iWorksheets: 5Study Guides: 1Vocabulary: 2

Mammals and birds

What are Birds? Birds are warm-blooded animals that have: wings, feathers, a beak, no teeth, bones. Birds lay eggs. Their young hatch from those eggs. What Are Mammals? Mammals are animals that have hair. Mammals are the only animals with hair. Mammals are also warm-blooded. This means their body temperature stays the same, even if it is very cold or hot outside. Read more...iWorksheets: 5Study Guides: 1Vocabulary: 1


What are the Parts of a Plant? Let’s go from the bottom to the top: ROOTS, STEM, LEAVES, FLOWERS. Who Needs Plants? EVERYONE! Plants give off a gas called oxygen which is what we (and animals) need to breathe in to live. A plant's life cycle is how long a plant lives or how long it takes to grow, flower, and make seeds. All plants need water, air, and warm temperatures to grow. Read more...iWorksheets: 6Study Guides: 1Vocabulary: 2

Reptiles, amphibians and fish

Reptiles have scales. Reptiles are born on land. Reptiles are cold-blooded which means their bodies change temperatures with the outside temperature around them. Reptiles lay eggs, and their babies hatch from those eggs. All amphibians begin their life in water with gills. As they grow, they develop lungs – which is what they use to breathe with on land. They grow legs to use on land too. Fish use gills to breathe. A fish stays in the water for its entire life! Read more...iWorksheets: 5Study Guides: 1Vocabulary: 1

Water Habitats

We already know that a habitat is the place where plants and animals live. Now, let’s look at WATER habitats... Water covers nearly 75% of the Earth: which means there is a lot more water than land on Earth! Read more...iWorksheets: 5Study Guides: 1Vocabulary: 2


Did you know... 2nd Grade

Gas is all around us. There is a layer of gas that surrounds Earth, which is called the atmosphere. Scientists who study the weather are called meteorologists. Some plants like ferns do not have flowers. They make new plants using spores instead of seeds. The cheetah is the fastest animal in the world. Cheetahs can run up to about 113 kilometers per hour. The arctic is the coldest habitat. Brrrr! Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1

Hands-on lab skills/Science Inquiry

Predictions Based on Patterns. Scientists often make predictions based on all the things they already know are true. Predict means to tell what you think is going to happen. Scientists then test their predictions to see if they are right! Scientists often compare and sort objects based on color, shape, texture, size and weight. Scientists use a METER STICK to measure the length of an object. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1

Math in Science

Charts and Graphs. Studying Plants. Studying Animals. Studying Water Habitats, Studying How Living Things Grow and Change. Studying Energy Needs. Studying Earth's Weather. Studying the Sun and the Earth. Studying the Moon, Stars, and Planets. Studying Earth, Yesterday and Today. Using and Saving Natural Resources. Hands-on Lab Skills. Read more...iWorksheets: 3Study Guides: 1

Science in our world

What is Technology? Technology is using science in order to solve different problems. Technology uses things we know about science to make tools for people to make doing work easier. Technology can be as simple as a hammer. Technology keeps us safe (in our houses, our cars). Technology supplies us with the things we need to live. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1

What is science?

Science is the study of the world around us. Scientists study the world around us. When studying things like plants, animals, and rocks, scientists use their senses: Eyes - to see. Nose - to smell. Ears - to hear. Hands - to touch. Mouth - to taste. Scientists study many things – like the things YOU study in 2nd grade: plants, rocks, weather, fossils, solar system, animals. Read more...iWorksheets: 3Study Guides: 1Vocabulary: 1

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