Year 3 Skeletons and Nutrition Worksheet - Intermediate

Year 3 Skeletons and Nutrition worksheet for Year 3 (Key Stage 2 / Year 3-6 (Ages 7-11)). Intermediate level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•Key Stage 2 / Year 3-6 (Ages 7-11)•Human Bodyintermediate

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Strong Bones, Healthy Bodies

Year 3 Science · Ages 7–8 · Intermediate

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Instructions: Explore how food helps humans and other animals, and how skeletons and muscles support, protect and move the body. Read each prompt carefully and write your answers in the boxes. Use the clues in the questions to explain your thinking.

Food and its Jobs

Choose the best answer for each question. Think about what different foods do for a growing body. Circle one answer for each question.

1. Which food is a good source of energy?

2. Which food helps build and repair muscles?

3. Which food can help keep bones strong because it contains calcium?

4. Why does the body need a variety of foods?

Nutrition in Different Animals

Read each animal’s food and decide what it tells you about its diet. Write a short answer in each box. Use the words herbivore, carnivore or omnivore where they fit.

1. A rabbit eats grass and leaves. What kind of animal is it?

2. A fox eats rabbits and mice. What kind of animal is it?

3. A bear eats berries, fish and insects. What kind of animal is it?

4. A cow eats grass. Name one food group or nutrient that helps its body grow and repair itself.

What Does the Skeleton Do?

Use what you know about bones to complete each statement. Give a clear word or short phrase in each box.

1. The skeleton gives the body its shape and helps to ______ it.

2. The skull protects the ______.

3. The ribs protect the heart and ______.

4. Bones meet at places called ______, which help the body bend.

5. Write one other part of the body that bones protect.

Muscles Make Movement Possible

Answer each question using the information in the prompt and your science knowledge. Remember: muscles work with bones to move the body.

1. When you bend your arm, what do muscles help your bones do?

2. Muscles are attached to bones. What happens to a muscle when it contracts?

3. Why do muscles often work in pairs around a joint?

4. A child straightens a bent leg. What must the muscles and bones do together to make this movement?

Healthy Choices: Read the Clues

Read the short passage, then answer the questions using details from it. Explain your reason where asked.

Mina is growing and enjoys running at playtime. At lunch she eats a cheese sandwich, an apple and drinks water. Cheese contains calcium, which helps keep bones strong. Bread provides energy, and a varied diet helps the body grow and stay healthy. Mina’s skeleton supports her body, while her muscles pull on bones to help her run.

1. Which food in Mina’s lunch contains calcium?

2. What does the bread help provide?

3. What does Mina’s skeleton do for her body?

4. How do muscles help Mina run?

Explain Your Science

Use a complete sentence for each answer. Include the science words support, protect, movement, bones or muscles when they help explain your idea.

1. Explain how the skeleton supports the body.

2. Explain how the skull protects an important body part.

3. Explain how bones and muscles work together to make movement.

Answer Key

Activity 1: Bread ; Cheese ; Milk ; To grow and stay healthy

Activity 2: Herbivore ; Carnivore ; Omnivore ; Accept a suitable nutrient such as protein, which helps growth and repair

Activity 3: Support ; Brain ; Lungs ; Joints ; Accept a suitable example such as the brain, heart or lungs

Activity 4: Muscles pull on bones to move the arm ; It gets shorter/tighter ; One muscle pulls to bend a joint and the other pulls to straighten it ; Muscles contract and pull on the leg bones at the joint so the leg straightens

Activity 5: Cheese ; Energy ; It gives her body shape and holds it up ; They contract and pull on bones to move her legs

Activity 6: The skeleton supports the body by giving it shape and holding it up ; The skull protects the brain ; Muscles contract and pull on bones at joints, causing movement