Healthy Heart and Lungs Word Search
- Free
- No account
- Answer key
- Standard
- About 18 min
- 10 words
Explore how the heart, lungs, blood, and oxygen work together with a printable puzzle and complete answer key for home or class.
For parents and caregivers
What your child will practice
- Describe how the heart and lungs work together to move oxygen through the body.
- Distinguish arteries from veins using their basic role in blood circulation.
How to use this puzzle at home
- Review the definitions and ask your child to predict which words describe organs, vessels, or actions.
- Complete the puzzle independently, then compare every circled word with the answer key.
- Find a resting pulse together and count beats for fifteen seconds without making a medical judgment.
Word List
- HEART
- LUNGS
- BLOOD
- OXYGEN
- PULSE
- BREATHE
- ARTERY
- VEIN
- CHEST
- CIRCULATE
Printable Puzzle
Vocabulary guide
Use these short definitions before or after the word search. Ask your child to explain a few in their own words.
- Heart
- A strong muscle that pumps blood throughout the body.
- Lungs
- Organs that bring oxygen into the body and remove carbon dioxide.
- Blood
- A liquid tissue that carries oxygen, nutrients, and wastes.
- Oxygen
- A gas from the air that body cells need to release energy.
- Pulse
- The regular beat felt as the heart pushes blood through arteries.
- Breathe
- To move air into and out of the lungs through the nose or mouth.
- Artery
- A blood vessel that carries blood away from the heart.
- Vein
- A blood vessel that carries blood back toward the heart.
- Chest
- The upper body area that protects the heart and lungs.
- Circulate
- To move continuously around a system and return again.
Talk about the science
- Why does every part of the body need a steady supply of oxygen?
- What happens to breathing and pulse after safe physical activity?
- How are an artery and a vein alike, and how are they different?
Try one more thing
Extension activity
Create a simple flow diagram using arrows and the labels lungs, heart, and body. Add oxygen beside the path leaving the lungs and explain the route aloud to a family member.
Teacher and tutor note
Classroom adaptation
After students solve the puzzle, arrange them in a circle to model circulation. Pass a red card from lungs to heart to body and a blue card back to show a simplified oxygen route.
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