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Breathing Made Simple Worksheet
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Breathing Made Simple Worksheet
Explore how air moves through your body. Read each question carefully, then use the information provided and your science knowledge to answer.
Follow the air
Air travels through a pathway before oxygen can enter your blood.
1.Number these parts from 1 to 4 to show the route air takes into your body: lungs; nose or mouth; trachea; bronchi.
2.Match each breathing-system part with its main job.
- Nose
- Trachea
- Lungs
- Diaphragm
- Muscle that helps the lungs expand and contract
- Filters, warms and moistens incoming air
- Carries air towards the lungs
- Where oxygen passes into the blood
3.Imagine taking a slow breath in. Which change happens?
- The diaphragm moves down and the lungs expand.
- The diaphragm moves up and the lungs shrink.
- The heart stops while the lungs fill.
- Air leaves the body through the lungs.
4.Which gas from the air does your body need for its cells to release energy?
5.When you breathe out, your body releases more gas than it breathed in.
Think like a scientist
Use evidence from your own body and what you know about healthy lungs.
6.The bronchi are two branches that carry air from the trachea into the lungs.
TrueFalse
7.Select all the actions that help protect or support your lungs.
- Doing regular physical activity
- Avoiding cigarette smoke
- Breathing in dusty air whenever possible
- Choosing clean, fresh air when you can
- Starting to smoke
8.After a brisk walk, you may breathe faster. Explain why your body does this.
9.Name two parts of the breathing system that air passes through or into on its way to the lungs.
2 printable pages
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