Nature & science · Age 9 · Advanced Body Systems (circulation & Respiration)
Gas Exchange in the Lungs – Oxygen In, Carbon Dioxide Out
Explore the process of gas exchange that happens inside the lungs.
Module
Advanced Body Systems (circulation & Respiration)
Age
Age 9
Duration
10 min
Questions
5
What's in this exercise
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Question 1
Multiple choice
Where in the lungs does gas exchange take place?
Question 2
Multiple choice
What percentage of the air we breathe is roughly oxygen?
Question 3
Multiple choice
Why do the alveoli have very thin walls and a rich blood supply?
Question 4
True or false
When we breathe out, the air we exhale contains more carbon dioxide than the air we breathed in.
Question 5
Matching
Match each gas to what happens to it during breathing.
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Graph Patterns – Understanding What Heart Rate Data Tells Us
Active Bodies – Why Moving More Means a Healthier Heart
Activity and Your Body – How Exercise Changes Breathing and Heart Rate
Inside the Circulatory System – Blood and Its Pathways
Breathing In – How Lungs Bring Oxygen into the Body
What Blood Carries – Oxygen and Nutrients on the Move