Breath Explorers: Fun Respiratory Quiz for Curious Kids

Discover how we breathe! Simple, playful questions about lungs, air, and nose—perfect for kids 6+. Ready to become a breath explorer?

  1. What organ do we use to breathe in air?
    1. Heart
    2. Lungs
    3. Stomach
    4. Liver
  2. What tiny air sacs let oxygen enter the blood?
    1. Alveoli
    2. Bronchi
    3. Cilia
    4. Villi
  3. What tube carries air from the throat to the lungs?
    1. Trachea
    2. Esophagus
    3. Aorta
    4. Urethra
  4. What muscle helps your lungs puff out and pull in?
    1. Biceps
    2. Diaphragm
    3. Liver
    4. Kidney
  5. Which gas do our lungs take from the air?
    1. Helium
    2. Carbon dioxide
    3. Nitrogen
    4. Oxygen
  6. Which gas do we breathe out as waste?
    1. Nitrogen
    2. Oxygen
    3. Hydrogen
    4. Carbon dioxide
  7. What tiny hairs help clean the air in your windpipe?
    1. Cilia
    2. Villi
    3. Alveoli
    4. Nephrons

Answers and explanations

  1. Question: What organ do we use to breathe in air?
    Answer: Lungs
    Explanation: Lungs pull in air so oxygen can go into your blood. Fun fact: your right lung is a little bigger than your left!
  2. Question: What tiny air sacs let oxygen enter the blood?
    Answer: Alveoli
    Explanation: Alveoli are tiny balloons where oxygen and carbon dioxide swap places. Fun fact: there are millions of them in your lungs!
  3. Question: What tube carries air from the throat to the lungs?
    Answer: Trachea
    Explanation: The trachea is the airway pipe with rings of cartilage to keep it open. Fun fact: it is often called the windpipe!
  4. Question: What muscle helps your lungs puff out and pull in?
    Answer: Diaphragm
    Explanation: The diaphragm moves down to make space for air and moves up to push air out. Fun fact: you feel it when you laugh or hiccup!
  5. Question: Which gas do our lungs take from the air?
    Answer: Oxygen
    Explanation: Oxygen travels from the lungs into the blood to power our cells. Fun fact: plants give us oxygen via photosynthesis!
  6. Question: Which gas do we breathe out as waste?
    Answer: Carbon dioxide
    Explanation: Our body makes carbon dioxide and we breathe it out through the lungs. Fun fact: plants use this gas to grow!
  7. Question: What tiny hairs help clean the air in your windpipe?
    Answer: Cilia
    Explanation: Cilia sweep mucus and dust out of the airways to keep lungs clean. Fun fact: they move like tiny brushes!