Grade 2 Science Quiz on Air, Breathing, and Cleanliness.

📚 Quick Study Guide

• 💨 Air is all around us: We can't see it, but it's essential for life!
• 👃 Breathing: Our lungs help us breathe in oxygen from the air and breathe out carbon dioxide.
• 🧼 Cleanliness: Keeping our bodies and surroundings clean helps us stay healthy and avoid germs.
• 🫁 Lungs: These are a pair of organs located in the chest that facilitate gas exchange, allowing us to take in oxygen and expel carbon dioxide.
• 🦠 Germs: These are tiny organisms that can cause illness. Washing our hands regularly helps prevent the spread of germs.

🧪 Practice Quiz

1. What do we breathe in from the air?
   1. Carbon Dioxide
   2. Oxygen
   3. Nitrogen
2. Which part of our body helps us breathe?
   1. Heart
   2. Brain
   3. Lungs
3. What do we breathe out?
   1. Oxygen
   2. Carbon Dioxide
   3. Water Vapor
4. Why is it important to wash our hands?
   1. To make them smell good
   2. To remove germs
   3. To make them look pretty
5. Which of these is NOT a way to keep our surroundings clean?
   1. Littering
   2. Sweeping
   3. Mopping
6. What does cleanliness help us prevent?
   1. Happiness
   2. Germs and Illness
   3. Good Weather
7. What is one way to keep the air clean?
   1. Burning trash
   2. Planting trees
   3. Driving more cars