Simple Fair Test Experiments for Grade 2 Science Class

🧪 Quick Study Guide

• 🍎 A fair test, also known as a controlled experiment, is a way to investigate something scientifically.
• 📏 In a fair test, you only change one thing (the independent variable) to see how it affects something else (the dependent variable).
• 🌱 Everything else in the experiment must stay the same (controlled variables) to ensure a fair comparison.
• 📝 To make it even more accurate, repeat the experiment several times!
• 💡 If you change more than one thing, you won't know which change caused the result.

🧪 Practice Quiz

1. Which of these is the MOST important part of a fair test?
   1. Changing many things at once.
   2. Changing only one thing at a time.
   3. Not changing anything at all.
2. You want to see if different amounts of water affect how tall a plant grows. What should you change?
   1. The type of soil.
   2. The amount of water.
   3. The type of plant.
3. What should you keep the SAME when testing if sunlight affects plant growth?
   1. The amount of sunlight.
   2. The type of plant.
   3. The height of the plant.
4. You're testing which paper airplane design flies farthest. What is the ONE thing you should change?
   1. The color of the paper.
   2. The size of the paper clip attached.
   3. The design of the airplane.
5. Why is it important to only change ONE thing in a fair test?
   1. To make the experiment shorter.
   2. To know what caused the result.
   3. To confuse your friends.
6. If you want to find out which type of ball bounces the highest, what should you keep the same?
   1. The height you drop the ball from.
   2. The type of surface you bounce it on.
   3. Both A and B.
7. What does repeating an experiment help you do?
   1. Get more accurate results.
   2. Make the experiment more fun.
   3. Use more materials.