46
Lesson 46 of 84 · Forces
ExperimentWhat Makes a Ball Roll? (Part 2)
What You'll Learn
When you throw a ball up, gravity pulls it back down. The harder you throw, the higher it goes!
Key Words
- lever
- ramp
Materials Needed
- blocks
- spring scale
- stopwatch
- pencils
- toy cars
Safety First
- Protect your work surface with newspaper or plastic.
- Adult supervision recommended.
- Do not taste any materials.
Steps
Step 1 — Read
Read and learn: When you throw a ball up, gravity pulls it back down. The harder you throw, the higher it goes!
Step 2 — Do
Try the experiment. What do you think will happen?
Step 3 — Observe
Watch carefully. What happens?
Step 4 — Record
Draw and write about what you learned.
Check Your Understanding
Question 1
1 of 3What is gravity?