24
Lesson 24 of 84 · Forces
ExperimentGravity Drops Things Down
What You'll Learn
Things slow down and stop because the ground rubs against them. That is friction!
Key Words
- bounce
- spin
Materials Needed
- blocks
- spring scale
- stopwatch
- pencils
- toy cars
Safety First
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Read and learn: Things slow down and stop because the ground rubs against them. That is friction!
Step 2 — Do
Follow along with the activity. Take your time!
Step 3 — Observe
Did anything change? Point to what is different.
Step 4 — Record
Point to the things you used in the activity.
Check Your Understanding
Question 1
1 of 3Can you push a toy car?