3
Lesson 3 of 84 · Simple Machines
ExperimentLet's Build a Ramp!
What You'll Learn
A ball rolls down a ramp because gravity pulls it. Gravity pulls everything down!
Key Words
- pull
- fast
Materials Needed
- tape
- ruler
- cardboard
- marbles
- paper clips
Safety First
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Can you name the things in the picture?
Step 2 — Do
Roll a ball down a ramp. Try making the ramp steeper. What happens?
Step 3 — Observe
Use your eyes, ears, and hands to explore. What do you notice?
Step 4 — Record
Color a picture to show what happened.
Check Your Understanding
Question 1
1 of 3Which goes faster down a ramp: a ball or a block?