49
Lesson 49 of 84 · Forces
ExperimentSpeed and Direction (Part 2)
What You'll Learn
A lever is a simple machine. A seesaw is a lever—push down on one end and the other goes up!
Key Words
- pulley
- wheel
- energy
Materials Needed
- blocks
- spring scale
- stopwatch
- pencils
Safety First
- Do not mix unknown chemicals together.
- Tie back long hair before starting the experiment.
- Protect your work surface with newspaper or plastic.
Steps
Step 1 — Read
Look at the picture and read the labels.
Step 2 — Do
Drop a feather and a coin at the same time from the same height. Which hits the ground first?
Step 3 — Observe
Draw a picture of what you observe.
Step 4 — Record
Share your results with a partner.
Check Your Understanding
Question 1
1 of 3How can you make something move?