37
Lesson 37 of 84 · Gravity
ExperimentSimple Machines: The Lever (Part 2)
What You'll Learn
Simple machines make work easier by changing the direction or amount of force needed. The six simple machines are lever, pulley, inclined plane, wedge, screw, and wheel and axle.
Key Words
- momentum
- kinetic energy
Materials Needed
- pencils
- toy cars
- ramps
- string
- weights
Safety First
- Wash hands after handling materials.
- Be careful with scissors — ask an adult for help if needed.
- Do not look directly at the sun or bright lights.
Steps
Step 1 — Read
Read about Gravity and write down three key facts.
Step 2 — Do
Build a simple motor using a battery, magnet, wire, and paper clip supports. Observe how electromagnetic forces create rotation.
Step 3 — Observe
Compare the before and after states.
Step 4 — Record
Write your conclusion: did the results match your hypothesis? What would you change next time?
Check Your Understanding
Question 1
1 of 3Which is NOT a simple machine?