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Lesson 37 of 84 · Simple Electricity
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
- speed
- direction
Materials Needed
- cardboard
- marbles
- paper clips
- rubber bands
- blocks
- spring scale
Safety First
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
- Dispose of materials properly after the experiment.
Steps
Step 1 — Read
Read about Simple Electricity 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?