Simple Machines: The Lever (Part 3)

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
potential energy

Materials Needed

paper clips
rubber bands
blocks
spring scale

Safety First

Adult supervision recommended.
Do not taste any materials.
Wear safety goggles when mixing liquids.

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 3

Which is NOT a simple machine?