Electromagnets (Part 2)

What You'll Learn

A force is a push or pull that can change an object's motion, shape, or direction. Forces are measured in Newtons and can act through contact or at a distance.

Key Words

lever
pulley

Materials Needed

paper clips
rubber bands
blocks
spring scale
stopwatch
pencils

Safety First

Dispose of materials properly after the experiment.
Handle glass items carefully to avoid breakage.

Steps

Step 1 — Read

Review the background information on Forces before starting.

Step 2 — Do

Build an electromagnet by wrapping insulated wire around a nail and connecting it to a battery. Test how many paper clips it can pick up. Try adding more wire coils.

Step 3 — Observe

Draw a detailed diagram of what you observe.

Step 4 — Record

Write a conclusion: what did your results show? Did they match your prediction?

Check Your Understanding

Question 1

1 of 3

What is a fulcrum?