Electric Circuits (Part 2)

What You'll Learn

Energy can be transformed from one form to another but cannot be created or destroyed. A light bulb converts electrical energy into light and heat energy.

Key Words

power
electromagnetic
circuit

Materials Needed

rubber bands
blocks
spring scale
stopwatch
pencils
toy cars

Safety First

Tie back long hair before starting the experiment.
Protect your work surface with newspaper or plastic.
Adult supervision recommended.

Steps

Step 1 — Read

Read and learn: Energy can be transformed from one form to another but cannot be created or destroyed. A light bulb converts electrical energy into light and heat energy.

Step 2 — Do

Create a labeled diagram of what you built or observed.

Step 3 — Observe

Compare the before and after states.

Step 4 — Record

Write your conclusion: did the results match your hypothesis?

Check Your Understanding

Question 1

1 of 3

What is needed for a simple electric circuit?