Simple Machines: Pulleys

What You'll Learn

Electricity flows through circuits. A simple circuit needs a power source, a conductor (wire), and a load (like a light bulb). Breaking the circuit stops the flow of electricity.

Key Words

momentum
acceleration
velocity

Materials Needed

paper clips
rubber bands
blocks
spring scale
stopwatch
pencils

Safety First

Wear safety goggles when mixing liquids.
Wash hands after handling materials.
Be careful with scissors — ask an adult for help if needed.

Steps

Step 1 — Read

Read and learn: Electricity flows through circuits. A simple circuit needs a power source, a conductor (wire), and a load (like a light bulb). Breaking the circuit stops the flow of electricity.

Step 2 — Do

Repeat the experiment two more times for accuracy.

Step 3 — Observe

Note any unexpected results.

Step 4 — Record

Share your findings with the class or a partner.

Check Your Understanding

Question 1

1 of 3

What is inertia?