How Batteries Work (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

motion
balanced
gravity

Materials Needed

ramps
string
weights
tape

Safety First

Do not look directly at the sun or bright lights.
Clean up spills immediately to prevent slipping.
Use materials only as directed in the experiment.

Steps

Step 1 — Read

Review the background information on Forces and Motion before starting.

Step 2 — Do

Set up a pendulum with string and a washer. Change the string length and count swings per minute for each. Graph your results.

Step 3 — Observe

Observe what happens and describe it in detail.

Step 4 — Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

What causes an object to accelerate?