Friction Slows Things Down (Part 3)

What You'll Learn

Friction is the force that slows things down. Rough surfaces have more friction than smooth ones.

Step 1 — Read

Look at the new words. Can you say each one?

Step 2 — Do

Make a ramp from a book. Roll a marble down from different heights. Measure how far it rolls.

Step 3 — Observe

Use your senses to describe what you notice.

Step 4 — Record

Write 1-2 sentences about what happened.

1 of 3

What are the two poles of a magnet?