This science page has been created to go with the Peter and Polly Series by Rose Lucia: The Broken Show Case. However, it can be used with other science curriculum.
🎠 Have you ever ridden a merry‑go‑round like Peter and Polly?
Merry‑go‑rounds spin fast.
When you ride one, you have to hold on tight so you don’t slide off.
Your hands are doing something important — they are using a force.
💪 What Is a Force?
A force is a push or a pull.
A force can change how something moves.
- If something is not moving, you need a force to start it moving.
- If something is moving, you need a force to stop it.
- Forces help things speed up, slow down, or change direction.
🌀 Centripetal Force: The “Stay‑On” Force
When you hold on to a merry‑go‑round, your hands are making a special kind of force called centripetal force.
Centripetal force is the force that keeps something moving in a circle.
- Your hands pull toward the middle of the merry‑go‑round.
- That pull keeps you from sliding straight off.
Without centripetal force, your body would want to go straight ahead, not around in a circle.
🧒 Try It Like Peter and Polly
Try the enrichment activity where you spin in a circle:
- Your partner’s hands pulling you toward the middle
are making centripetal force. - That force keeps you moving in a safe circle instead of flying away.
✨ Quick Kid Facts
- A force is a push or a pull.
- Forces can start, stop, or change movement.
- Centripetal force keeps things moving in a circle.
- You use centripetal force when you hold on to a merry‑go‑round.
