Lesson 82 of 84 · Forces

Experiment⭐ 30 XP⚡ Spark Lab

Making a Catapult (Part 3)

🧪Lab Brief #82

Making a Catapult (Part 3).

🎯 Your mission

Predict it first. Then prove yourself right (or wrong).

⚡ The twist

The opposite of what you expect is often what happens.

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Mind = Blown

🔥 A bolt of lightning is 5 times hotter than the surface of the sun.

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Make a hypothesis first

Predict: what happens if you double the force?

What You'll Learn

Gravity is the same force that keeps the moon going around the Earth!

Key Words

energy
push

Materials Needed

rubber bands
blocks
spring scale
stopwatch
pencils
toy cars

Safety First

Keep small objects away from young children.
Work in a well-ventilated area when using vinegar or other strong-smelling substances.

Steps

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.

Check Your Understanding

Question 1

1 of 3

What are the two poles of a magnet?

How sure are you going to be?😐 maybe

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Where you see this in real life

This is why airplanes can fly and why rockets reach space.

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Stretch Challenge

Try this in real life this week.

This week, find one thing in your house that turns one kind of energy into another.

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For the dinner table

“Show me something at home that uses this kind of energy.”

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Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

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Send it to a parent who's looking for a 10-minute kitchen science win.

🖨️

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