Gravity Pulls the Ball

Lab Brief #3

🎯 Your mission

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

⚡ The twist

Every solution creates a new problem. That's good — that's the next project.

What you'll learn

A ball rolls down a ramp because gravity pulls it. Gravity pulls everything down!

Key words · 1 of 2

pull
To move something closer by tugging on it.
roll
To move by turning over and over along a surface.

Key words · 2 of 2

ramp
A flat surface that slants to help move things up or down.

Make a hypothesis first

Predict: which design will hold the most weight?

Say your guess out loud — then find out if you were right.

Get ready

🧰 What you need

ramps

⚠️ Safety first

Have an adult check your set-up before you start, and tidy everything away afterwards.

Step 1 of 4 · Read

Say the vocabulary words out loud. Can you repeat them?

Step 2 of 4 · Do

Roll a ball down a ramp. Try making the ramp steeper. What happens?

Step 3 of 4 · Observe

Look closely! What do you see?

Step 4 of 4 · Record

Draw a picture of what you learned today.

Question 1 of 3

What makes a ball roll?

Question 2 of 3

What happens when you drop a ball?

Question 3 of 3

If you pull a wagon, does it come toward you?

Mind = blown

🌉 The Eiffel Tower can grow 6 inches taller in summer because metal expands when hot.

Nice work!

You got 0 of 3 right.

Next: Ramps Help!All lessons

🎯

Next Smart Experiment

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

✨ More to explore

🌍 Where you see this in real life: Every bridge, building, and gadget you've ever used started with this.

🏆 Stretch challenge (try it this week): Find something that's broken at home and try to figure out *why* it broke.

👨‍👩‍👧 For the dinner table: “What's something around the house you'd redesign — and how?”

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