Lesson 76 of 84 · Forces
Lesson⭐ 30 XP⚡ Spark LabWhat Makes a Ball Roll? (Part 3)
What Makes a Ball Roll? (Part 3).
🎯 Your mission
Learn the rule. Then catch nature using it.
⚡ The twist
The opposite of what you expect is often what happens.
Mind = Blown
🎢 You feel weightless on a roller coaster because you and the seat are falling at the same speed.
Make a hypothesis first
Predict: what happens if you double the force?
What You'll Learn
When you throw a ball up, gravity pulls it back down. The harder you throw, the higher it goes!
Key Words
- lever
- ramp
- pulley
Steps
Read about Forces with a partner or grown-up.
Push a toy car across the carpet, then across a smooth floor. Measure how far it goes each time.
Watch carefully. What happens?
Draw and write about what you learned.
Check Your Understanding
Question 1
1 of 3What is gravity?
Where you see this in real life
This is why airplanes can fly and why rockets reach space.
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.
For the dinner table
“Show me something at home that uses this kind of energy.”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
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