Lesson 67 of 84 · Forces
Lesson⭐ 30 XP⚡ Spark LabFriction Slows Things Down (Part 3)
Friction Slows Things Down (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
Friction is the force that slows things down. Rough surfaces have more friction than smooth ones.
Key Words
- attract
- repel
Steps
Look at the new words. Can you say each one?
Make a ramp from a book. Roll a marble down from different heights. Measure how far it rolls.
Use your senses to describe what you notice.
Write 1-2 sentences about what happened.
Check Your Understanding
Question 1
1 of 3What are the two poles of a magnet?
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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