Lesson 55 of 84 · Forces
Experiment⭐ 30 XP⚡ Spark LabWheels and Axles (Part 2)
Wheels and Axles (Part 2).
🎯 Your mission
Run the experiment. Find out what really happens.
⚡ 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 helps you walk. Without friction, your feet would slip on the floor!
Key Words
- pull
- balance
- weight
Materials Needed
- toy cars
- ramps
- string
Safety First
- Protect your work surface with newspaper or plastic.
Steps
Talk about what you already know about Forces.
Build a simple lever with a ruler and pencil. Try lifting objects on one end by pushing the other.
Compare what happened to what you predicted.
Tell the class one thing you learned today.
Check Your Understanding
Question 1
1 of 3What is a force?
Where you see this in real life
You use this every time you flip a light switch, ride a bike, or kick a ball.
Stretch Challenge
Try this in real life this week.
Time how long a small ball rolls down something, then change the slope and try again.
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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