Lesson 41 of 84 · Forces
Simulation⭐ 30 XP⚡ Spark LabLevers Help Us Lift (Part 2)
Levers Help Us Lift (Part 2).
🎯 Your mission
Push the limits. See what changes.
⚡ The twist
Speed isn't the same as force. Don't mix them up.
Mind = Blown
🔥 A bolt of lightning is 5 times hotter than the surface of the sun.
Make a hypothesis first
Guess: where does the energy go?
What You'll Learn
A pulley is a wheel with a rope. It helps you lift heavy things by changing the direction of your pull.
Key Words
- friction
- speed
- direction
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 3Which simple machine is a ramp?
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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