Lesson 56 of 84 · Forces
Lesson⭐ 30 XP⚡ Spark LabThe Wedge Machine (Part 2)
The Wedge Machine (Part 2).
🎯 Your mission
Understand the idea. Then look for it everywhere.
⚡ 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 wedge is a simple machine shaped like a triangle. A doorstop is a wedge!
Key Words
Tap a word to see its definition.
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
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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