Lesson 79 of 84 · Forces
Experiment⭐ 30 XP⚡ Spark LabLevers and Seesaws (Part 3)
Levers and Seesaws (Part 3).
🎯 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
A lever is a simple machine. A seesaw is a lever—push down on one end and the other goes up!
Key Words
Tap a word to see its definition.
Materials Needed
- marbles
- paper clips
- rubber bands
- blocks
Safety First
- Adult supervision recommended.
- Do not taste any materials.
- Wear safety goggles when mixing liquids.
Steps
Look at the picture and read the labels.
Drop a feather and a coin at the same time from the same height. Which hits the ground first?
Draw a picture of what you observe.
Share your results with a partner.
Check Your Understanding
Question 1
1 of 3How can you make something move?
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.
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Send it to a parent who's looking for a 10-minute kitchen science win.
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