Lesson 72 of 84 · Forces
Experiment⭐ 30 XP⚡ Spark LabWeighing on a Balance Scale (Part 3)
Weighing on a Balance Scale (Part 3).
🎯 Your mission
Predict it first. Then prove yourself right (or wrong).
⚡ The twist
Energy never disappears — it just hides somewhere else.
Mind = Blown
⚡ Static electricity is the same physics as lightning, just smaller.
Make a hypothesis first
Before you start: which will move faster, and why?
What You'll Learn
A balance scale compares the weight of two objects. The heavier side goes down!
Key Words
Tap a word to see its definition.
Materials Needed
- pencils
- toy cars
- ramps
- string
- weights
Safety First
- Be careful with scissors — ask an adult for help if needed.
- Do not look directly at the sun or bright lights.
- Clean up spills immediately to prevent slipping.
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 force keeps you on the ground?
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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