Lesson 75 of 84 · Simple Electricity
Experiment⭐ 30 XP⚡ Spark LabElectric Circuits (Part 3)
Simple Electricity.
🎯 Your mission
Set it up. Test it. Be amazed.
⚡ The twist
Energy never disappears — it just hides somewhere else.
Mind = Blown
🎢 You feel weightless on a roller coaster because you and the seat are falling at the same speed.
Make a hypothesis first
Before you start: which will move faster, and why?
What You'll Learn
Energy can be transformed from one form to another but cannot be created or destroyed. A light bulb converts electrical energy into light and heat energy.
Key Words
- kinetic
- potential
Materials Needed
- ruler
- cardboard
- marbles
- paper clips
Safety First
- Wash hands after handling materials.
Steps
Read the introduction and identify the main idea of this lesson.
Set up a pendulum with string and a washer. Change the string length and count swings per minute for each. Graph your results.
Compare the before and after states.
Write your conclusion: did the results match your hypothesis? What would you change next time?
Check Your Understanding
Question 1
1 of 3What is needed for a simple electric circuit?
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.
Checkout complete lesson on Simple Electricity for 3rd Grade
Get the full Simple Electricity track as a printable PDF — all lessons, worksheets, and answer keys.