Lesson 48 of 84 · Forces and Motion
Simulation⭐ 30 XP⚡ Spark LabWork and Power (Part 2)
Forces and Motion.
🎯 Your mission
Play with the model. Break it. Understand it.
⚡ 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
Work in science means using a force to move an object a distance. If you push a box across the floor, you do work. If you push a wall and it doesn't move, no work is done.
Key Words
- simple machine
- lever
Steps
Look at the vocabulary words and write a definition for each in your own words.
Build a simple circuit using a battery, wire, and light bulb. Then add a switch and test what happens when you open and close it.
Use your senses (except taste) to describe what you notice.
Write a summary of your findings in 3-5 sentences.
Check Your Understanding
Question 1
1 of 3What is work in science?
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.
Checkout complete lesson on Forces and Motion for 3rd Grade
Get the full Forces and Motion track as a printable PDF — all lessons, worksheets, and answer keys.