Lesson 79 of 84 · Weathering and Erosion
Lesson⭐ 30 XP🌋 Rock RealmLayers of the Earth (Part 3)
Weathering and Erosion.
🎯 Your mission
Learn the rule. Then catch nature using it.
⚡ The twist
Weather isn't random — it's just complicated.
Mind = Blown
🌊 The deepest part of the ocean is deeper than Mount Everest is tall.
Make a hypothesis first
Before you observe: what shape will it leave?
What You'll Learn
Earth has three main layers: the thin outer crust, the thick mantle, and the dense core. The core has a liquid outer layer and a solid inner layer made mostly of iron.
Key Words
- weathering
- erosion
- sediment
Steps
Review the background information on Weathering and Erosion before starting.
Model erosion: tilt a tray of soil and pour water from a cup at the top. Observe how channels form. Try adding plants or rocks to slow the erosion.
Watch carefully for any changes and note the time.
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What causes earthquakes?
Where you see this in real life
Today's weather, tomorrow's beach, next century's coastline — all this.
Stretch Challenge
Try this in real life this week.
Look at the sky for 5 minutes and try to predict tomorrow's weather.
For the dinner table
“What's the slowest change you can think of?”
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 Weathering and Erosion for 4th Grade
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