Lesson 81 of 84 · Weathering and Erosion
Experiment⭐ 30 XP🌋 Rock RealmEarthquakes: When the Ground Shakes (Part 3)
Weathering and Erosion.
🎯 Your mission
Set it up. Test it. Be amazed.
⚡ The twist
The slowest changes are the biggest ones.
Mind = Blown
🪨 Every grain of sand on every beach used to be a mountain.
Make a hypothesis first
Predict: which will erode faster?
What You'll Learn
Earthquakes happen when stress builds up along faults in Earth's crust and suddenly releases. Seismic waves radiate from the focus, shaking the ground.
Key Words
- erosion
- sediment
- igneous
Materials Needed
- cotton balls
- food coloring
- clear container
- rocks
- sand
- clay
Safety First
- Wear safety goggles when mixing liquids.
- Wash hands after handling materials.
- Be careful with scissors — ask an adult for help if needed.
Steps
Read about Weathering and Erosion and write down three key facts.
Test rock hardness using Mohs scale: try scratching rocks with your fingernail, a penny, and a nail. Rank them from softest to hardest.
Look for patterns in your observations.
Make a graph or chart showing your results.
Check Your Understanding
Question 1
1 of 3What is an aquifer?
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?”
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