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Lesson 80 of 84 · Earth Systems

Lesson30 XP🌋 Rock Realm

What Causes Earthquakes? (Part 3)

🧪Lab Brief #80

Earth Systems.

🎯 Your mission

Understand the idea. Then look for it everywhere.

⚡ 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 the ground shakes. They are caused by movement deep under the Earth's surface.

Key Words

Tap a word to see its definition.

Steps

Step 1Read

Talk about what you already know about Earth Systems.

Step 2Do

Sort rocks by color, size, and texture. Record how many are in each group.

Step 3Observe

Compare what happened to what you predicted.

Step 4Record

Tell the class one thing you learned today.

Check Your Understanding

Question 1

1 of 3

What is soil made of?

🌍

Where you see this in real life

Today's weather, tomorrow's beach, next century's coastline — all this.

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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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Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

🌱Share card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

🖨️

Checkout complete lesson on Earth Systems for 2nd Grade

Get the full Earth Systems track as a printable PDF — all lessons, worksheets, and answer keys.

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What Causes Earthquakes? (Part 3) — Earth Systems | 2nd Grade Science | LittleActivity