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Lesson 46 of 84 ยท Weathering and Erosion

Lessonโญ 30 XP๐ŸŒ‹ Rock Realm

Earthquakes: When the Ground Shakes (Part 2)

๐ŸงชLab Brief #46

Weathering and Erosion.

๐ŸŽฏ Your mission

Learn the rule. Then catch nature using it.

โšก The twist

Weather isn't random โ€” it's just complicated.

๐Ÿคฏ

Mind = Blown

๐ŸŒŠ The deepest part of the ocean is deeper than Mount Everest is tall.

๐Ÿ”ฎ

Make a hypothesis first

Before you observe: what shape will it leave?

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

Steps

Step 1 โ€” Read

Read about Weathering and Erosion and write down three key facts.

Step 2 โ€” Do

Test rock hardness using Mohs scale: try scratching rocks with your fingernail, a penny, and a nail. Rank them from softest to hardest.

Step 3 โ€” Observe

Look for patterns in your observations.

Step 4 โ€” Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

What is an aquifer?

๐ŸŒ

Where you see this in real life

Today's weather, tomorrow's beach, next century's coastline โ€” all this.

๐Ÿ†

Stretch Challenge

Try this in real life this week.

Look at the sky for 5 minutes and try to predict tomorrow's weather.

๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘ง

For the dinner table

โ€œWhat's the slowest change you can think of?โ€

๐ŸŽฏ

Next Smart Experiment

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

๐ŸŒShare card

Share this experiment

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

๐Ÿ–จ๏ธ

Checkout complete lesson on Weathering and Erosion for 4th Grade

Get the full Weathering and Erosion track as a printable PDF โ€” all lessons, worksheets, and answer keys.

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Earthquakes: When the Ground Shakes (Part 2) โ€” Weathering and Erosion | 4th Grade Science | LittleActivity | LittleActivity