Lesson 74 of 84 · Earth Systems
Lesson⭐ 30 XP🌋 Rock RealmHow Sand Is Made (Part 3)
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
Sand at the beach was once big rocks that broke down over millions of years.
Key Words
Tap a word to see its definition.
Steps
Look at the picture and read the labels.
Pour water on a pile of sand and a pile of rocks. Watch how the water flows differently.
Draw a picture of what you observe.
Share your results with a partner.
Check Your Understanding
Question 1
1 of 3What is a volcano?
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.
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