Lesson 28 of 84 · Earth's History
Experiment⭐ 30 XP🌋 Rock RealmDeserts: Land of Extremes
Earth's History.
🎯 Your mission
Predict it first. Then prove yourself right (or wrong).
⚡ The twist
The slowest changes are the biggest ones.
Mind = Blown
🌊 The deepest part of the ocean is deeper than Mount Everest is tall.
Make a hypothesis first
Predict: which will erode faster?
What You'll Learn
Deserts receive less than 25 centimeters of rain per year. Hot deserts have extreme daytime temperatures, while cold deserts like Antarctica are dry but freezing.
Key Words
- volcano
- landform
Materials Needed
- thermometer
- rain gauge
- cotton balls
- food coloring
- clear container
Safety First
- Be careful with scissors — ask an adult for help if needed.
- Do not look directly at the sun or bright lights.
Steps
Read the introduction and identify the main idea of this lesson.
Build a working model of a volcano using baking soda and vinegar. Observe the eruption and explain what causes real volcanic eruptions.
Note any unexpected results and think about why they happened.
Share your findings with the class or a partner and discuss what you learned.
Check Your Understanding
Question 1
1 of 3What is a watershed?
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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