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Lesson 79 of 84 · Weather
ExperimentThe Sun Warms the Earth (Part 3)
What You'll Learn
The sun warms the land and water, which warms the air. Warm air rises and cool air sinks.
Key Words
- erosion
- landform
- mountain
Materials Needed
- rain gauge
- cotton balls
- food coloring
Safety First
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Look at the picture and read the labels.
Step 2 — Do
Pour water on a pile of sand and a pile of rocks. Watch how the water flows differently.
Step 3 — Observe
Draw a picture of what you observe.
Step 4 — Record
Share your results with a partner.
Check Your Understanding
Question 1
1 of 3What causes wind?