49
Lesson 49 of 84 · Earth Materials
ExperimentThe Sun Warms the Earth (Part 2)
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
Materials Needed
- plastic tray
- magnifying glass
- newspaper
- spray bottle
Safety First
- Protect your work surface with newspaper or plastic.
- Adult supervision recommended.
- Do not taste any materials.
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?