Erosion: Moving Earth's Surface

What You'll Learn

Wind forms when the sun heats Earth's surface unevenly, creating pressure differences. Air moves from high pressure to low pressure areas, and Earth's rotation curves the wind paths.

Key Words

earthquake
volcano
atmosphere

Materials Needed

cotton balls
food coloring
clear container
rocks
sand
clay

Safety First

Use materials only as directed in the experiment.
Keep small objects away from young children.

Steps

Step 1 — Read

Read and learn: Wind forms when the sun heats Earth's surface unevenly, creating pressure differences. Air moves from high pressure to low pressure areas, and Earth's rotation curves the wind paths.

Step 2 — Do

Conduct the experiment by following the instructions.

Step 3 — Observe

Look for patterns in your observations.

Step 4 — Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

What is erosion?