Erosion: Moving Earth's Surface (Part 2)

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

water
plastic tray
magnifying glass

Safety First

Use materials only as directed in the experiment.

Steps

Step 1 — Read

Review the background information on Earth Systems before starting.

Step 2 — Do

Build a working model of a volcano using baking soda and vinegar. Observe the eruption and explain what causes real volcanic eruptions.

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?