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Lesson 39 of 84 · Earth Systems
ExperimentErosion: 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
- erosion
- weathering
- sediment
Materials Needed
- water
- plastic tray
- magnifying glass
Safety First
- Do not look directly at the sun or bright lights.
- Clean up spills immediately to prevent slipping.
- 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 3What is erosion?