30
Lesson 30 of 84 · Plate Tectonics
ExperimentLandforms: Mountains, Valleys, Plains
What You'll Learn
Landslides occur when slopes become unstable due to heavy rain, earthquakes, or human activity. Gravity pulls loose rock and soil downhill, sometimes with devastating speed.
Key Words
- precipitation
- water cycle
- natural resource
Materials Needed
- rain gauge
- cotton balls
- food coloring
Safety First
- Be careful with scissors — ask an adult for help if needed.
Steps
Step 1 — Read
Read and learn: Landslides occur when slopes become unstable due to heavy rain, earthquakes, or human activity. Gravity pulls loose rock and soil downhill, sometimes with devastating speed.
Step 2 — Do
Measure and record your data in a table.
Step 3 — Observe
Watch carefully for any changes and note the time.
Step 4 — Record
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What is the ozone layer?