81
Lesson 81 of 84 · Earth Systems
ExperimentEarthquakes: When the Ground Shakes (Part 3)
What You'll Learn
Earthquakes happen when stress builds up along faults in Earth's crust and suddenly releases. Seismic waves radiate from the focus, shaking the ground.
Key Words
- erosion
- sediment
- igneous
Materials Needed
- food coloring
- clear container
- rocks
- sand
- clay
Safety First
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
- Dispose of materials properly after the experiment.
Steps
Step 1 — Read
Read and learn: Earthquakes happen when stress builds up along faults in Earth's crust and suddenly releases. Seismic waves radiate from the focus, shaking the ground.
Step 2 — Do
Build your model using the materials provided.
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 an aquifer?