How is throwing a rock in a calm pool of water related to earthquake rupture on the surface of the
earth?
If you were a frog sitting on a lily pad, what motions would you feel as the wave (disturbance) from the rock
hitting the pond passes along the water surface. How would this relate to an earthquake on land.
In your own words and after viewing the lecture, write a “scientific” definition of an earthquake.
Draw a block diagram and define the following common terms that apply to earthquakes
Epicenter b. Focus c. Seismic Waves d. Hypocenter
Relationship questions:
How is the epicenter related but different from the focus?
How is the focus and hypocenter related?
Why are seismic waves considered vibrations
- Earthquakes are measured using the seismograph.
Relationship questions:
What does the seismograph measure during an earthquake?
Describe the differences between a seismograph and seismogram
Why is it important to have several seismograph stations measuring the same earthquake? - The Elastic Rebound Theory:
Relationship questions:
From lecture, describe in your own words, the elastic rebound theory
Now, from question 1 above, redescribe the elastic rebound theory using the terms: stress, strain, potential
energy, kinetic energy, and vibrations. How did these terms fit into your first description of the elastic rebound
theory
How do aftershocks from an earthquake relate to the elastic rebound theory?
Sample Solution