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Below is an outline for the video Earthquakes, part of the Earth Revealed series. This video will be viewed in class. This video is also available for viewing online at the following link: Earth Revealed: Earthquakes.

Earth Revealed: Earthquakes

Earthquake Myths
Earthquakes Defined
Seismic Waves
• P-Waves
• S-Waves
• L-Waves
• R-Waves
Seismographs
Magnitude Scales
Surface Waves
Parkfield, California Project
Motion Detection Equipment

Earthquakes

What are earthquakes?

How are earthquakes generated?
1)
2)
3)
4)
5)

What is the hypocenter of an earthquake?

What is the epicenter of an earthquake?

Where do most earthquakes occur?

With what tectonic features are earthquakes associated?

Seismic Waves

What are the four forms of seismic waves and their properties?
1)
2)
3)
4)

Location of the Epicenter

How is this difference in seismic wave speed used to determine the distance to the epicenter of the earthquake?
Distance to the epicenter equation:

Earthquake Magnitudes

What is the magnitude of an earthquake really measuring?

What is the earthquake scale?

Magnitude Size

Magnitude	Times Larger than a Magnitude 1	Exponential
1	1	300
2		301
3		302
4		303
5		304
6		305
7		306
8		307
9		308

Largest Earthquakes

Largest Earthquakes in the World Since 1900
Location	Year	Magnitude
1. Chile	1960
2. Prince William, Alaska	1964
3. Off the Coast of N. Sumatra	2004
4. Kamchatka	1952
5. Off the Coast of Ecuador	1906
6. N. Sumatra, Indonesia	2005
7. Rat Islands, Alaska	1965
8. Andreanof Islands., Alaska	1957
9. Assam, Tibet	1950
10. Kuril Islands	1963

Earthquakes Damage

Why does an earthquake destroy or seriously damage one building, while buildings on either side of it may be undamaged or only slightly damaged?

Earthquake Monitoring

With what type of equipment are seismic waves measured?

What are some of the tools and equipment being used to monitor and predict earthquakes?

Can earthquakes be predicted with any certainty?

 

Study Guide

Earthquakes video Study Guide

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