1.What are the zones of the earth’s interior? (Start from the surface and identi

Question

1.What are the zones of the earth’s interior? (Start from the surface and identify the different layers all the way to the center. Include a description of the asthenosphere.

2.What is an earthquake? What causes them?

3.Name and describe the different types of earthquake waves (what material will they travel through; what kind of wave motion is involved).

4.How is the epicenter location determined?

5.When we hear on the news that an earthquake has a magnitude of 7, what does this mean? What scale is being used? How does the scale work? What information is needed for the calculations?

6.Around the world, where do most earthquakes occur? Why in these locations?

7.What are the main factors that determine the amount of building destruction caused by an earthquake?

Explanation / Answer

1. Earth is divided into four difediffe layers genarally:

2. An earthquake is a sudden tremor or shaking that is felt on the surface of the earth due the release of potential energy blocked up in the rocks of the earth. The earthquake occurs due to movement of rocks upon a sudden fracture in them, or due to volcanic eruption or also, due to man-made reasons.

3. The different types of earthquake waves are:

4. The epicenter location is determined by the records on the seismograph.The seismologists use the difference between the time taken by P and S waves to travel as recorded in the seismograph to calculate the epicenter.

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