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Earthquakes

Test Description: Earthquakes

Instructions: Answer all questions to get your test result.

1) What is usually responsible for an earthquake?

Aweathering along coastlines Bpressure buildup within the mantle Cslippage along faults within the Earth's crust Dforce changes from the moon pulling on Earth

2) Scientists use volcanoes and earthquake activity to establish

Alines of latitude Bplate boundaries Cthe density of rock layers Dborders between countries

3) The point from which an earthquake originates is called the

Aepicenter Bfault line Cfocus Dshock wave

4) What is the minimium number of seismographic stations needed to locate the epicenter of an earthquake?

A10 B2 C5 D3

5) If the locations of earthquakes over the past 10 years were plotted on a world map, which of the following would be observed?

AEarthquakes most frequently occur near the middle of continents. BEarthquakes occur with the same frequency everywhere on Earth. CEarthquakes do not seem to occur in any consistent pattern. DEarthquakes generally occur along the edges of tectonic plates.

6) The study of how seismic waves change as they travel through Earth has revealed that

AEarth's outer core is liquid because S-waves are not transmitted through this layer Bseismic waves travel more slowly through the mantle because it is very dense CP-waves travel more slowly than S-waves through Earth's crust DEarth's outer core is solid because P-waves are not transmitted through this layer

7) Two tectonic plates sliding past each other like the movement at the San Andreas fault causes what type of fault?

Anormal fault Breverse fault Cthrust fault Dstrike-slip fault

8) The majority of earthquakes and volcanoes occur around the Pacific Ocean Plate which is known as

AMercalli's area Bthe ring of fire Cthe zone of aeration DPangaea

9) The location on the surface of Earth directly above the origin of an earthquake is known as the

Afocus Bfault line Cepicenter Dshock wave

10) Which earthquake wave travels the fastest and arrives first?

AS-wave BLove wave CL-wave DP-wave

*select an answer for all questions

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