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Geologists who specifically study earthquakes are called _____

seismologists

1

earthquakes are often results of ________

lithospheric-plate movement

2

a primary force opposing on all faults is _______

friction

3

aftershock following major earthquake ______

may continue for days
are mostly smaller than the original earthquake
may occur on the same or a different fault

4

the stress (applied force) that builds on a preexisting fault that has previously ruptured _____

must overcome the force of friction to cause an earthquake

5

in order for an earthquake to occur where you live, which of the following must be true?

energy must be released in the earths crust

6

the image below of a coiled spring is illustrating a ____ wave

p wave

7

which type of seismic wave has the highest velocity?

p wave

8

earthquake waves that pass through the interior of earth are termed ____

body waves

9

as a seismologist examining a seismogram, you would know that the third set of waves displayed _____

would cause the most damage

10

seismometers, being able to detect ground movements of a millionth of a millimeter, are useful to governments worldwide for detecting not only earthquakes, but______

nuclear bomb test

11

all else being equal, an earthquake that strikes in the eastern United States would produce shaking that would be felt ______ than one that occurred in the western United States.

over a greater distance

12

the key to finding the location of an earthquake's epicenter is measuring ______

difference between the time that the p wave and then the S wave to arrive at the seismometer station

13

the point within earth where an earthquake takes place is termed the ______-

hypocenter (focus)

14

the point on earths surface surface directly above the point where an earthquake occurs is termed the ____

epicenter

15

how many seismic stations are necessary to find the epicenetr of aan earthquake?

three

16

which earthquake severity scale takes vibration caused by the S wave into account when estimating the size of an earthquake?

Richter scale

17

which earthquake intensity scale assess the effects of an earthquake on humans and human made structures?

mercalli scale

18

an earthquake occurs with an epicenter in the town of new madrid, missouri, in the interior of the North American plate. which might the hypocenter of this earthquake plausibly be found?

20 km beneath new madrid

19

which earthquake severity scale varies from locality for a single earthquake?

mercalli scale

20

earthquakes are likely to occur along _____

all of the plate boundary types

21

medium-and deep-focus earthquakes occur along _____

convergent plate boundaries

22

how can damage and injury be minimized in areas prone to seismic activity?

earthquake zoning
engineering controls
warning systems