Earthquakes

Question 1

What are movements of the ground that are caused by a sudden release of energy when rocks along a fault move?

Answer 1

Earthquakes

Question 2

What is the sudden return of elastically deformed rock to its undeformed shape called?

Answer 2

Elastic Rebound

Question 3

What is the location within the Earth along a fault at which the first motion of an earthquake occurs?

Answer 3

Focus

Question 4

What is the point of the Earth’s surface directly above the focus called?

Answer 4

Epicenter

Question 5

What are the released energy in the form of vibrations called when rocks move along the faults?

Answer 5

Seismic Waves

Question 6

What are the waves that travel through the body of a medium called?

Answer 6

Body Waves

Question 7

What are the waves that travel along the surface of a body rather than through the middle?

Answer 7

Surface Waves

Question 8

What type of body waves are the primary waves, usually the fastest are called?

Answer 8

P Waves

Question 9

What type of body waves are the 2nd fastest seismic waves, and are usually the roughest called?

Answer 9

S Waves

Question 10

What is the name of the instrument used to record vibrations in the ground?

Answer 10

Seismograph

Question 11

What do you call the tracing of earthquake motion that is recorded by a seismograph?

Answer 11

Seismogram

Question 12

What is the measure of the strength of an earthquake?

Answer 12

Magnitude