Structure, Tectonics, and Seismology

Question 1

What is the equation relating apparent dip, dip and the angle between the strike and apparent dip direction?

Answer 1

tan α = tan δ sin β

Question 2

How do you solve for Sin α?

Answer 2

Sin = Opposite Side / Hypotenuse

Question 3

How do you solve for Cos α?

Answer 3

Cos = Adjacent Side / Hypotenuse

Question 4

How do you solve for Tan α?

Answer 4

Tan = Opposite Side/ Adjacent Side

Question 5

What is “N25°W, 15°S” stating?

Answer 5

The Strike is 25° West of North and the Dip is 15° South

Question 6

Where is the epicenter of an earthquake located relative to the focus?

Answer 6

Above the focus on the surface of the Earth.

Question 7

True or False: S-waves can’t travel through liquids?

Answer 7

True.

Question 8

What are the 2 types of body waves?

Answer 8

P (primary) and S (secondary) waves

Question 9

What are the 2 types of surface waves?

Answer 9

L (love) and R (rayleigh) waves

Question 10

What motion do P waves exhibit?

Answer 10

Push and pull

Question 11

What motion do S waves exhibit?

Answer 11

Shear

Question 12

What are the most damaging earthquake waves? Hint: they shake the earth back and forth?

Answer 12

Surface waves