EARTH SCIENCE - Structural Geology QUESTION 5 The continental crust is made prim

Question

EARTH SCIENCE - Structural Geology

QUESTION 5 The continental crust is made primarily of whereas the oceanic crust is made from QUESTION The time difference between the arrival of the first P waves and the arrival of the first S waves at a seismic station is a function of the intensity of the earthquake used to determine the distance to the location of the earthquake. related to the air temperature. dependent on the type of seismograph used. QUESTION 7 A fault is a fracture in the Earth's crust where no movement has occurred. a bending of the crust that results from extensional forces. a fracture in the crust along which there has been significant movement. O the same as a joint or fracture. QUESTION A typical rate for seafloor spreading is 2 inches per year 2 feet per year 20 feet per year 20 cm per year

Explanation / Answer

5) The continental crust is made primarily of granites, where as oceanic crust is made from basalts.

6) The time difference between the arrival of the first p-waves and arrival of the first s-waves at a seismic section is_____.

Ans. Used to determine the distance to the location of the earthquake.

7) A fault is______.

Ans. A fracturein the crust along which there has been significant movement.

8) A typical rate of seafloor spreading is_____.

Ans. 2 inches per year.

9) This layer is the outermost layer of the Earth. It ranges in thickness from 5-70km.

Ans. Crust.

10) New oceanic crust is formed at divergent plate boundaries, whereas oceanic crust is destroyed at convergent plate boundaries.

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