Dynamic crust (general terms)

Question 1

Asthenosphere

Answer 1

partly liquid layer of the earth’s upper mantle just below the crust

Question 2

continental crust

Answer 2

part of the earth’s crust (lithosphere) that makes up continents. Made of mostly granite (felsic)

Question 3

convergent plate

Answer 3

boundary between two colliding plates

Question 4

crust

Answer 4

outermost portion of the earths solid layer. Also called the lithosphere

Question 5

divergent plate

Answer 5

part of the earth’s crust moving from mid-ocean ridges

Question 6

earthquakes

Answer 6

shaking of the earths crust due to release of energy in the crust

Question 7

epicenter

Answer 7

point on the surface above the focus. Origin of an earthquake

Question 8

faulted

Answer 8

rock layers that are offset

Question 9

focus

Answer 9

point where an earthquake originates in the crust

Question 10

folded

Answer 10

bent rock layers due to convergence of the lithosphere

Question 11

hot spot

Answer 11

region of volcanic activity on the interior of plates, may also be plate boundaries

Question 12

inner core

Answer 12

innermost portion of the earth

Question 13

island arc

Answer 13

island chains associated with convergent plate boundaries, Aleutian islands

Question 14

mantle

Answer 14

solid portion between the crust and the outer core

Question 15

Moho

Answer 15

The interface between the earths crust and the mantle

Question 16

ocean crust

Answer 16

portion of the earth’s crust below the ocean. Made of mostly basalt (mafic)

Question 17

ocean trench

Answer 17

deep narrow zone along the subduction zone

Question 18

original horizontality

Answer 18

states that rock layers are deposited horizontally until they harden

Question 19

outer core

Answer 19

zone of earth between the mantle and inner core. Made of liquid

Question 20

P-waves

Answer 20

earthquake waves that move between liquid and solid. Primary waves

Question 21

S-waves

Answer 21

move through liquid only

Question 22

uplifted

Answer 22

crust raised from tectonic plates-mountains formed

Question 23

compression wave

Answer 23

particles in object vibrate back and forth producing compressions and rarefactions in the same directions that the wave is proceeding

Question 24

continental rift

Answer 24

A narrow valley at a divergent plate boundary under a continent that can tear a landmass into two separate landmasses