Chapter 2 exam; 9/26

Question 1

Plate tectonics

Answer 1

The theory that explains the mobility of Earth’s crust and the large-scale features of continents and ocean basin

Question 2

Continental drift

Answer 2

The theory that envisions continents moving slowly across the surface of the Earth

Question 3

Pangea

Answer 3

Name of the super-continent, greek for “all Earth”

Question 4

Lithosphere

Answer 4

outer shell of Earth, composed of oceanic and continental crust and the uppermost portion of mantle

Question 5

Asthenosphere

Answer 5

Semi-plastic region of mantle that the lithosphere floats on

Question 6

Divergent boundary

Answer 6

Plate boundary where plates move away from each other

Question 7

Convergent Boundary

Answer 7

Plate boundary where plates move towards each other

Question 8

Transform Boundary

Answer 8

Plate boundary where plates slide past each other

Question 9

Passive margin

Answer 9

Coastal margin characterized by wide continental shelves, flatlands, not tectonically active

Question 10

Oceanic crust

Answer 10

Crust that is more dense but less thick than continental crust

Question 11

Continental crust

Answer 11

Crust that is less dense but more thick than oceanic crust

Question 12

Subduction

Answer 12

The process of plates descending into mantle at convergence zones

Question 13

Convection Cells

Answer 13

a process where hot material rises and cool material descends, thought to be present within the Earth

Question 14

Continental shelves

Answer 14

Submerged, shallow extensions of continents stretching from the shoreline towards the sea

Question 15

Nearshore

Answer 15

Area just offshore, where the surf zone develops

Question 16

Foreshore

Answer 16

intertidal region of beach

Question 17

Intertidal

Answer 17

Area that is covered during high tide but exposed during low tide

Question 18

Backshore

Answer 18

dry region of beach

Question 19

Dredging

Answer 19

the process of removing sand from the bottom of water bodies

Question 20

Rip current

Answer 20

a flow of water from the beach back out to sea which tends to follow saddles in longshore bars

Question 21

Backbarrier

Answer 21

The region separating barriers from the coast, consisting of tidal flats, shallow bays, lagoons and/or marsh systems

Question 22

Sand

Answer 22

the most common constituent of barriers

Question 23

Tidal range

Answer 23

the vertical difference between high and low tide

Question 24

Antarctica

Answer 24

the only continent without barriers