Deck 30: Plates of the Lithosphere

Question 1

The city of Los Angeles can be found on which tectonic plate?

A) Pacific Plate
B) North American Plate
C) Juan de Fuca Plate
D) Nazca Plate

Answer 1

A

Question 2

Which evidence did Alfred Wegener NOT use to support his hypothesis of one large supercontinent named Pangaea and its subsequent break up?

A) fossils of plants and animals were found on different continents
B) ocean floor drilling exposing remnants of similar continental rocks of two separate continents
C) geographic fit of continents
D) glacial features displaying direction of motion

Answer 2

B

Question 3

Alfred Wegener proposed that there was once a giant supercontinent he called Pangaea. He used the following evidence to support his hypothesis:

A) matching fossils across distant continents
B) matching similar rock types across distant continents
C) geographic fit of continents
D) all of the above

Answer 3

D

Question 4

Cold, old oceanic crust can be found:

A) along convergent plate boundaries near subduction zones
B) at the northernmost section of transform boundaries
C) at mid-ocean ridges
D) none of the above

Question 5

Oldest seafloor is found near midoceanic ridges and becomes progressively younger with increasing distance from the ridges.

Question 6

Crust is neither created nor destroyed at this boundary.

A) transform plate boundaries
B) divergent plate boundaries
C) spreading centers
D) convergent plate boundaries

Question 7

The East Africa Rift Zone is an area of:

A) elongated collapse of continental crust
B) crustal extension and thinning
C) a possible new ocean basin
D) all of the above

Question 8

All are true about plate boundaries EXCEPT:

A) distribution of active volcanoes occur on or near boundaries
B) location of global earthquakes occur along boundaries
C) life does not exist along boundaries
D) mountain ridges are common

Question 9

Mid-ocean ridges are present in all ocean basins.

Question 10

The area characterized by continental arcs and nearby deep sea trenches occurs along:

A) ocean-continent convergent boundaries
B) ocean-ocean convergent boundaries
C) continent-continent convergent boundaries
D) rift zones of divergent boundaries

Question 11

The _____ Plate meets the Pacific Plate along California's San Andreas Fault.

A) Nazca
B) North American
C) Juan de Fuca
D) South American

Question 12

The following statement is true with regard to the Atlantic Ocean:

A) The deepest part of the Atlantic Ocean is found right at the center
B) Observing the cross-section (side view) will show that the Atlantic Ocean's profile is shaped like a bowl with the deepest areas are at the center and gets shallower as you move toward the continents
C) The mid-Atlantic oceanic ridge is a chain of volcanoes resulting from a converging plate boundary
D) The oldest oceanic crust is found near continents