Zones Of Crustal Activity Question Preview (ID: 56792)

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In which region of the ocean is the submarine canyon located?

a) tidal zone

b) continental margin

c) deep ocean basin

d) mid-ocean ridge

Which location is closest to a major zone of frequent earthquakes and volcanic activities?

a) A

b) B

c) C

d) D

The movement of tectonic plates is inferred by many scientists to be driven by

a) tidal motions in the hydrosphere

b) density differences in the troposphere

c) convection currents in the asthenosphere

d) solidification in the lithosphere

Mid-ocean ridges such as the East Pacific Rise and the Oceanic Ridge are best described as

a) mountains containing folded sedimentary rocks

b) mountains containing fossils of present-day marine life

c) sections of the ocean floor that contain the youngest oceanic crust

d) sections of the ocean floor that are the remains of a submerged continent

The crust at the mid-ocean ridges is composed mainly of

a) granite

b) shale

c) basalt

d) limestone

Movement of the crustal plates shown in the diagram is most likely caused by

a) the revolution of the Earth

b) the erosion of the Earth's crust

c) shifting of the Earth's magnetic poles

d) convection currents in the Earth's mantle

The edges of most lithospheric plates are characterized by

a) reversed magnetic orientation

b) unusually rapid radioactive decay

c) frequent volcanic activity

d) low P-wave and high S-wave velocity

The diagrams below show four major types of fault motion occurring in Earth’s crust. Which type of fault motion best matches the general pattern of crustal movement at California’s San Andreas fault?

a) A

b) B

c) C

d) D

Which two features are commonly found at divergent plate boundaries?

a) mid-ocean ridges and rift valleys

b) wide valleys and deltas

c) ocean trenches and subduction zones

d) hot spots and island arcs

Which coastal area is most likely to experience a severe earthquake?

a) east coast of North America

b) east coast of Australia

c) west coast of Africa

d) west coast of South America

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