Physical Geology Exploring The Earth 6th Edition By James S. Monroe – Test Bank

CHAPTER 12 TEST QUESTIONS

TRUE OR FALSE

1. The Pacific, Atlantic, Arctic, and Indian Oceans form one interconnected ocean.

ANSWER: true

2. The geologic margin of a continent is the land area outlined by sea level.

ANSWER: false

3. The change from continental crust to oceanic crust occurs beneath the continental slope.

ANSWER: true

4. The continental shelf is always very wide, extending tens to hundreds of kilometers seaward.

ANSWER: false

5. The sediment accumulated on continental shelves consists of channel and floodplain deposits from a time when sea level was lower.

ANSWER: true

6. Submarine canyons are eroded by turbidity currents.

ANSWER: false

7. An active continental margin forms adjacent a spreading ridge as a new ocean is being created.

ANSWER: false

8. Relative to an active margin, the continental shelf on a passive margin would be wider.

ANSWER: true

9. Relative to an active margin, the continental slope along a passive margin descends directly into a trench.

ANSWER: false

10. Abyssal plains tend to be most common seaward of passive continental margins.

ANSWER: true

11. Rifting within continental crust is an important element in the initial development of an ocean.

ANSWER: true