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Flashcards in Exam One Deck (10):
1

The mantle is composed of a dense rock rich in iron and magnesium, but relatively low in silica content is_______.

Peridotite

2

Earth's lithosphere consist of _____, and ________

Crust and solid upper mantle

3

Which of the following are all major lithospheric plates?

South American, Antarctic, Pacific, Auntralian-Indian, and African.

4

Mantle rocks near Earth's surface change from a plastic to a molten liquid (magma) state because of

Decompression melting as pressure decreases

5

______ is a small area which may preserve one or a few unique resources (e.g Civil War Battlefield)

National Monument

6

________ an area of undeveloped Federal Land retaining in primeval character and influence without permanent improvements or human habitation

National Wilderness

7

_____ is an area having great scenic and scientific importance, but in which Congress has permitted continued hunting, trapping, oil/gas exploration and extraction

National Preserve

8

_______ was the first U.S national park, established in 1872 by an act of Congress.

Yellowstone National Park

9

______ is an area, set aside by an act of Congress, having great scenic and scientific importance, without boundaries that provide for enough land and water to protect the resources.

National Parks

10

According to _______, lithospheric plates are in motion, driven by convective movement of mantle rocks.

Plate Tectonic Theory