Exam One

Question 1

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

Answer 1

Peridotite

Question 2

Earth’s lithosphere consist of _____, and ________

Answer 2

Crust and solid upper mantle

Question 3

Which of the following are all major lithospheric plates?

Answer 3

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

Question 4

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

Answer 4

Decompression melting as pressure decreases

Question 5

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

Answer 5

National Monument

Question 6

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

Answer 6

National Wilderness

Question 7

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

Answer 7

National Preserve

Question 8

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

Answer 8

Yellowstone National Park

Question 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.

Answer 9

National Parks

Question 10

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

Answer 10

Plate Tectonic Theory