Chapter 2

Question 1

What was used as evidence for continental drift?

Answer 1

Rock sequences, fossils, ancient glaciation

Question 2

Alfred Wegener’s continental drift hypothesis received much hostile criticism and ridicule from the scientific community because _________?

Answer 2

It lacked a mechanism

Question 3

Fossils of ancient polar plants are currently found near the equator because the _____.

Answer 3

Continents that were once in tropical areas are now near the poles

Question 4

What is the most convincing piece of evidence to support the concept of seafloor spreading?

Answer 4

Paleomagnetism - igneous rock stripes

Question 5

The seafloor magnetic pattern is best described as ______.

Answer 5

Symmetric, parallel

Question 6

Tectonic plates are pieces of the _____ that float on the more fluid ____ below.

Answer 6

Lithosphere, asthenosphere

Question 7

Tectonic plates move about as fast as ____.

Answer 7

Fingernails

Question 8

The Mid-Atlantic Ridge is an example of a _____.

Answer 8

Divergent plate boundary

Question 9

Deep ocean trenches are associated with _______.

Answer 9

Subduction

Question 10

What is a characteristic of oceanic-oceanic convergent plate boundaries?

Answer 10

Trench, volcanic arc as islands

Question 11

What is a characteristic of continental-continental convergent plate boundaries?

Answer 11

Tall mountains

Question 12

The San Andreas Fault ______.

Answer 12

Continental transform boundary

Question 13

The Himalaya Mountains are an example of _____ plate boundary.

Answer 13

Convergent

Question 14

The Hawaiian Islands are located where the Pacific plate is _______.

Answer 14

Moving over the hotspot

Question 15

Chains of extinct volcanoes that are progressively older as one travels away from a hotspot are called ______.

Answer 15

Nematath

Question 16

Large volcanoes on the seafloor that are cone-shaped on top because they never reached sea level are called _______.

Answer 16

Seamounts

Question 17

What is an example of the continental-continental divergent plate boundary?

Answer 17

East Africa Rift Valley, REd Sea, Gulf of California

Question 18

What is an example of an oceanic-oceanic convergent plate boundary?

Answer 18

Mariana Trench, Aleutian Islands

Question 19

What is an example of an oceanic-continental convergent plate boundary?

Answer 19

Andes mountains

Question 20

Coral reefs that initially develop along the margin of an island or continent where environmental conditions are suitable are called _________.

Answer 20

Fringing reefs

Question 21

In general, where can the youngest ocean floor be found?

Answer 21

At the mid-ocean ridge

Question 22

Plate boundaries where new oceanic crust is being added are called _____.

Answer 22

Divergent boundaries

Question 23

Your job is to locate the world’s plate boundaries. To do this, you may use only one map. The best map to choose for this job is a map that shows the worldwide locations of _____.

Answer 23

Earthquakes

Question 24

An ocean trench is associated with what type of plate boundary?

Answer 24

Convergent

Question 25

What happens when an oceanic and a continental plate converge?

Answer 25

The oceanic plate will be subducted

Question 26

How is it that the ocean floor is so much younger than the ocean itself?

Answer 26

The ocean floor keeps regenerating itself

Question 27

The San Andreas Fault is associated with what type of plate boundary?

Answer 27

Transform

Question 28

Where would you NOT expect to find significant volcanic activity?

Answer 28

Continental collision zone