Earth Science Unit 2 Review

Question 1

Tsunamis result from earthquakes with epicenters located:

Accepted Answer

On the ocean floor

Question 2

Deep-focus earthquakes usually occur in areas in which one tectonic plate:

Accepted Answer

Subducts under another

Question 3

What geological discovery gave scientific evidence to verify of continental drift?

Accepted Answer

Reversed magnetic polarity on land & ocean floors

Question 4

What type of lava usually flows out of oceanic volcanoes?

Accepted Answer

Mafic

Question 5

The force that can change the size and shape of rocks is called:

Accepted Answer

Stress

Question 6

Paleomagnetism of the ocean floor is used to identify the:

Accepted Answer

Time of rock cooling and hardening

Question 7

What does the Mercalli scale describe?

Accepted Answer

Intensity of an earthquake

Question 8

Rising of the crust would most likely be caused by the crust being:

Accepted Answer

Compressed

Question 9

As rock moves away from a mid-ocean range it is replaced by:

Accepted Answer

Molten rock

Question 10

Where are earthquakes most likely to occur?

Accepted Answer

Near active faults

Question 11

The place where slippage first occurs is called an earthquake’s:

Accepted Answer

Focus

Question 12

Which of the following is the major cause of deformation of the earth’s crust?

Accepted Answer

Plate tectonics

Question 13

A string of volcanoes that forms along a trench is called:

Accepted Answer

An island arc

Question 14

Where in the Earth do convection currents occur?

Accepted Answer

The asthenosphere

Question 15

The theory that Mars may still be volcanically active is based on evidence of:

Accepted Answer

Seismic activity

Question 16

Most magma forms in:

Accepted Answer

The asthenosphere

Question 17

What of the following was used as evidence for the theory of continental drift?

Accepted Answer

Similarity in continental margins

Question 18

Rocks deeper in the crust are less likely break than rocks close to the surface because of

Accepted Answer

Higher temperatures

Question 19

Seafloor spreading occurs at:

Accepted Answer

Divergent boundaries

Question 20

The theory of plate tectonics is most directly based on which of the following interactions?

Accepted Answer

Lithospheric plates riding on asthenosphere

Question 21

Which of the following is sometimes used to predict earthquakes?

Accepted Answer

Magnitudes of past earthquakes

Question 22

Which of the following may result from the collision of one plate with another?

Accepted Answer

Convergent boundary

Question 23

What is formed when a magma chamber empties and collapses?

Accepted Answer

Caldera

Question 24

Cinder cones are generally formed when volcanoes eject:

Accepted Answer

Solid fragments

Question 25

The earth’s layer of solid rock that flows under pressure is called the:

Accepted Answer

Asthenosphere

Question 26

A collision between a continental plate and an oceanic plate is most likely to produce:

Accepted Answer

Mountain ranges

Question 27

The transfer of heat through the movement of heated fluid material in the earth’s crust is:

Accepted Answer

Convection

Question 28

Pillow lava is most commonly found:

Accepted Answer

Mid-ocean ridges

Question 29

The theory of microplate terranes provides an explanation of how:

Accepted Answer

Continents expand

Question 30

What type of lava flow has been found on Earth’s moon?

Accepted Answer

Basaltic

Question 31

Pangaea is the term used to describe:

Accepted Answer

An ancient landmass

Question 32

The magnitude of an earthquake is a direct measure of:

Accepted Answer

Energy released

Question 33

Surface waves are especially destructive when traveling through:

Accepted Answer

Loose earth

Question 34

Knowledge of temp & pressure in the mantle is based on analysis of heat flow measurements and:

Accepted Answer

Seismic wave behavior

Question 35

Magma that erupts under water often forms rounded formations called:

Accepted Answer

Pillow lava

Question 36

An opening in the earth’s surface through which molten rock flows is called a:

Accepted Answer

Vent

Question 37

What evidence found Africa & S.America supports the theory that they were once joined?

Accepted Answer

Glacial Debris

Question 38

Great pressure in the asthenosphere keeps rock there mostly:

Accepted Answer

Solid

Question 39

What type of mountains are commonly located where continents have collided?

Accepted Answer

Folded

Question 40

Up and down motions of the crust are called:

Accepted Answer

Isostatic adjustments

Earth Science Unit 2 Review

Questions 40

Earth Science Unit 2 Review

Questions 40