Question 1

What is the asthenosphere?

Accepted Answer

A) It is the surface that separates the crust from the mantle. 
B) It is the zone that separates the continental crust from the oceanic crust. 
C) It is in the surface that separates the inner and outer core. 
D) It is the zone of weakness in the mantle on which the lithosphere moves. 
E) It is the same as the Gutenberg Discontinuity. 
A) It is the surface that separates the crust from the mantle. 
B) It is the zone that separates the continental crust from the oceanic crust. 
C) It is in the surface that separates the inner and outer core. 
D) It is the zone of weakness in the mantle on which the lithosphere moves. 
E) It is the same as the Gutenberg Discontinuity. D

Question 2

Iron-nickel meteorites are an important source of information regarding the composition of Earth's ______.

Accepted Answer

A) oceanic crust 
B) core 
C) mantle 
D) asthenosphere 
E) continental crust 
A) oceanic crust 
B) core 
C) mantle 
D) asthenosphere 
E) continental crust B

Question 3

Seismic waves travel faster in oceanic crust than in continental crust.

Accepted Answer

A) True 
 B)False  True

Question 4

Because _____ can be accurately calculated,the size and shape of the core can be determined.

Accepted Answer

A) P-wave paths 
B) surface wave paths 
C) gravitational anomalies 
D) heat flow conditions 
E) magnetic anomalies 
A) P-wave paths 
B) surface wave paths 
C) gravitational anomalies 
D) heat flow conditions 
E) magnetic anomalies

Question 5

The rise of the crust after removal of ice is called ____.

Accepted Answer

A) crustal rebound 
B) tectonic uplift 
C) upheaval 
D) subduction 
E) dynamic adjustment 
A) crustal rebound 
B) tectonic uplift 
C) upheaval 
D) subduction 
E) dynamic adjustment

Question 6

Oceanic crust is _____ continental crust.

Accepted Answer

A) thinner than 
B) thicker than 
C) the same thickness as 
D) the same composition as 
E) the same seismic velocity as 
A) thinner than 
B) thicker than 
C) the same thickness as 
D) the same composition as 
E) the same seismic velocity as

Question 7

Generally,seismic wave velocity decreases with depth.

Accepted Answer

A) True 
 B)False

Question 8

_____ is a circulation pattern in which low-density material rises and high-density material sinks.

Accepted Answer

A) Conduction 
B) Convection 
C) Density flow 
D) Refraction 
E) Reflection 
A) Conduction 
B) Convection 
C) Density flow 
D) Refraction 
E) Reflection

Question 9

Heat flow ______ the crest of the mid-oceanic ridges.

Accepted Answer

A) increases away from 
B) decreases away from 
C) does not change relative to 
D) is unknown on 
E) is the highest on Earth on 
A) increases away from 
B) decreases away from 
C) does not change relative to 
D) is unknown on 
E) is the highest on Earth on

Question 10

The way that P-waves are refracted within the core suggests that there is a solid inner core.

Accepted Answer

A) True 
 B)False

Question 11

___ indicates that the core of the Earth is a liquid.

Accepted Answer

A) Density calculations 
B) Studies of meteorites 
C) The P-wave shadow zone 
D) The S-wave shadow zone 
E) The Earth's heat flow 
A) Density calculations 
B) Studies of meteorites 
C) The P-wave shadow zone 
D) The S-wave shadow zone 
E) The Earth's heat flow

Question 12

Most of the evidence for magnetic reversals comes from lava flows on the continents.

Accepted Answer

A) True 
 B)False

Question 13

The asthenosphere may be a partially melted crystal and liquid slush.

Accepted Answer

A) True 
 B)False

Question 14

The study of ancient magnetic fields is called ____.

Accepted Answer

A) paleontology 
B) old magnetism 
C) Curie point 
D) paleomagnetism 
E) magnetic polarities 
A) paleontology 
B) old magnetism 
C) Curie point 
D) paleomagnetism 
E) magnetic polarities

Question 15

The average heat flow of the continents is the same as the average heat flow of the sea floor.

Accepted Answer

A) True 
 B)False

Question 16

_____ is the return of some of the energy of a seismic wave to the Earth's surface after it bounces off a rock boundary.

Accepted Answer

A) Seismic reflection 
B) Seismic refraction 
C) Seismic attenuation 
D) Seismic adjustment 
E) Seismic shadow zone 
A) Seismic reflection 
B) Seismic refraction 
C) Seismic attenuation 
D) Seismic adjustment 
E) Seismic shadow zone

Question 17

_______ is a balance or equilibrium of adjacent blocks of brittle crust floating on the upper mantle.

Accepted Answer

A) Density adjustment 
B) Isostasy 
C) Gravity adjustment 
D) Inertial adjustment 
E) Thermohaline flow 
A) Density adjustment 
B) Isostasy 
C) Gravity adjustment 
D) Inertial adjustment 
E) Thermohaline flow

Question 18

At a pressure equivalent to a depth of 670 km the mineral olivine collapses to form ____.

Accepted Answer

A) perovskite 
B) quartz 
C) mica 
D) calcite 
E) zircon 
A) perovskite 
B) quartz 
C) mica 
D) calcite 
E) zircon

Question 19

A ____ is a tool used to study the gravitational attraction between Earth and a mass within the instrument.

Accepted Answer

A) seismic reflection study 
B) sonograph 
C) gravitation recorder 
D) seismograph 
E) gravity meter 
A) seismic reflection study 
B) sonograph 
C) gravitation recorder 
D) seismograph 
E) gravity meter

Question 20

The concept of isostatic adjustment implies that all mountains extend to the same depth in the mantle.

Accepted Answer

A) True 
 B)False

Exam 2: Earths Interior and Geophysical Properties

What is the asthenosphere?

Iron-nickel meteorites are an important source of information regarding the composition of Earth's ______.

Seismic waves travel faster in oceanic crust than in continental crust.

Because _____ can be accurately calculated,the size and shape of the core can be determined.

The rise of the crust after removal of ice is called ____.

Oceanic crust is _____ continental crust.

Generally,seismic wave velocity decreases with depth.

_____ is a circulation pattern in which low-density material rises and high-density material sinks.

Heat flow ______ the crest of the mid-oceanic ridges.

The way that P-waves are refracted within the core suggests that there is a solid inner core.

___ indicates that the core of the Earth is a liquid.

Most of the evidence for magnetic reversals comes from lava flows on the continents.

The asthenosphere may be a partially melted crystal and liquid slush.

The study of ancient magnetic fields is called ____.

The average heat flow of the continents is the same as the average heat flow of the sea floor.

_____ is the return of some of the energy of a seismic wave to the Earth's surface after it bounces off a rock boundary.

_______ is a balance or equilibrium of adjacent blocks of brittle crust floating on the upper mantle.

At a pressure equivalent to a depth of 670 km the mineral olivine collapses to form ____.

A ____ is a tool used to study the gravitational attraction between Earth and a mass within the instrument.

The concept of isostatic adjustment implies that all mountains extend to the same depth in the mantle.

Introducing Geology,the Essentials of Plate Tectonics,and Other Important Concepts

The Sea Floor

Plate Tectonics

Mountain Belts and the Continental Crust

Geologic Structures

Earthquakes

Time and Geology

Atoms,Elements and Minerals

Volcanism and Extrusive Rocks

Igneous Rocks, Intrusive Activity, and the Origin of Igneous Rocks

Weathering and Soil

Mass Wasting

Sediment and Sedimentary Rocks

Metamorphism, Metamorphic Rocks, and Hydrothermal Rocks

Streams and Floods

Ground Water

Deserts and Wind Action

Glaciers and Glaciation

Waves,Beaches and Coasts

Geologic Resources

The Earths Companions

Filters