Question 1

At least 90% of Earth's magnetic field is generated by the

Accepted Answer

A) inner core. 
B) outer core. 
C) lower mantle. 
D) asthenosphere. 
E) Mohorovičić discontinuity. 
A) inner core. 
B) outer core. 
C) lower mantle. 
D) asthenosphere. 
E) Mohorovičić discontinuity.

Question 2

Present the main assumptions of uniformitarianism.

Accepted Answer

The present is the key to the past.Unifo

Question 3

The dominant elements in continental crust are

Accepted Answer

A) silica and aluminum. 
B) silica and magnesium. 
C) magnesium and aluminum. 
D) potassium and iron. 
E) calcium and iron 
A) silica and aluminum. 
B) silica and magnesium. 
C) magnesium and aluminum. 
D) potassium and iron. 
E) calcium and iron

Question 4

____is the coherent theory that describes the motion of the Earth's lithosphere and associated processes and results.

Accepted Answer

A) Plate tectonics 
B) Sea floor spreading 
C) Pangaea 
D) Metamorphism 
E) Contact metamorphism 
A) Plate tectonics 
B) Sea floor spreading 
C) Pangaea 
D) Metamorphism 
E) Contact metamorphism

Question 5

Earth's interior is layered because

Accepted Answer

A) centrifugal force separated out the materials based on weight as the Earth solidified. 
B) materials became sorted based on density as the Earth solidified. 
C) materials became sorted based on electromagnetic fields as the Earth solidified. 
D) the planet was formed due to successive bombardments of cosmic debris. 
E) successive subduction events at convergent plate boundaries forcing earthen materials downward. 
A) centrifugal force separated out the materials based on weight as the Earth solidified. 
B) materials became sorted based on density as the Earth solidified. 
C) materials became sorted based on electromagnetic fields as the Earth solidified. 
D) the planet was formed due to successive bombardments of cosmic debris. 
E) successive subduction events at convergent plate boundaries forcing earthen materials downward.

Question 6

The world's deep ocean trenches coincide with

Accepted Answer

A) subduction zones. 
B) mid-oceanic ridges. 
C) transform plate boundaries. 
D) divergent plate boundaries. 
E) areas of active orogeny. 
A) subduction zones. 
B) mid-oceanic ridges. 
C) transform plate boundaries. 
D) divergent plate boundaries. 
E) areas of active orogeny.

Question 7

The_____ is liquid and is responsible for producing Earth's magnetic field.

Accepted Answer

A) inner core 
B) outer core 
C) lower mantle 
D) asthenosphere 
E) Mohorovičić discontinuity 
A) inner core 
B) outer core 
C) lower mantle 
D) asthenosphere 
E) Mohorovičić discontinuity

Question 8

Which of the following is incorrectly matched?

Accepted Answer

A) plate tectonics - endogenic processes 
B) volcanism - endogenic processes 
C) radioactive decay heat - exogenic process 
D) weathering - exogenic process 
E) erosion - exogenic process 
A) plate tectonics - endogenic processes 
B) volcanism - endogenic processes 
C) radioactive decay heat - exogenic process 
D) weathering - exogenic process 
E) erosion - exogenic process

Question 9

Mid-ocean ridges occur where

Accepted Answer

A) plates are moving apart (diverging). 
B) plates are converging. 
C) plates are sliding past one another (transform boundaries). 
D) the geographic middle of an ocean basic occurs. 
E) at ocean-continent margins. 
A) plates are moving apart (diverging). 
B) plates are converging. 
C) plates are sliding past one another (transform boundaries). 
D) the geographic middle of an ocean basic occurs. 
E) at ocean-continent margins.

Question 10

Along____ ,new ocean floor is formed by upwelling flows of magma,whereas along____ ,old oceanic crust is destroyed.

Accepted Answer

A) subduction zones;mid-ocean ridges 
B) archipelagos;oceanic trenches 
C) mid-ocean ridges;subduction zones 
D) oceanic trenches;archipelagos 
E) seamounts;mid-ocean ridges 
A) subduction zones;mid-ocean ridges 
B) archipelagos;oceanic trenches 
C) mid-ocean ridges;subduction zones 
D) oceanic trenches;archipelagos 
E) seamounts;mid-ocean ridges

Question 11

Felsic igneous rocks,such as granite and rhyolite,

Accepted Answer

A) have dark coloration. 
B) are high in magnesium and iron content. 
C) have a high melting temperature. 
D) are high in silicate minerals. 
E) have a higher density than mafic igneous rocks. 
A) have dark coloration. 
B) are high in magnesium and iron content. 
C) have a high melting temperature. 
D) are high in silicate minerals. 
E) have a higher density than mafic igneous rocks.

Question 12

The temperature of Earth's interior

Accepted Answer

A) increases with depth so the hottest temperatures are found within Earth's core. 
B) decreases with depth so the hottest temperatures are found within Earth's crust. 
C) decreases in the crust,increases in the mantle,decreases in the outer core,and increases in the inner core. 
D) increases in the crust,decreases in the mantle,increases in the outer core,and decreases in the inner core. 
E) is variable throughout and dependent on the location of and distance from hot spots. 
A) increases with depth so the hottest temperatures are found within Earth's core. 
B) decreases with depth so the hottest temperatures are found within Earth's crust. 
C) decreases in the crust,increases in the mantle,decreases in the outer core,and increases in the inner core. 
D) increases in the crust,decreases in the mantle,increases in the outer core,and decreases in the inner core. 
E) is variable throughout and dependent on the location of and distance from hot spots.

Question 13

Which of the following is an exogenic process?

Accepted Answer

A) earthquakes 
B) volcanism 
C) flows of heat and materials in the mantle 
D) weathering 
E) radioactive decay 
A) earthquakes 
B) volcanism 
C) flows of heat and materials in the mantle 
D) weathering 
E) radioactive decay

Question 14

Which of the following statements about Earth's core is not correct?

Accepted Answer

A) It is composed primarily of iron. 
B) The inner core is believed to be liquid and the outer core solid. 
C) Scientists think the inner core formed before the outer core. 
D) A third of the Earth's entire mass,but only a sixth of its volume lies in its core. 
E) The inner core,despite being well above melting temperature,remains solid due to tremendous pressure of overlying materials. 
A) It is composed primarily of iron. 
B) The inner core is believed to be liquid and the outer core solid. 
C) Scientists think the inner core formed before the outer core. 
D) A third of the Earth's entire mass,but only a sixth of its volume lies in its core. 
E) The inner core,despite being well above melting temperature,remains solid due to tremendous pressure of overlying materials.

Question 15

Of the elements in the Earth's crust,_____ makes up the most of the Earth's crust by weight.

Accepted Answer

A) silicon (Si) 
B) aluminum (Al) 
C) oxygen (O) 
D) iron (Fe) 
E) calcium (Ca) 
A) silicon (Si) 
B) aluminum (Al) 
C) oxygen (O) 
D) iron (Fe) 
E) calcium (Ca)

Question 16

Areas of upwelling material from the mantle to form new seafloor occur along

Accepted Answer

A) divergent boundaries. 
B) continental-ocean margins. 
C) transform boundaries. 
D) convergent boundaries. 
E) near small islands. 
A) divergent boundaries. 
B) continental-ocean margins. 
C) transform boundaries. 
D) convergent boundaries. 
E) near small islands.

Question 17

What are some examples of anthropogenic endogenic and exogenic processes in the geologic cycle?

Accepted Answer

Answers will vary.For instance

Question 18

Which of the following can occur when seismic waves encounter a layer in Earth's interior?

Accepted Answer

A) reflection and/or refraction,only 
B) absorption,only 
C) change in speed,only 
D) reflection,refraction,absorption,and change in speed 
E) seismic waves cannot penetrate below the crust of Earth 
A) reflection and/or refraction,only 
B) absorption,only 
C) change in speed,only 
D) reflection,refraction,absorption,and change in speed 
E) seismic waves cannot penetrate below the crust of Earth

Question 19

Ocean floor subducts under continents because

Accepted Answer

A) the ocean floor has a lower density and therefore sinks more easily. 
B) the ocean floor is made of felsic minerals and is heavier than continental material. 
C) the ocean floor is made of mafic material and is therefore more dense than continental material. 
D) the weight of the continents is so great that they push the ocean floor material downward. 
E) granite is denser than basalt,forcing the basaltic ocean floors downward. 
A) the ocean floor has a lower density and therefore sinks more easily. 
B) the ocean floor is made of felsic minerals and is heavier than continental material. 
C) the ocean floor is made of mafic material and is therefore more dense than continental material. 
D) the weight of the continents is so great that they push the ocean floor material downward. 
E) granite is denser than basalt,forcing the basaltic ocean floors downward.

Question 20

Earth's magnetic poles

Accepted Answer

A) are fixed. 
B) are migrating approximately 60 km (37 mi. )per year. 
C) are perfectly aligned with Earth's axis. 
D) are misaligned from Earth's axis by 23.5 degrees. 
E) are no different than Earth's geographic poles. 
A) are fixed. 
B) are migrating approximately 60 km (37 mi. )per year. 
C) are perfectly aligned with Earth's axis. 
D) are misaligned from Earth's axis by 23.5 degrees. 
E) are no different than Earth's geographic poles.

At least 90% of Earth's magnetic field is generated by the

Present the main assumptions of uniformitarianism.

The dominant elements in continental crust are

____is the coherent theory that describes the motion of the Earth's lithosphere and associated processes and results.

Earth's interior is layered because

The world's deep ocean trenches coincide with

The_____ is liquid and is responsible for producing Earth's magnetic field.

Which of the following is incorrectly matched?

Mid-ocean ridges occur where

Along ,new ocean floor is formed by upwelling flows of magma,whereas along ,old oceanic crust is destroyed.

Felsic igneous rocks,such as granite and rhyolite,

The temperature of Earth's interior

Which of the following is an exogenic process?

Which of the following statements about Earth's core is not correct?

Of the elements in the Earth's crust,_____ makes up the most of the Earth's crust by weight.

Areas of upwelling material from the mantle to form new seafloor occur along

What are some examples of anthropogenic endogenic and exogenic processes in the geologic cycle?

Which of the following can occur when seismic waves encounter a layer in Earth's interior?

Ocean floor subducts under continents because

Earth's magnetic poles

Essentials of Geography

Solar Energy to Earth and the Seasons

Earth’s Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Earth’s Climatic Regions

Climate Change

Tectonics, Earthquakes, and Volcanism

Weathering, Karst Landscapes, and Mass Movement

River Systems

Aeolian Processes and Arid Landscapes

Oceans and Coastal Systems

Glacial Landscapes and the Cryosphere

The Geography of Soils

Ecosystem Essentials

Terrestrial Biomes

Filters

Exam 11: The Dynamic Planet

At least 90% of Earth's magnetic field is generated by the

Present the main assumptions of uniformitarianism.

The dominant elements in continental crust are

____is the coherent theory that describes the motion of the Earth's lithosphere and associated processes and results.

Earth's interior is layered because

The world's deep ocean trenches coincide with

The_____ is liquid and is responsible for producing Earth's magnetic field.

Which of the following is incorrectly matched?

Mid-ocean ridges occur where

Along____ ,new ocean floor is formed by upwelling flows of magma,whereas along____ ,old oceanic crust is destroyed.

Felsic igneous rocks,such as granite and rhyolite,

The temperature of Earth's interior

Which of the following is an exogenic process?

Which of the following statements about Earth's core is not correct?

Of the elements in the Earth's crust,_____ makes up the most of the Earth's crust by weight.

Areas of upwelling material from the mantle to form new seafloor occur along

What are some examples of anthropogenic endogenic and exogenic processes in the geologic cycle?

Which of the following can occur when seismic waves encounter a layer in Earth's interior?

Ocean floor subducts under continents because

Earth's magnetic poles

Essentials of Geography

Solar Energy to Earth and the Seasons

Earth’s Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Earth’s Climatic Regions

Climate Change

Tectonics, Earthquakes, and Volcanism

Weathering, Karst Landscapes, and Mass Movement

River Systems

Aeolian Processes and Arid Landscapes

Oceans and Coastal Systems

Glacial Landscapes and the Cryosphere

The Geography of Soils

Ecosystem Essentials

Terrestrial Biomes

Filters

Along ,new ocean floor is formed by upwelling flows of magma,whereas along ,old oceanic crust is destroyed.