Question 1

The high risk of a mega-quake (mag 8.5 - 9.0)in Vancouver,British Columbia is due to what type of movement,relative to the North American Plate?

Accepted Answer

A)  the subduction of the Juan de Fuca Plate 
B)  the spreading of the Pacific Plate 
C)  the subduction of the Pacific Plate 
D)  Movement along the San Andreas Fault 
E)  collision with the Pacific Plate 
A)  the subduction of the Juan de Fuca Plate 
B)  the spreading of the Pacific Plate 
C)  the subduction of the Pacific Plate 
D)  Movement along the San Andreas Fault 
E)  collision with the Pacific Plate

Question 2

Volcanic eruptions along the west coast of North America are due to

Accepted Answer

A)  hotspot plume activity in the mantle. 
B)  divergent plate boundaries resulting in a spreading ridge. 
C)  collision zones that result in mountain building. 
D)  convergent plate boundaries where subduction occurs and generates melts. 
E)  transform plate boundary where plates slide past one another. 
A)  hotspot plume activity in the mantle. 
B)  divergent plate boundaries resulting in a spreading ridge. 
C)  collision zones that result in mountain building. 
D)  convergent plate boundaries where subduction occurs and generates melts. 
E)  transform plate boundary where plates slide past one another.

Question 3

Explain the importance of paleomagnetism in understanding plate tectonics.

Accepted Answer

Paleomagnetism is important in understan

Question 4

The Mohorovicic discontinuity separates rocks of the lithosphere from the asthenosphere.

Accepted Answer

A) True 
 B)False

Question 5

The Mohorovicic discontinuity,or Moho,is the boundary that marks density contrast between which two layers of the Earth's interior?

Accepted Answer

A)  the mantle and outer core 
B)  the Asthenosphere and mantle 
C)  the lithosphere and mantle 
D)  the mantle and crust 
E)  the inner core and outer core 
A)  the mantle and outer core 
B)  the Asthenosphere and mantle 
C)  the lithosphere and mantle 
D)  the mantle and crust 
E)  the inner core and outer core

Question 6

Divergent plate boundaries occur on remote seafloor spreading ridges and do not present any hazards for populated areas.

Accepted Answer

A) True 
 B)False

Question 7

Tectonic plates are defined by the location of continents and oceans.

Accepted Answer

A) True 
 B)False

Question 8

The cool,strong,outermost layer of the solid Earth is referred to as the lithosphere.

Accepted Answer

A) True 
 B)False

Question 9

Plates are constantly in motion and moving very quickly.

Accepted Answer

A) True 
 B)False

Question 10

Describe the mechanisms of ridge push and slab pull and explain which one is the more important process in driving plate tectonics.

Accepted Answer

Ridge push and slab pull are two mechani

Question 11

Continent-continent collisions are responsible for all mountain building events on Earth.

Accepted Answer

A) True 
 B)False

Question 12

Mantle "hotspots" underlie

Accepted Answer

A)  Mount St. Helens and Mount Lassen. 
B)  the San Andreas Fault and Mount Lassen. 
C)  Yellowstone and Mauna Loa. 
D)  the Cascadia subduction zone. 
E)  Yellowstone and Mount St. Helens. 
A)  Mount St. Helens and Mount Lassen. 
B)  the San Andreas Fault and Mount Lassen. 
C)  Yellowstone and Mauna Loa. 
D)  the Cascadia subduction zone. 
E)  Yellowstone and Mount St. Helens.

Question 13

Most of the world's earthquakes and volcanoes occur at or near plate boundaries.

Accepted Answer

A) True 
 B)False

Question 14

The asthenosphere layer of the Earth is liquid.

Accepted Answer

A) True 
 B)False

Question 15

The lithosphere is the rigid outer layer of solid Earth,which includes

Accepted Answer

A)  the crust plus the entire mantle. 
B)  only the oceanic crust. 
C)  the crust plus the uppermost mantle. 
D)  the crust plus the asthenosphere. 
E)  both the continental crust and the oceanic crust. 
A)  the crust plus the entire mantle. 
B)  only the oceanic crust. 
C)  the crust plus the uppermost mantle. 
D)  the crust plus the asthenosphere. 
E)  both the continental crust and the oceanic crust.

Question 16

What phenomenon of the ocean crust led scientists to propose the idea of sea-floor spreading?

Accepted Answer

A)  volcanoes in Japan 
B)  symmetrically magnetized stripes of rock on the ocean floor 
C)  earthquakes in the middle of the ocean 
D)  mountain chains around the Pacific Ocean 
E)  the San Andreas fault 
A)  volcanoes in Japan 
B)  symmetrically magnetized stripes of rock on the ocean floor 
C)  earthquakes in the middle of the ocean 
D)  mountain chains around the Pacific Ocean 
E)  the San Andreas fault

Question 17

Explain how the seafloor expands and then explain why the Earth does not get any bigger or smaller.

Accepted Answer

The seafloor expands through a process c

Question 18

If you wanted to draw the boundaries of plates on a globe,which of the following maps would give you the most complete information?

Accepted Answer

A)  map of active volcanoes 
B)  map of mid-ocean ridges 
C)  map of earthquake distribution 
D)  map of the edge of continental shelves 
E)  map of hotspots 
A)  map of active volcanoes 
B)  map of mid-ocean ridges 
C)  map of earthquake distribution 
D)  map of the edge of continental shelves 
E)  map of hotspots

Question 19

The ocean crust of the Earth is older than the continents.

Accepted Answer

A) True 
 B)False

Question 20

Oceanic Plates migrate and move at a rate of ________ per year.

Accepted Answer

A)  one metre 
B)  several metres 
C)  almost insignificant amounts 
D)  only a few millimetres 
E)  several centimetres 
A)  one metre 
B)  several metres 
C)  almost insignificant amounts 
D)  only a few millimetres 
E)  several centimetres

The high risk of a mega-quake (mag 8.5 - 9.0)in Vancouver,British Columbia is due to what type of movement,relative to the North American Plate?

Volcanic eruptions along the west coast of North America are due to

Explain the importance of paleomagnetism in understanding plate tectonics.

The Mohorovicic discontinuity separates rocks of the lithosphere from the asthenosphere.

The Mohorovicic discontinuity,or Moho,is the boundary that marks density contrast between which two layers of the Earth's interior?

Divergent plate boundaries occur on remote seafloor spreading ridges and do not present any hazards for populated areas.

Tectonic plates are defined by the location of continents and oceans.

The cool,strong,outermost layer of the solid Earth is referred to as the lithosphere.

Plates are constantly in motion and moving very quickly.

Describe the mechanisms of ridge push and slab pull and explain which one is the more important process in driving plate tectonics.

Continent-continent collisions are responsible for all mountain building events on Earth.

Mantle "hotspots" underlie

Most of the world's earthquakes and volcanoes occur at or near plate boundaries.

The asthenosphere layer of the Earth is liquid.

The lithosphere is the rigid outer layer of solid Earth,which includes

What phenomenon of the ocean crust led scientists to propose the idea of sea-floor spreading?

Explain how the seafloor expands and then explain why the Earth does not get any bigger or smaller.

If you wanted to draw the boundaries of plates on a globe,which of the following maps would give you the most complete information?

The ocean crust of the Earth is older than the continents.

Oceanic Plates migrate and move at a rate of ________ per year.

Introduction to Natural Hazards

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters

Exam 2: Internal Structure of Earth and Plate Tectonics

The high risk of a mega-quake (mag 8.5 - 9.0)in Vancouver,British Columbia is due to what type of movement,relative to the North American Plate?

Volcanic eruptions along the west coast of North America are due to

Explain the importance of paleomagnetism in understanding plate tectonics.

The Mohorovicic discontinuity separates rocks of the lithosphere from the asthenosphere.

The Mohorovicic discontinuity,or Moho,is the boundary that marks density contrast between which two layers of the Earth's interior?

Divergent plate boundaries occur on remote seafloor spreading ridges and do not present any hazards for populated areas.

Tectonic plates are defined by the location of continents and oceans.

The cool,strong,outermost layer of the solid Earth is referred to as the lithosphere.

Plates are constantly in motion and moving very quickly.

Describe the mechanisms of ridge push and slab pull and explain which one is the more important process in driving plate tectonics.

Continent-continent collisions are responsible for all mountain building events on Earth.

Mantle "hotspots" underlie

Most of the world's earthquakes and volcanoes occur at or near plate boundaries.

The asthenosphere layer of the Earth is liquid.

The lithosphere is the rigid outer layer of solid Earth,which includes

What phenomenon of the ocean crust led scientists to propose the idea of sea-floor spreading?

Explain how the seafloor expands and then explain why the Earth does not get any bigger or smaller.

If you wanted to draw the boundaries of plates on a globe,which of the following maps would give you the most complete information?

The ocean crust of the Earth is older than the continents.

Oceanic Plates migrate and move at a rate of ________ per year.

Introduction to Natural Hazards

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters