Question 1

After the demise of the dinosaurs,mammals evolved and became the top of the food chain.

Accepted Answer

A) True 
 B)False

Question 2

What do asteroids consist of?

Accepted Answer

Rock,metal

Question 3

All meteorites have similar chemical and mineralogical compositions.

Accepted Answer

A) True 
 B)False

Question 4

Describe the principle of uniformitarianism.

Accepted Answer

Geologic features on Earth wer

Question 5

The Kuiper belt

Accepted Answer

A)  is located in the inner solar system. 
B)  occurs between Jupiter and Uranus. 
C)  is where some comets occur. 
D)  is where most meteors originate. 
E)  is where most asteroids originate. 
A)  is located in the inner solar system. 
B)  occurs between Jupiter and Uranus. 
C)  is where some comets occur. 
D)  is where most meteors originate. 
E)  is where most asteroids originate.

Question 6

The largest recorded mass extinction occurred at the K-T boundary and it involved the dinosaurs.

Accepted Answer

A) True 
 B)False

Question 7

If an impact of the size of the one associated with the K-T boundary occurred tomorrow,it would likely end life as we know it.

Accepted Answer

A) True 
 B)False

Question 8

The impact that created the Sudbury Basin 1.85 million years ago

Accepted Answer

A)  was created by an asteroid impact. 
B)  was responsible for the extinction of the dinosaurs. 
C)  created a large, deep crater that is now a lake. 
D)  created the world's richest nickel-copper mining district. 
E)  created a crater that extended to Minnesota. 
A)  was created by an asteroid impact. 
B)  was responsible for the extinction of the dinosaurs. 
C)  created a large, deep crater that is now a lake. 
D)  created the world's richest nickel-copper mining district. 
E)  created a crater that extended to Minnesota.

Question 9

Which of the following describes a meteorite?

Accepted Answer

A)  large diameter (10m-1000km) object originating from belt between Jupiter and Mars 
B)  moderate diameter (<10m) object originating from collisions of asteroids 
C)  small diameter (<10 cm) object destroyed in Earth's atmosphere 
D)  variable-sized object that intersects the Earth's surface 
E)  icy object that appears to have a tail as it burns, originates from outside our solar system 
A)  large diameter (10m-1000km) object originating from belt between Jupiter and Mars 
B)  moderate diameter (<10m) object originating from collisions of asteroids 
C)  small diameter (<10 cm) object destroyed in Earth's atmosphere 
D)  variable-sized object that intersects the Earth's surface 
E)  icy object that appears to have a tail as it burns, originates from outside our solar system

Question 10

What is the "Big Bang"?

Accepted Answer

The explosion that p

Question 11

List two typical pieces of geologic evidence that are produced by a meteorite impact.

Accepted Answer

Impact breccia,shock

Question 12

Why are old impact craters often difficult to identify?

Accepted Answer

Because they been ex

Question 13

How could you tell the difference between an impact crater and a volcano?

Accepted Answer

High pressure metamorphism (e.

Question 14

What distinguishes a complex impact crater from a simple impact crater?

Accepted Answer

A complex crater is

Question 15

Bombardment of the Earth by asteroids and comets early in its history

Accepted Answer

A)  led to the extinction of the dinosaurs. 
B)  contributed to the growth of the planet. 
C)  caused the Earth to stop growing. 
D)  pushed the Earth out of its orbit. 
E)  created the atmosphere. 
A)  led to the extinction of the dinosaurs. 
B)  contributed to the growth of the planet. 
C)  caused the Earth to stop growing. 
D)  pushed the Earth out of its orbit. 
E)  created the atmosphere.

Question 16

Why did scientists FIRST hypothesize that a meteorite impact caused the extinction at the K-T boundary?

Accepted Answer

A)  They found evidence of a giant tsunami on the Gulf coast. 
B)  They found evidence of an impact crater in Mexico. 
C)  They found evidence of wildfires in many regions throughout the globe. 
D)  They found evidence of iridium enrichments in a clay layer that led them to believe that the iridium was the remains of a meteorite impact. 
E)  They found evidence of acid rain in the rocks in the Southern Hemisphere. 
A)  They found evidence of a giant tsunami on the Gulf coast. 
B)  They found evidence of an impact crater in Mexico. 
C)  They found evidence of wildfires in many regions throughout the globe. 
D)  They found evidence of iridium enrichments in a clay layer that led them to believe that the iridium was the remains of a meteorite impact. 
E)  They found evidence of acid rain in the rocks in the Southern Hemisphere.

Question 17

The Tunguska event was

Accepted Answer

A)  an impact. 
B)  created by a comet. 
C)  an airburst. 
D)  the largest impact in Earth history. 
E)  created by a meteorite. 
A)  an impact. 
B)  created by a comet. 
C)  an airburst. 
D)  the largest impact in Earth history. 
E)  created by a meteorite.

Question 18

The K-T boundary refers to

Accepted Answer

A)  the boundary between ejecta and the crater floor. 
B)  the boundary at the abrupt onset on the Younger drays cold episode. 
C)  a mass extinction event caused by volcanic activity. 
D)  a mass extinction event caused by a change in plate movements. 
E)  an extinction that coincides with the end of the Cretaceous Period. 
A)  the boundary between ejecta and the crater floor. 
B)  the boundary at the abrupt onset on the Younger drays cold episode. 
C)  a mass extinction event caused by volcanic activity. 
D)  a mass extinction event caused by a change in plate movements. 
E)  an extinction that coincides with the end of the Cretaceous Period.

Question 19

If we identified a large object on a collision course with Earth,what would be the best approach to minimize the hazard,given today's technology?

Accepted Answer

A)  Evacuate the area where the object is expected to hit. 
B)  Blow the object apart with nuclear weapons before it impacts Earth. 
C)  Blow the object apart with conventional weapons before it impacts Earth. 
D)  Attempt to deflect the object onto a different orbital path. 
E)  Do nothing, since we have no appropriate technology at this time. 
A)  Evacuate the area where the object is expected to hit. 
B)  Blow the object apart with nuclear weapons before it impacts Earth. 
C)  Blow the object apart with conventional weapons before it impacts Earth. 
D)  Attempt to deflect the object onto a different orbital path. 
E)  Do nothing, since we have no appropriate technology at this time.

Question 20

What is the K-T mass extinction?

Accepted Answer

It occurred at the end of the

After the demise of the dinosaurs,mammals evolved and became the top of the food chain.

What do asteroids consist of?

All meteorites have similar chemical and mineralogical compositions.

Describe the principle of uniformitarianism.

The Kuiper belt

The largest recorded mass extinction occurred at the K-T boundary and it involved the dinosaurs.

If an impact of the size of the one associated with the K-T boundary occurred tomorrow,it would likely end life as we know it.

The impact that created the Sudbury Basin 1.85 million years ago

Which of the following describes a meteorite?

What is the "Big Bang"?

List two typical pieces of geologic evidence that are produced by a meteorite impact.

Why are old impact craters often difficult to identify?

How could you tell the difference between an impact crater and a volcano?

What distinguishes a complex impact crater from a simple impact crater?

Bombardment of the Earth by asteroids and comets early in its history

Why did scientists FIRST hypothesize that a meteorite impact caused the extinction at the K-T boundary?

The Tunguska event was

The K-T boundary refers to

If we identified a large object on a collision course with Earth,what would be the best approach to minimize the hazard,given today's technology?

What is the K-T mass extinction?

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

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

Filters

Exam 15: Meteorite Impacts and Extinctions

After the demise of the dinosaurs,mammals evolved and became the top of the food chain.

What do asteroids consist of?

All meteorites have similar chemical and mineralogical compositions.

Describe the principle of uniformitarianism.

The Kuiper belt

The largest recorded mass extinction occurred at the K-T boundary and it involved the dinosaurs.

If an impact of the size of the one associated with the K-T boundary occurred tomorrow,it would likely end life as we know it.

The impact that created the Sudbury Basin 1.85 million years ago

Which of the following describes a meteorite?

What is the "Big Bang"?

List two typical pieces of geologic evidence that are produced by a meteorite impact.

Why are old impact craters often difficult to identify?

How could you tell the difference between an impact crater and a volcano?

What distinguishes a complex impact crater from a simple impact crater?

Bombardment of the Earth by asteroids and comets early in its history

Why did scientists FIRST hypothesize that a meteorite impact caused the extinction at the K-T boundary?

The Tunguska event was

The K-T boundary refers to

If we identified a large object on a collision course with Earth,what would be the best approach to minimize the hazard,given today's technology?

What is the K-T mass extinction?

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

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

Filters