Question 1

When an asteroid strikes a desert area what is the layer of debris that often surrounds the crater?

Accepted Answer

A)  Ejecta blanket 
B)  Pseudotacylite 
C)  Outward fallout 
D)  Metamorphism 
E)  Impacted fallout 
A)  Ejecta blanket 
B)  Pseudotacylite 
C)  Outward fallout 
D)  Metamorphism 
E)  Impacted fallout

Question 2

Which of the following describes an asteroid?

Accepted Answer

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

Question 3

There are more impact craters found on continents than in the oceans because asteroids are more likely to strike land.

Accepted Answer

A) True 
 B)False

Question 4

Craters formed by meteorites are unique from craters formed by other processes.

Accepted Answer

A) True 
 B)False

Question 5

Comet Shoemaker-Levy 9 collided with Jupiter in 1993.If a comet of similar size strikes Earth

Accepted Answer

A)  the resulting impact crater would be about the same size as Meteor Crater in Arizona. 
B)  the resulting impact crater would be about the size of Manicougan Crater in Quebec. 
C)  the resulting impact crater would be about the size of New York City. 
D)  the worst damage would probably be from a mega-tsunami, if it hits the ocean. 
E)  it would definitely cause a mass extinction on Earth. 
A)  the resulting impact crater would be about the same size as Meteor Crater in Arizona. 
B)  the resulting impact crater would be about the size of Manicougan Crater in Quebec. 
C)  the resulting impact crater would be about the size of New York City. 
D)  the worst damage would probably be from a mega-tsunami, if it hits the ocean. 
E)  it would definitely cause a mass extinction on Earth.

Question 6

The meteorite impact at the K-T boundary vaporized lots of sulphur-bearing limestone rocks.What was the effect on climate due to this vaporization?

Accepted Answer

A)  The vaporized rock blocked the sunlight, shutting down photosynthesis. 
B)  Sulphuric acid and subsequently acid rain was produced in the atmosphere. 
C)  The limestone rocks released large amounts of greenhouse gases. 
D)  The vaporized rock caused an "impact winter." 
E)  The vaporized rock formed clouds which blocked the sunlight. 
A)  The vaporized rock blocked the sunlight, shutting down photosynthesis. 
B)  Sulphuric acid and subsequently acid rain was produced in the atmosphere. 
C)  The limestone rocks released large amounts of greenhouse gases. 
D)  The vaporized rock caused an "impact winter." 
E)  The vaporized rock formed clouds which blocked the sunlight.

Question 7

Because most asteroids are structurally weak and would probably explode at high altitudes,they pose no threat to Earth.

Accepted Answer

A) True 
 B)False

Question 8

Explain how extremely large volcanic eruptions can change climate.

Accepted Answer

They produce huge volumes of f

Question 9

Which of the following statements is NOT a reason why meteorite impact craters are much more common on the Moon than on the Earth?

Accepted Answer

A)  Many impact craters on the Earth are buried by sediment over geologic time and so we don't see them. 
B)  Many impact craters on the Earth are destroyed by plate tectonic processes. 
C)  Smaller meteoroids and comets tend to burn up and disintegrate in the Earth's atmosphere before striking its surface. 
D)  The Earth's crust is very strong and so it is difficult for meteorite impact craters to form there. 
E)  The Earth's gravity is less than that of the moon's making impact much less likely. 
A)  Many impact craters on the Earth are buried by sediment over geologic time and so we don't see them. 
B)  Many impact craters on the Earth are destroyed by plate tectonic processes. 
C)  Smaller meteoroids and comets tend to burn up and disintegrate in the Earth's atmosphere before striking its surface. 
D)  The Earth's crust is very strong and so it is difficult for meteorite impact craters to form there. 
E)  The Earth's gravity is less than that of the moon's making impact much less likely.

Question 10

Earth is still growing.How is that possible?

Accepted Answer

Every time a meteori

Question 11

Airbursts are not really dangerous to life on the Earth's surface because they explode so high in the atmosphere.

Accepted Answer

A) True 
 B)False

Question 12

The Chelyabinsk Meteor in 2013 in Russia caused over 300 deaths,making it the deadliest airburst ever.

Accepted Answer

A) True 
 B)False

Question 13

How are particles in the solar system classified by scientists?

Accepted Answer

A)  based on diameter and temperature 
B)  based on speed of entry and mass 
C)  based on diameter and speed of entry 
D)  based on composition and diameter 
E)  based on mass and composition 
A)  based on diameter and temperature 
B)  based on speed of entry and mass 
C)  based on diameter and speed of entry 
D)  based on composition and diameter 
E)  based on mass and composition

Question 14

Describe the concept of punctuated uniformitarianism.

Accepted Answer

Geologic features on Earth wer

Question 15

Approximately how old is the sun?

Accepted Answer

A)  14 billion years old 
B)  14 million years old 
C)  5 billion years old 
D)  5 million years old 
E)  5 thousand years old 
A)  14 billion years old 
B)  14 million years old 
C)  5 billion years old 
D)  5 million years old 
E)  5 thousand years old

Question 16

Most hypotheses to explain mass extinctions involve

Accepted Answer

A)  extraterrestrial impacts. 
B)  movements of the Earth's lithospheric plates. 
C)  volcanic eruptions. 
D)  significant climate change. 
E)  huge volumes of flood basalts. 
A)  extraterrestrial impacts. 
B)  movements of the Earth's lithospheric plates. 
C)  volcanic eruptions. 
D)  significant climate change. 
E)  huge volumes of flood basalts.

Question 17

What is iridium?

Accepted Answer

It is a platinum-gro

Question 18

Approximately how old is the planet Earth?

Accepted Answer

A)  4.6 billion years old 
B)  4.6 million years old 
C)  14 million years old 
D)  5,000 years old 
E)  5,000,000 years old 
A)  4.6 billion years old 
B)  4.6 million years old 
C)  14 million years old 
D)  5,000 years old 
E)  5,000,000 years old

Question 19

What might cause an asteroid to leave the asteroid belt and head toward a collision with Earth?

Accepted Answer

Gravitational interactions wit

Question 20

Old craters are difficult to identify because

Accepted Answer

A)  there are so few of them. 
B)  most are located in the ocean. 
C)  they are generally very small. 
D)  they have been extensively eroded. 
E)  they look like volcanic craters. 
A)  there are so few of them. 
B)  most are located in the ocean. 
C)  they are generally very small. 
D)  they have been extensively eroded. 
E)  they look like volcanic craters.

When an asteroid strikes a desert area what is the layer of debris that often surrounds the crater?

Which of the following describes an asteroid?

There are more impact craters found on continents than in the oceans because asteroids are more likely to strike land.

Craters formed by meteorites are unique from craters formed by other processes.

Comet Shoemaker-Levy 9 collided with Jupiter in 1993.If a comet of similar size strikes Earth

The meteorite impact at the K-T boundary vaporized lots of sulphur-bearing limestone rocks.What was the effect on climate due to this vaporization?

Because most asteroids are structurally weak and would probably explode at high altitudes,they pose no threat to Earth.

Explain how extremely large volcanic eruptions can change climate.

Which of the following statements is NOT a reason why meteorite impact craters are much more common on the Moon than on the Earth?

Earth is still growing.How is that possible?

Airbursts are not really dangerous to life on the Earth's surface because they explode so high in the atmosphere.

The Chelyabinsk Meteor in 2013 in Russia caused over 300 deaths,making it the deadliest airburst ever.

How are particles in the solar system classified by scientists?

Describe the concept of punctuated uniformitarianism.

Approximately how old is the sun?

Most hypotheses to explain mass extinctions involve

What is iridium?

Approximately how old is the planet Earth?

What might cause an asteroid to leave the asteroid belt and head toward a collision with Earth?

Old craters are difficult to identify because

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

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Exam 15: Meteorite Impacts and Extinctions

When an asteroid strikes a desert area what is the layer of debris that often surrounds the crater?

Which of the following describes an asteroid?

There are more impact craters found on continents than in the oceans because asteroids are more likely to strike land.

Craters formed by meteorites are unique from craters formed by other processes.

Comet Shoemaker-Levy 9 collided with Jupiter in 1993.If a comet of similar size strikes Earth

The meteorite impact at the K-T boundary vaporized lots of sulphur-bearing limestone rocks.What was the effect on climate due to this vaporization?

Because most asteroids are structurally weak and would probably explode at high altitudes,they pose no threat to Earth.

Explain how extremely large volcanic eruptions can change climate.

Which of the following statements is NOT a reason why meteorite impact craters are much more common on the Moon than on the Earth?

Earth is still growing.How is that possible?

Airbursts are not really dangerous to life on the Earth's surface because they explode so high in the atmosphere.

The Chelyabinsk Meteor in 2013 in Russia caused over 300 deaths,making it the deadliest airburst ever.

How are particles in the solar system classified by scientists?

Describe the concept of punctuated uniformitarianism.

Approximately how old is the sun?

Most hypotheses to explain mass extinctions involve

What is iridium?

Approximately how old is the planet Earth?

What might cause an asteroid to leave the asteroid belt and head toward a collision with Earth?

Old craters are difficult to identify because

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