Exam 14: Impacts and Extinctions

There is actually a high risk from an asteroid impact. Explain why this is. Next, since the risk is so high, what kind of public awareness of asteroid impact should there be? Describe the measures that should be taken to increase public awareness or explain why it would not be necessary.

(Essay)

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Question 41

Explain why one needs to know about the formation of the solar system in order to understand asteroids.

(Essay)

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Question 42

Comets are dust-sized objects that completely vaporize upon entering the Earth's atmosphere.

(True/False)

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Question 43

Impact craters on the Earth are hard to find because they can be buried on the ocean floor or by sediment.

(True/False)

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Question 44

How are particles in the solar system classified by scientists?

(Multiple Choice)

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Question 45

What is the significance of the rock Breccia in an impact crater?

(Multiple Choice)

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Question 46

The Younger Dryas represents a time of an unusual combination of abrupt glacial melting followed by climatic cooling that has been explained by an extraterrestrial impact.

(True/False)

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Question 47

Approximately how old is the Sun?

(Multiple Choice)

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Question 48

Why didn't the Tunguska Event in Siberia in 1908 cause any deaths?

(Multiple Choice)

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Question 49

Massive stars have longer lives than smaller ones do.

(True/False)

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Question 50

Extinctions of species is fairly uncommon in the Earth's history because extinctions tend to be caused by humans.

(True/False)

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Question 51

Why do particles like meteors and comets glow in the evening sky?

(Multiple Choice)

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Question 52

What is the significance of the Tunguska River Valley in Siberia in terms of asteroids?

(Multiple Choice)

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Question 53

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

(True/False)

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Question 54

The dinosaurs became extinct because of an ice age that changed their habitat.

(True/False)

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Question 55

The Big Bang occurred about 4.6 billion years ago.

(True/False)

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Question 56

Scientists hypothesized that the Mass Extinction at the K-Pg boundary was due to an asteroid impact by looking at the rock record without actually finding an impact crater.

(True/False)

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Question 57

An asteroid impact is a direct cause for a number of other natural hazards, including tsunamis, wildfires, earthquakes, mass wasting, climate change, and, possibly, volcanic eruptions.

(True/False)

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Question 58

Which of the following will NOT cause mass extinctions?

(Multiple Choice)

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Question 59

A mass extinction is characterized by the sudden loss of large numbers of plants and animals relative to the number of new species being added.

(True/False)

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Question 60

Showing 41 - 60 of 70

There is actually a high risk from an asteroid impact. Explain why this is. Next, since the risk is so high, what kind of public awareness of asteroid impact should there be? Describe the measures that should be taken to increase public awareness or explain why it would not be necessary.

Explain why one needs to know about the formation of the solar system in order to understand asteroids.

Comets are dust-sized objects that completely vaporize upon entering the Earth's atmosphere.

Impact craters on the Earth are hard to find because they can be buried on the ocean floor or by sediment.

How are particles in the solar system classified by scientists?

What is the significance of the rock Breccia in an impact crater?

The Younger Dryas represents a time of an unusual combination of abrupt glacial melting followed by climatic cooling that has been explained by an extraterrestrial impact.

Approximately how old is the Sun?

Why didn't the Tunguska Event in Siberia in 1908 cause any deaths?

Massive stars have longer lives than smaller ones do.

Extinctions of species is fairly uncommon in the Earth's history because extinctions tend to be caused by humans.

Why do particles like meteors and comets glow in the evening sky?

What is the significance of the Tunguska River Valley in Siberia in terms of asteroids?

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

The dinosaurs became extinct because of an ice age that changed their habitat.

The Big Bang occurred about 4.6 billion years ago.

Scientists hypothesized that the Mass Extinction at the K-Pg boundary was due to an asteroid impact by looking at the rock record without actually finding an impact crater.

An asteroid impact is a direct cause for a number of other natural hazards, including tsunamis, wildfires, earthquakes, mass wasting, climate change, and, possibly, volcanic eruptions.

Which of the following will NOT cause mass extinctions?

A mass extinction is characterized by the sudden loss of large numbers of plants and animals relative to the number of new species being added.

Introduction to Natural Hazards

Internal Structure of the Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes

Flooding

Mass Wasting

Subsidence and Soils

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Coastal Hazards

Climate and Climate Change

Wildfires

Filters