Exam 17: Impacts With Space Objects

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Clusters of asteroids such as the Apollos have orbits that intersect Earth's orbit;there are more than a thousand mountain-sized Apollo asteroids that could hit the Earth.

(True/False)

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Question 41

The relative numbers of incoming objects are not related to their size.

(True/False)

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Question 42

Why are there so many more impact craters visible on the Moon than on the Earth?

(Multiple Choice)

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Question 43

Critical evidence for the Cretaceous-Tertiary boundary impact included _________________.

(Multiple Choice)

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Question 44

When a meteorite large enough to cause a crater hits the Earth,the size of the impact crater is ________________.

(Multiple Choice)

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Question 45

Large meteorite impacts occur more frequently than small impacts.

(True/False)

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Question 46

The numbers of incoming objects are related to their size:

(Multiple Choice)

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Question 47

Some asteroids are not solid bodies,but rather "rubble piles" held together by the mutual gravitational attraction of all the individual pieces.

(True/False)

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Question 48

Relatively few impact craters have been discovered on Earth because _______________.

(Multiple Choice)

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Question 49

Showing 41 - 49 of 49

Clusters of asteroids such as the Apollos have orbits that intersect Earth's orbit;there are more than a thousand mountain-sized Apollo asteroids that could hit the Earth.

The relative numbers of incoming objects are not related to their size.

Why are there so many more impact craters visible on the Moon than on the Earth?

Critical evidence for the Cretaceous-Tertiary boundary impact included _________________.

When a meteorite large enough to cause a crater hits the Earth,the size of the impact crater is ________________.

Large meteorite impacts occur more frequently than small impacts.

The numbers of incoming objects are related to their size:

Some asteroids are not solid bodies,but rather "rubble piles" held together by the mutual gravitational attraction of all the individual pieces.

Relatively few impact craters have been discovered on Earth because _______________.

Natural Disasters and the Human Population

Internal Energy and Plate Tectonics

Earthquake Geology and Seismology

Plate Tectonics and Earthquakes

Earthquakes Throughout the United States and Canada

Volcanic Eruptions: Plate Tectonics and Magmas

Volcano Processes and Deadly Events

Tsunami Versus Wind-Caused Waves

External Energy Fuels Weather and Climate

Tornadoes, Lightning, Heat, and Cold

Hurricanes

Climate Change

Floods

Fire

Mass Movements

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