Question 1

Rounded pebbles have been found on Mars.What does this finding suggest?

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Question 2

Of the terrestrial planets, which has the most volcanoes?

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Question 3

Explain the differences between shield and composite volcanoes.

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Question 4

How do we know that Earth's magnetic field has flipped its polarity many times in the past?

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Question 5

What is one major difference between the volcanoes on Venus and Mars and the volcanoes on Earth? What might explain this difference?

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Question 6

Describe the difference between seismic primary and secondary waves and why this difference makes them useful in probing the structure of Earth's interior.

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Question 7

Along which type of plate boundary are mountain chains commonly found?

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Question 8

Of the terrestrial planets, which have active plate tectonics?

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Question 9

How does a chain of shield volcanoes, like the Hawaiian chain, form?

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Question 10

Suppose that two planets of the same size formed from the same material.If planet A had differentiated and planet B had not, how would samples of their surface rock differ? Explain why.

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Question 11

The American and African/European continents are now separated by the Atlantic Ocean, which is approximately 4,000 km wide.Assuming a continental drift rate of 2 cm/yr, how long has it been since they were one land mass?

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Question 12

Which planet would you expect to have a larger molten core: a planet of Earth's size or a planet that had half the radius of Earth? Explain why.

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Question 13

Describe two reasons why we know that Earth's magnetic field cannot be a result of permanent magnetism in a solid iron core.

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Question 14

How do astronomers determine the average density of a planet using an orbiting object? How do they estimate the material composition of the planet without surface measurements?

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Question 15

What is the evidence for a large asteroid impact and an associated mass extinction event occurring approximately 65 million years ago?

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Question 16

Describe one example of tectonic disruption on Mercury, Venus, and Mars, respectively, and explain how they formed.

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Question 17

Why does Earth have a stronger magnetic field than any of the other terrestrial planets?

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Question 18

If there were water (in any phase) on Mars today, where would it likely be? Name two separate pieces of evidence we have that Mars once had flowing water on its surface and how this evidence was obtained.

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Question 19

How has the radioactive heating of Earth varied from when it was first formed 4.6 billion years ago?

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Question 20

Three different things can happen when two continental plates meet.What is the name given to each, and briefly explain what happens in each.

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Quiz 8: The Terrestrial Planets and Earths Moon