Exam 2: Earth Systems

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Match the following options to its correct definition. -is where most of the meteoroids headed toward Earth burn up

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Why is ozone important?

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The zone of plastic flow in the mantle is called:

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Which component is part of the biosphere?

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Match the following options to its correct definition. -recognized that some vertebrate fossils represented species that no longer existed

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Elements that have the same number of protons but different numbers of neutrons are called:

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Match the following options to its correct definition. -Has an inner part that is solid and an outer part that is liquid.

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The chapter describes 3 atmospheres that the Earth has had in the past. How did the atmosphere evolve over time? What controls the gases in the atmosphere (List at least 3)?

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Match the following options to its correct definition. -demonstrated that "stones" that looked like shark's teeth were in fact fossils that represented life in former seas

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How much CO2 is present in the Earth's atmosphere? If it is present in such small amounts, why does it have such a large impact on Earth's climate?

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What could cause a species to become extinct?

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Define and describe each component of the geosphere. List at least one important property for each region that makes up the geosphere.

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What is Steno's Law of Superposition?

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List and describe each component of the hydrosphere. Draw the water cycle in your answer.

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Most water on the Earth is underground.

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What is a volatile?

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Use the statement below to answer the question(s) that follow. Uranium 238U decays to lead 206Pb with a half life of 4.5 billion years. -Which isotope is the parent?

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Use the statement below to answer the question(s) that follow. Uranium 238U decays to lead 206Pb with a half life of 4.5 billion years. -What does the statement mean to a geologist?

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Which of the following is an example of a mass extinction?

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Match the following options to its correct definition. -contains the "ionosphere"

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