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Cards In This Set
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Which of the following facts could result from the Moon's slow rotation and lack of an iron core?
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The Moon has essentially no magnetic firled
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What is the origin of regolith?
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Rock crushed by impacts
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Which of the following facts supports the hypothesis that the surface features of the Moon did not change over the past 3 billion years?
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The Moon does not have an atmosphere
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What is the composition of regolith?
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Anorthosite fragments in the highlands and basaltic in the maria
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What conclusive proof do we have that the Moon has essentially zero magnetic field?
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Magnetic field measurements taken by the Apollo astronauts
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Why do astronomers believe that the lunar maria are younger than the highlands?
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The maria have fewer cratrers
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The Moon's average density is 3 g/cm cubed, while the Earth has 5 g/cm cubed. Which of the following conclusions can be drawn from this comparison?
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The Earth has more iron and nickel
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What is the probable origin of some mountain chains observed near the lunar maria?
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They were formed by material that pushed up by the impact that created the maria.
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Astronomers attribute the lack of atmosphere on the Moon to:
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The low gravitational force of the Moon
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Which of the following changes would you expect to observe if the Moon was orbiting on the ecliptic?
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Only a lunar eclipse every full moon and a solar eclipse every new moon are correct
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An astronaut on the far side of the Moon would be able to see:
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The Earth rising and setting every 29 days
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Why do astronomers interpret the lack of impact cratering as evidence of a younger terrain?
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Because at the present rate of impacts, a newly formed surface will not suffer many hits
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Astronomers claim that the features on the Moon's surface are older than on Earth, because:
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The surface of the Earth is subject to water and wind erosion, which do not occur on the Moon
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Rays appear to radiate from some of the Lunar craters. What is the origin of these rays?
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Streaks of pulverized rock
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The absence of plate tectonic motion on the Moon can be explained by the fact that:
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The Moon interior is cooler than the Earth's and therefore there is no heat to createconvective motion
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