Astronomy

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What are some of the moon's key features?
Sea of Tranquility, Ocean of Storms, Sea of Crises, Apennine Mountain Range
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What is the diameter of the moon?
3,500 km
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How far away is the moon?
380,000 km
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What are the moon's rotational period and orbital period?
27.3 days
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Why is the far side of the moon not visible from earth?
Synchronous rotation
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How is the far side of the moon different from the near side?
There are lot more craters and a lot less maria
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How do maria and terrae differ?
The rock that makes up the highlands is lighter in color and crystallized more slowly than the maria. The rock looks light because it reflects more of the Sun's light.
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How are maria created?
Mare are created when there are giant collisions with the moon that create huge craters. The crater fills with lava that eventually hardens.
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How are craters created?
Craters are created when other bodies collide with the moon.
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How can you tell which craters are the youngest?
By seeing which one has not had another crater form on top of it.
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What is a rille?
A long channel in the surface of the moon.
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What is a wrinkle ridge?
Low ridges on the maria which were created when the basaltic lava cooled and contracted.
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Why does the moon have no atmosphere?
It has very little gravity.
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What were the purposes of the Apollo space missions?
Establishing the technology to meet other national interests in space. Achieving preeminence in space for the United States. Carrying out a program of scientific exploration of the Moon. Developing man's capability to work in the lunar environment.
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What were the ALSEPs?
The Apollo Lunar Surface Experiments Package (ALSEP) comprised a set of scientific instruments placed by the astronauts at the landing site of each of the five Apollo missions to land on the Moon following Apollo 11 (Apollos 12, 14, 15, 16, and 17).
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How was the moon created?
The prevailing hypothesis today is that the Earth–Moon system formed as a result of a giant impact, where a Mars-sized body (named Theia) collided with the newly formed proto-Earth, blasting material into orbit around it that accreted to form the Moo
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What is the evidence for the giant impact hypothesis?
Rocks collected during Apollo missions show oxygen isotope ratios similar to those on earth.
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Other cards in this set

Card 2

Front

What is the diameter of the moon?

Back

3,500 km

Card 3

Front

How far away is the moon?

Back

Preview of the front of card 3

Card 4

Front

What are the moon's rotational period and orbital period?

Back

Preview of the front of card 4

Card 5

Front

Why is the far side of the moon not visible from earth?

Back

Preview of the front of card 5
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