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21 Cards in this Set
- Front
- Back
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What is the spinning motion of a planet about its axis called?
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rotation
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What is the movement of an object around another object called?
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revolution
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What are the two days of the year on which neither hemisphere is tilted toward or away from the sun called?
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equinox
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What are the two days of the year on which the noon sun is directly overhead at either 23.5 degrees South or 23.5 degrees North?
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solstice
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What is the path of an object as it revolves around another object in space?
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orbit
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What is the orbit of a satellite that revolves around Earth at the same rate that Earth rotates?
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geosynchronous
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Why do we have seasons?
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The seasons are caused by the tilt of Earth's axis as Earth travels aroung the sun.
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What is it called when the Earth is directly between the sun and moon, blocking the sunlight to the moon?
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Lunar Eclipse
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What is it called when the moon is directly between the sun and Earth, blocking the sunlight to Earth?
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Solar Eclipse
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During what phase does a Lunar eclipse occur?
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at a full moon
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Which type of eclipse is most common to see from Earth?
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Lunar eclipse
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When does the summer solstice occur?
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June 21st
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Why do we see only one side of the moon from Earth?
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The same side of the moon always faces the Earth because it revolves around Earth in the same amount of time the moon takes to rotate on its axis.
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How long does it take the moon to revolve around the Earth?
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24 hours
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How long does it take the Earth to travel around the sun?
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365 1/4 days
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How many days does it take to go through the phases of the moon?
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29 1/2 days
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What causes tides?
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Tides occur mainly because of differences in how much the moon pulls on different parts of Earth
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What did Galileo think he saw on the moon and what did he name them?
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He thought that he saw oceans and called them marias.
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What are the features of the moon?
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craters, highlands, mountains, marias
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Where did much of the information we know about the moon come from?
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Moon rocks
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What is a "blue moon"?
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When you have 2 full moons in oe calendar month.
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