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15 Cards in this Set
- Front
- Back
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Astronomy
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The science of observing the sky
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Shadows
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Shadows are the the reflection of an object
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GEocentric
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Earth is Center in the universe
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Galileo Galilei
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He is a Italian astronomer who was the first one to use a telescope for science and he figured out with that teloscope, sun spots, jupiter's moons, evidence that earth goes around the sun,Moon has Craters
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Rotation
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When an object turns in a circle
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Revolution
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When and object moves around another object.
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Solstice
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The solstice is when the sun is either at it's highest point or the lowest point of the sky
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Equinox
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This occurs twice a year, it is when the whole world gets the same amount of sunlight and length of day this occurs on september 21 and march 21
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What is earth's axis
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23.5 degrees
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how many earths would fit inside the sun
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1 million
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how many moons would fit inside earth
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about 4
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how far away is the earth away from the sun
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about 150 million km away
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how far away is the earth from the moon
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384,000 km away
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Leap Year
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Since there is an extra1 quarter of a day every earth year, every 4 earth years we add in extra day since 4 quarters make a whole day, so if you have a birthday on Febuary 29, you only have your birthday once every 4 years
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BIggest Star
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Pelarus, because it is at the top of the north pole and it barely moves at all, it tells us that our tilt does not change.
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