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What does AU mean?
Astronomical Unit
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What is the distance of one AU?
93,000,000 miles
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What is a gas giant?
What is a planet that has a deep massive atmosphere
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Which moon of Jupiter is made of ice?
Europa
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Which moon of Saturn is volcanic?
IO
200
Name the inner planets in order.
Mercury, Venus ,Earth, Mars
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What are the inner planets called?
Terrestrial planets
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What is a artificial body made my man that revolves around a planet?
Satilite
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What is our moon called?
Luna
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How do we think our moon was formed?
A massive object the size of mars slammed into earth and broke off a small part
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How old are the rocks found on the moon?
4.6 billion years
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What is the change of a sunlit area of one body seen from another body?
Phase
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The process that traps thermal energy
Greenhouse Effect
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What is an eclipse?
When a shadow of a celestial body falls onto another
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How long does it take for Plutos moon to rotate around Pluto?
6.4 days
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What is the Counter Clockwise Rotation of a planet or moon?
Prograde Rotation
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What is the clockwise rotation of the moon or planet?
Retrograde Rotation
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What planet is tilted 90 degrees on its axis?
Uranus
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What Planet has the Great Red Spot?
Jupiter
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Comets are also known as what?
Dirty snowballs
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How far does light travel in one minute?
18,000,000 km
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What is the total diameter of Saturn's rings?
What is 272,000 km
500
Which tail of a comet point away from the sun when it passes?
Iron tail
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How many tails does a comet have?
Two
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What are the comets tails made of?
Iron and dust
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