Which word means the whole cosmic system of matter and energy of which Earth is a part?
universe
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15
Which planet is Earth’s twin in size and mass?
Venus
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15
Which planet has a large red spot?
Jupiter
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monster
Reset all scores!
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rocket
Go to first place!
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gift
Win 25 points!
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lifesaver
Give 25 points!
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15
Which planet is the farthest away from the sun?
Neptune
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15
Which 2 planets have the most moons?
Jupiter and Saturn
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eraser
Reset score!
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magnet
Take 20 points!
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rocket
Go to first place!
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thief
Give points!
5
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15
20
25
15
Name the 4 outer planets.
Jupiter, Saturn, Uranus, Neptune
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15
What is the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets called?
the solar system
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15
What is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction?
a galaxy
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15
Which planet has rings made of dust and ice?
Saturn
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15
What is the force that governs all planetary movement in the solar system?
