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1.What is Mercury's most well-known feature?
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Caloris Basin
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2.What is the point of the planet closest to the sun?
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Subsolar point
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3.What planet is closest to Earth in size?
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Venus
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4.What two moons orbit Mars?
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Phobos and Deimos
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5.Saturn is famous for its _____.
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Set of over a thousand rings
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6.Mercury's core is mostly made up of:
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Metal
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7.A day on _____ is longer than the planet's year.
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Venus
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8.On Mars, which polar cap is larger and colder?
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Northern
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9.What is the cause of tremendous heat on Venus?
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The thick atmosphere and clouds
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10.True or False: Mars has liquid water.
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False
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11.Venus is named after the Roman goddess of _____.
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Love and Beauty
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12.The reddish color of Mars comes from all the _____ in its soil.
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Iron
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13.Jupiter is mostly made up of _____?
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Hydrogen and Helium
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14.True or False: Jupiter has rings.
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True
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15.True or false: Saturn rotates more quickly than Earth.
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True
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16.Scientists think that Europa may have _____?
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An underground ocean
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17.What planet has a density less than water?
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Saturn
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18.Saturn takes _____ Earth years to orbit the sun.
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29.5
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19. What is Jupiter's most well-known feature?
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The Great Red Spot
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20.The yellow bands on Saturn are formed by _____.
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Crystallized ammonia
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21.Comets contain lots of _____.
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Ice
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22._____ are often called "minor planets."
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Asteroids
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23.The Great White Spot is a storm that lasts _____.
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A Month
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24.What three planets rotate in the opposite direction of all the other planets?
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Venus, Uranus, and Pluto
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25.The Milky Way is a _____ galaxy.
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Spiral
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26.Comet tails are made mostly of _____.
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Gas
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27.True or False: the Milky Way is the smallest galaxy in the Local Group.
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False
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28.What is the closest planet to the sun?
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Mercury
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29.When an asteroid is burning up in the Earth's atmosphere, it is called a _____.
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Meteor
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30.A comet's tail points _____.
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Away from the sun
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31.Our solar system is located in the Milky Way arm known as the _____ arm.
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Orion
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