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The Universe and Planet Earth

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    universe
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  • What is the name of our galaxy?
    The Milky Way
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  • How many time zones are around the world?
    24
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  • How long is one revolution?
    365 days
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  • What revolves around the Earth?
    The Moon
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  • What is the most accepted theory for how the Universe began?
    The Big Bang Theory
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  • There are huge, powerful telescopes in special buildings called_________.
    observatories
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  • The Earth spins on its __________.
    Axis
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  • The Earth revolves around the __________.
    Sun
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  • What are the imaginary lines that divide the world into different time zones?
    meridians
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  • What is Earth's satellite?
    The Moon
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  • How many planets are there?
    8
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  • __________ orbit the Sun and are made of ice, rock and dust.
    Comets
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  • ____________ are large rocks that orbit the Sun.
    Asteroids
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  • _____________ are small pieces that break off asteroids or comets and sometimes enter the Earth's atmosphere.
    Meteoroids
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  • What is the space rock that hits the Earth's ground called?
    Meteorite
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  • What occurs when the Moon is between the Earth and the Sun?
    a solar eclipse
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