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The Universe and Planet Earth

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