Vocabulary 1, Unit 4

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Across
  1. 4. – A ball of ice and rock that travels through space with a glowing tail.
  2. 5. – The path a planet or moon takes around another object in space.
  3. 6. – A round object in space, like Earth or Mars, that moves around a star.
  4. 8. – The sun, its planets, and everything that travels around it.
  5. 10. – Something that comes from outside Earth.
  6. 12. – A formal discussion where people give reasons for and against an idea
Down
  1. 1. – Everything that exists: stars, galaxies, planets, and space.
  2. 2. – A giant group of stars, dust, and planets, like the Milky Way.
  3. 3. – A trip from one place to another.
  4. 7. – Facts, numbers, or information we collect to learn something.
  5. 9. – The huge area beyond Earth’s atmosphere, full of stars and planets.
  6. 11. – The layer of air and gases around a planet.