Maple Heights OGT Science Study Guide-- Pages 23 thru 26

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Across
  1. 1. We experience night and day because the earth ___ on its axis.
  2. 2. Our solar system belong to the ___ Galaxy.
  3. 6. Large group of stars.
  4. 7. These allow astronauts to travel to close planets, our moon & into outer space to collect data and experience first hand the conditions in space.
  5. 8. When the northern hemisphere has ___ the southern hemisphere has winter because of the earth’s axis tilt.
  6. 10. With optical ___ astronomers see closer the objects in outer space such as moons, planets, galaxies.
  7. 14. These are sent by scientists to collect data on far away planets that humans can never get to.
  8. 15. This kind of eclipse occurs when the moon either partially or completely blocks the sun from the Earth’s view.
Down
  1. 1. We experience the seasons because the earth revolves around the sun and is tilted on its axis.
  2. 3. Gravitational pull between objects ___ as their masses increase.
  3. 4. One complete revolution of the Earth around the sun takes one ___.
  4. 5. This force is the reason the planets revolve around the sun.
  5. 9. Gravitational pull between objects ___ as the distance between them increases.
  6. 11. These are used to transmit signals from outer space such as pictures, topographic maps.
  7. 12. There are 3 different kinds of (shapes of) galaxies including ___, elliptical and irregular. The Milky Way Galaxy is a spiral galaxy.
  8. 13. This kind of eclipse occurs when the Earth blocks our view of the moon.