Astronomy Unit Test Review

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Across
  1. 2. Largest planet in our solar system.
  2. 9. Twin rovers that launched in 2003.
  3. 10. A collection of stars in the sky that form a picture and have a story attached.
  4. 12. The shortest day of the year, marks the start of winter.
  5. 14. When the moon is in between the Sun and Earth.
Down
  1. 1. When the Earth is in between the sun and moon.
  2. 3. Main cause of seasons on Earth.
  3. 4. A day in spring wherein day and night are both exactly 12 hours.
  4. 5. A device used by scientists to visit other planets and collect data without having to be there themselves.
  5. 6. When tides are low due to the moon and sun's gravity pulling in opposite directions on Earth.
  6. 7. The last stage in the life cycle of an average star.
  7. 8. If a massive star does not become a black hole, it will become this.
  8. 9. When there are generally high tides because of the gravitational pull of the moon and Sun.
  9. 11. The planet closest to the Sun.
  10. 13. When a star runs out of fuel, its edges turn inward and it cools.
  11. 15. Most (chemically) similar planet in the solar system to Earth.