Chapter 21 Lesson 1-2 Crossword Puzzle

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Across
  1. 3. Which inner planet has the largest mass?
  2. 5. A planets orbit shape is called a what?
  3. 6. The southern hemisphere of Mars is covered in what?
  4. 7. What gas makes up 97% of Venus's atmosphere?
  5. 8. When a planet is closer to the Sun it moves..?
  6. 9. The fourth planet from the Sun is named.
  7. 10. The largest object in our solar system.
Down
  1. 1. These objects are made of gas,dust,also ice and they move around the Sun in an oval shaped orbit, what are they called?
  2. 2. What are the planets closet to the Sun, that have rock and metal solid outer layers called.
  3. 4. What is the smallest inner planet?