Chapter 21 Lesson 1-2 Crossword Puzzle

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Across
  1. 3. What occurs when a planet's atmosphere traps solar energy and causes temperatures to increase?
  2. 6. What are the rocky solid planets closest to the sun called?
  3. 8. Giants What is the group of the four other planets further from the sun made of gas called?
  4. 9. Planets What is the group of the closest terrestrial planets to our sun?
  5. 10. What space object is made up of gas,dust and ice and moves around the sun in an oval shaped orbit?
Down
  1. 1. What are round objects that orbit the sun but can't qualify as planets or moons called
  2. 2. What is the time it takes to spin around or rotate once called?
  3. 4. What is the time it takes to travel around the sun once called?
  4. 5. What are the small rocky objects that orbit the sun in a belt between the orbits of Mars and Jupiter?
  5. 7. What is the measurement that's distance from the Earth to the sun.