Solar System

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Across
  1. 4. The four largest of Jupiter- Io, Europa, Ganymede, and callisto
  2. 5. The time it takes an object to to complete one rotation
  3. 6. A small, rocky particle that moves through space
  4. 8. Made out of gas, dust, and ice, and moves in an oval-shaped orbit around the Sun
  5. 9. The time it takes an object to travel once around the Sun
  6. 10. Millions of small, rocky objects that orbit the Sun in the Asteroid Belt between he orbits of Mars and Jupiter
Down
  1. 1. The average distance Earth to Sun-about 150 million km
  2. 2. Planets closest to the Sun, are made out of rock and metal, have solid outer layers
  3. 3. Occurs when a planet's atmosphere traps solar energy and causes the surface temperature to increase
  4. 7. A meteoroid that strikes a planet or moon