Solar System Part 2

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Across
  1. 4. Chunks of rock or dust that break off of a comet or asteroid. These objects enter Earth's atmosphere and vaporize, giving off light. Also known as "shooting stars".
  2. 6. Formal name for the rocky land planets.
  3. 8. Balls of ice, rock, and dust that orbit the sun. Gives off a glowing tail.
  4. 9. Scientist who discovered the law of gravity.
Down
  1. 1. An event where a large number of meteors enter the Earth's atmosphere. Occurs when the Earth passes through the debris left behind by a comet.
  2. 2. A force that pulls objects toward each other.
  3. 3. The shape of the planets orbit around the sun. Slightly oval or egg-shaped.
  4. 4. Rocky objects that are large enough to get past Earth's atmosphere and strike the ground.
  5. 5. Small, rocky objects that orbit the sun.
  6. 7. Formal name for the gas planets.