Science Crossword Puzzle

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Across
  1. 2. Mercury has a very _____ year.
  2. 4. _______was named after the speedy messenger of the Roman gods.
  3. 7. Mercury's appearance is very similar to our ____.
  4. 9. Mercury does not have enough _______ to support an atmosphere.
  5. 10. space probes show mercury having craters & _____.
  6. 11. A mercury year has only___-_____-____ Mercury days.
  7. 12. Mercury has __ moons.
  8. 13. Mercury rotates very ______.
  9. 14. Mercury has a similar magnetic field to that of _____'_.
Down
  1. 1. it's ____-________ and closeness to the sun causes its surface temperature.
  2. 3. Mercury supposedly has an all ______ core.
  3. 5. Mercury is ________ the planet in the solar system.
  4. 6. Mercury's orbit is _________ more than others.
  5. 8. Mercury's magnetic field is only ___-________ about as strong as earths.