Natural Science Crossword Puzzle

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Across
  1. 2. This is what we call frozen water
  2. 4. This planet is the smallest planet in our solar system
  3. 6. Two or more cells together in a circuit is known as a ...
  4. 10. This is the unit for power
  5. 11. These orbit the nucleus of an atom
  6. 12. This metal is liquid at room temperature
  7. 13. These animals eat both plants and animals
Down
  1. 1. This is the largest planet in our solar system
  2. 3. This is the first element on the Periodic Table
  3. 4. This planet is known as the Red Planet
  4. 5. These animals eat only other animals
  5. 6. This is the scientific study of plant life
  6. 7. This is the largest moon of Neptune
  7. 8. This is the unit for energy
  8. 9. This controls the flow of electricity in a circuit