Cryptic Crossword

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Across
  1. 1. The instrument that measures the current within a circuit
  2. 3. The process used by plants to convert sunlight into chemical energy
  3. 5. The Engineering Club President
  4. 6. Cell division
  5. 9. The number of planets in our Solar System
  6. 10. Sub-atomic particle with a negative charge
  7. 11. Sub-atomic particle with no charge
  8. 12. Jega's last name
Down
  1. 1. Non-living factors in the environment
  2. 2. The instrument that measures electrical potential difference
  3. 4. The scientist who theorized the theory of relativity
  4. 5. The largest planet in our Solar System
  5. 7. One of Mars' two moons
  6. 8. The first phase of cell division
  7. 13. The Engineering Club Vice President