Science Crossword Puzzle

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Across
  1. 4. Determined the value of the photoelectric work function
  2. 7. Discoverer of electrons
  3. 10. SI unit of frequency is named in his honour.
  4. 11. Father of nuclear physics and the discoverer of protons
Down
  1. 1. Student of Hertz whose major contributions were in the study of cathode rays
  2. 2. Major contribution was theory on atomic structure
  3. 3. Discoverer of photoelectric effect
  4. 5. First woman to win Nobel prize for her works on radioactivity
  5. 6. An apple fell on his head
  6. 8. Maxwell propounded the theory of electromagnetism
  7. 9. Discoverer of incandescent light