Science Crossword

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Across
  1. 3. Type of energy derived from the Earth's internal heat
  2. 9. Primary pigment in plants responsible for photosynthesis
  3. 11. Device measuring the effectiveness of solar cells
  4. 12. City that hosts the annual Nobel Prize award ceremony
  5. 14. The smallest particle of an element that retains its properties
  6. 15. A unit measuring the energy of photons
Down
  1. 1. Technology used to harness wind energy
  2. 2. Ancient city known for its hanging gardens, one of the Seven Wonders
  3. 4. Type of current produced by photovoltaic cells
  4. 5. Material that can absorb photons and convert them to electrons
  5. 6. Greek philosopher known for his method of questioning
  6. 7. Technology that converts sunlight directly into electricity
  7. 8. Painter known for "Starry Night"
  8. 10. The science of light and vision
  9. 13. Device used to measure electrical resistance