Solar Energy

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Across
  1. 3. Solar energy is directly dependent on the ____.
  2. 4. In 1883 a ______ was installed on a roof in NYC.
  3. 6. Reduces _______ emissions.
  4. 8. Works in any _______ if the sun is out.
  5. 9. Solar power cells convert sunlight into _______ ______ electricity.
  6. 10. The use of solar energy is considered ______ ______.
  7. 11. Published papers on solar energy and gained popularity.
Down
  1. 1. There is concern over __________ of farmlands and forests.
  2. 2. 1869 Invention regarding solar energy.
  3. 3. The first use of solar energy dates back to ________ BCE.
  4. 5. Spacecraft that used solar energy as backup energy.
  5. 7. As of 2022 more than ________ countries utilize solar energy.