Physics

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Across
  1. 2. Watering plants in a natural way
  2. 4. One condition of water
  3. 6. The beauty of the sky
  4. 8. A principia of relax and an apple
  5. 10. Congestion of planets
  6. 11. English mathematician, astronomer, and physicist
  7. 13. Invisible,terrible impact of technology
  8. 14. gas It doesn't exist
Down
  1. 1. Cluster of lenses, giving the images
  2. 3. Strike two things
  3. 4. E=mc^2
  4. 5. A thing for cooling
  5. 7. A thing that is need for person,who has not 100% of eyesight
  6. 9. This is caused by a movement of an electrons
  7. 12. something more in a small area