Solar Airplanes

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Across
  1. 3. __________ is improving every day.
  2. 5. Fuel is sometimes measured in ______.
  3. 6. Piccard & Borschberg ________ flew a solar-powered airplane.
  4. 7. Solar-power does not cause _________.
  5. 8. Some day, __________ airplanes might run on sunlight.
  6. 11. Their solar-powered airplane ______ less than a car.
Down
  1. 1. Solar-power makes ________ power from sunlight.
  2. 2. Sunlight provides _____-_____.
  3. 4. A ___ is a type of airplane.
  4. 5. The airplane will ____ at the airport.
  5. 9. Piccard & Borschberg will build _______ solar-powered airplane.
  6. 10. Piccard & Borschberg ____ from Europe to Africa.