Air pressure

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 2. Moving air (4)
  2. 4. A mixture of gases required for breathing (3)
  3. 6. The force used in pushing (6)
  4. 8. A swift whirling motion (4)
  5. 10. A violent rotating windstorm (7)
  6. 11. An aircraft that has a fixed wing and is powered by propellers or jets (5)
  7. 12. The act of conducting a controlled test or investigation (10)
  8. 13. Study of the natural world through experiments (7)
  9. 14. To move downward and lower, but not necessarily all the way (7)

Down

  1. 1. A mechanical device that rotates to push against air or water (9)
  2. 2. Whether it's rainy, sunny or windy outside (7)
  3. 3. The act of giving temporary assistance (4)
  4. 5. Two-winged insects characterized by active flight (3)
  5. 7. The vast area beyond Earth's atmosphere (5)
  6. 9. Force pushing on something (8)
  7. 11. Enterprising or ambitious drive (4)