Weather

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Across
  1. 3. a branch of science that focuses on the atmosphere, weather, and weather forecasting.
  2. 5. a boundary separating air masses with differing characteristics
  3. 7. the state of the atmosphere over a short period of time.
  4. 10. an instrument used to measure the speed of wind
  5. 12. the concentration of water vapor
  6. 13. intense rotating storms over warm oceans, also called hurricanes or typhoons.
  7. 15. a layer or layers of gas that surround a planet and are held in place by gravity
  8. 18. the height of an object or point in relation to the starting point of sea or ground level
  9. 19. any product of condensed water vapor that falls from clouds under gravitational pull
  10. 20. the force of air pressing down on any surface
  11. 21. the weather conditions of a particular region over a long period of time.
Down
  1. 1. a force that acts between particles of the same substance to hold them together.
  2. 2. the force of air pressing down on any surface
  3. 4. exhalation of water vapor by a plant and its evaporation, mainly through the leaves
  4. 6. an instrument that shows the direction in which the wind is blowing
  5. 8. an imaginary line around the earth that divides it into northern and southern hemispheres.
  6. 9. a violently rotating column of air that extends from a thunderstorm to the ground.
  7. 11. the process when a liquid changes to gas
  8. 14. the redirection, or bending, of a wave, such as a light wave, as it passes from one medium to another.
  9. 16. the number of heat units needed to raise the temperature of an object by one degree celsius
  10. 17. a force that acts between particles of different substances to hold them together.