Science 6B L8 Weather- Set B

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Across
  1. 5. loud sound that occurs following lightning because the air heats and expands so quickly that it explodes
  2. 6. occurs when wind turns slightly outward away from the highest pressure causing air to move away from the center, usually indicate nice weather
  3. 9. line on a weather map connecting places with the same air pressure
  4. 10. small but powerful storm with very strong, whirling winds that may occur with a thunderstorm or hurricane
  5. 11. boundary between air masses that forms when a faster-moving warm air mass runs into a slower-moving cold air mass
  6. 13. cloud that forms low in the troposphere in layers that spread horizontally
  7. 15. scientist who studies weather and makes weather forecasts
  8. 16. amount of water vapor in the air
  9. 19. instrument used to measure the amount of rain
  10. 21. storm with heavy rain and lightning
  11. 23. percent of water vapor in the air relative to the maximum amount the air can hold
  12. 24. cloud that forms low in the troposphere in layers that spread horizontally
  13. 25. instrument used to measure temperature
Down
  1. 1. boundary between air masses that forms when a warm air mass is trapped between two cold air masses
  2. 2. wind turning slightly inward towards the lowest pressure
  3. 3. huge spark that jumps between oppositely charged parts of the same cloud, between one cloud and another, or between a cloud and the ground during a thunderstorm
  4. 4. boundary between air masses that forms when a faster-moving warm air mass runs into a slower-moving cold air mass
  5. 7. instrument that measures humidity
  6. 8. high water that rushes ashore when the eye of a hurricane passes over the coastline
  7. 12. percent of water vapor in the air relative to the maximum amount the air can hold
  8. 14. boundary between air masses that are stalled in the same place
  9. 17. conditions of the atmosphere, such as temperature and humidity, at a given time and place
  10. 18. instrument that measures the amount of snow
  11. 20. large storm with high winds and heavy rains that develops from a tropical cyclone over warm ocean water
  12. 22. line on a weather map connecting places with the same temperature