Ch 16 Weather Section 1
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Ch 16 Weather Section 1 Ch 16 Weather Section 1 Presentation Transcript

  • Ch 16 Weather Mrs. Harsh Section 1
  • Weather
    • The condition of the atmosphere at a certain time and place.
      • The condition of the atmosphere is affected by the amount of water in the air.
  • Water Cycle
    • Water in liquid, solid, and gaseous states is constantly being recycled through the water cycle.
    • Water cycle is the continuous movement of water from sources on the earth’s surface.
  • Humidity
    • As water evaporates, it becomes water vapor or moisture in the air.
    • The amount of water vapor in the air is called Humidity.
    • The air’s ability to hold water changes as the temperature changes.
    • As temp , the air’s ability to hold water vapor also .
  • Condensation
    • The process by which a gas, such as water vapor, becomes a liquid.
    • Condensation cannot occur until the air is saturated which means it is holding the maximum amount of water at a specific temperature.
    • Occurs when saturated air cools.
  •  
  • Clouds:
    • A collection of millions of tiny water droplets or ice crystals.
    • Form as warm air rises and cools.
    • When the air cools, it becomes saturated.
      • Water vapor changes to a liquid or a solid, depending on air temp.
        • Below freezing, water vapor changes to ice crystals.
  • Cumulus Clouds
    • Puffy white clouds that tend to have flat bottoms.
    • Form when warm air rises.
    • Generally indicate fair weather.
      • When these clouds get larger, they produce thuder storms (cumulonimbus clouds).
  • Cirrus Clouds
    • Thin, feathery white clouds found at high altitudes.
    • Form when the wind is strong
    • If they get thicker, they indicate that a change in the weather is coming.
  • Clouds and Altitude
    • Clouds are also classified by the altitude at which they form.
  • Precipitation
  • Precipitation