Weather

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Weather
Rain
Lightning
Wind
Resources
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Rain Snow

• Warm air turns the water from rivers, lakes, and
  oceans into water vapor that rises into the air.
  That water vapor forms clouds, which contain
  small drops of water or ice crystals (depending
  on how high the cloud is and how cold it is).
• As clouds rise higher and higher, the air gets
  colder and colder. When the water vapor in the
  cloud becomes too heavy, it falls back to the
  ground as rain or snow.

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Lightning

• The most common thunderstorm cloud is a tall
  cloud which is precipitating, called a
  cumulonimbus cloud (cumuli- meaning tall, high
  altitude, and nimbus meaning precipitation).
  These clouds form when conditions include upward
  winds, rather moist air, and cooling
  temperatures.
• Within this cloud, there are many electrons
  giving off their charges. The tendency of charges
  within a cloud is to have positive charges gather
  toward the upper portion and negative charges in
  the bottom of the cloud.

4
Wind

• Wind is air moving horizontally.
• It is created by large scale differences in the
  air's density. This forces the air to move toward
  regions of lower pressure.
• If you stand with your back to the wind, an area
  of low pressure would be off to your left and the
  high pressure off to your right.
• The greater the differences in pressure, the
  stronger the wind.

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Resources

• For local weather, or weather around the world,
  click here!
• For some definitions of some weather terms just
  click here