Lightning

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Lightning

• Why it happens.

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How clouds forms

• A cold air mass forces its way in on a warm air
  mass.
• The warm air mass is lighter and it moves upward.
• The warm air mass is full of water vapor from
  evaporation of water from dew, ponds, lakes and
  rivers.
• The water vapor combines with particles in the
  air. The more in the air a cloud forms

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What happens

• Particles in the cloud collide with each other
  causing electrons to be knocked from the atom
  making up the particle.
• this causes the particle to become negatively
  charged. And fall to the bottom of the cloud.
• The electron that was knocked off becomes
  positively charged and rise upward in the cloud

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How lightning forms

• The Great of negative charged particles at the
  bottom of the cloud repel the negative charges on
  the ground
• This causes the earth surface under the cloud to
  be positively charged.
• Opposing charges attract to each other forcing a
  path through the air toward the ground. A
  lightning stroke.

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Lightning continued.

• The electrons (lightning stroke) are moving at
  thousands of miles per hour.
• As the electrons move to the earth they collide
  with other particles as they did in the could and
  create a chain reaction until it reaches the
  earth
• The colliding of the molecules to the earth
  creates light.
• The movement of the molecules also move the air
  around the path. This movement creates a sound.
  Thunder.
• Sense light travels faster than sound we see the
  lightning before we hear the thunder, even though
  they happen at the same time.

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Quiz

• Can you have thunder with out lightning?
• A Yes.
• B No.
• C Some times.
• D Depends on how big the cloud is.

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correct

• Supper you learned something new. The answer was B

End
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Incorrect

• That is not the right answer maybe you need to
  re-read you may have just missed something

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Bio Page

• This was created by Sarah Benson
• For more info you can go
• 1 Lightning and Thunder By Martin L. Keen.
  Published by Julian Messner, a division of Simon
  Schuster, Inc New York, N.Y.