Time Zones

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Time Zones

• By Noah Conk

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Why do we need time zones?

• A long time ago people told time by the suns
  location.
• Because of this, cities that were only a short
  distance away may have different times.
• As people started to travel they needed a better
  way to tell time.

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How did we get our Time Zones?

• Scientists started thinking about time zones by
  saying that everyone wants the sun to be at the
  highest point at 12 noon (midday).
• The earth spins, as it travels around the sun,
  one half of the earth is in darkness and one half
  in light, all the time.

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How did we get our Time Zones?

• The scientists came up with a way to separate the
  earth into different time zones.
• The time zones are world globe division of 15
  each, starting at Greenwich, England
• Greenwich was chosen because the prime meridian
  runs through it.

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What are Time Zones?

• There are a total of 24 time zones each separated
  by 15 .
• In one hour of a day the earth rotates 15 which
  leads us up to another time zone.
• This is how we have twenty four hours in a day.

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U.S.A. Time Zones

• http//www.worldtimezone.com/time-usa12.php

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Video on Time Zones

• http//www.youtube.com/watch?vwidWLhIIbzs

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Where I Found My Information

• http//www.funsocialstudies.learninghaven.com/arti
  cles/timezones.htm
• Time Zones (book) by David A. Adler