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Why do we have time zones?
We have them because people have to have the same morning, noon, afternoon and night. They don't need to wake up in the night.
Why was it necessary to divide the world into different time zones?
It is because the sun's light hits different parts of the earth at different times.
Why do time zones have jagged borders?
They have jagged borders because if a time zone cut through a city going straight, people in the city would get very confused on which time it was.
What are the important lines associated with time zones?
The prime meridian and the International Date Line
What do a.m. and p.m. mean? (You don't need to be able to remember the words rather understand what they stand for)
a.m. means before noon and p.m means after noon.
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