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Name: Gina Chapman
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Age: 30s
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Question:
My daughter would like to know the reason Alaska has 6 months of dark and 6 months of light?



Replies:
Not quite true. In the portion of Alaska north of the arctic circle there is at lease one day of the year when the sun does not technically rise and one day when it does not technically set. Technically because there is still twilight. The farther north you go, the larger the number of days of all sunlight or all darkness.

The reason for this is what is called the seasonal tilt of the earth. It tilts 23.5 degrees. This tilt is directly toward the sun on the summer solstice and directly away on the winter solstice.

Larry Krengel



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