Why does winter happen?

Answer 1

Jan 1, 2008: Virologists investigating transmission of the flu virus found that it is more likely to spread at colder temperatures. The dry, cold conditions pull moisture out of droplets released by coughs and sneezes, which allows the virus to linger in the air. Additionally, cold, low humidity air dries out the nasal passages and makes virus transmission more likely. This contradicts the long-held view that the flu spreads because the immune system is less active during the winter.

Source and full story:

http://www.sciencedaily.com/videos/2008/0103-does_winter_cause_the_flu.htm

Answer 2

Earth's axis is tilted some 23°. The result of this is that in the more northern and southern latitudes, the days are shorter in the winter season. Sunlight strikes the earth at a lower angle, so the earth radiates more heat than it receives. This reduction in temperature is sufficient to fall below the normal freezing point of water (0° C or 32° F), so instead of rain the result is snow.

Answer 3

Winter happens because the Earth's axis is tilted, so different parts of the planet receive varying amounts of sunlight throughout the year. During winter, the hemisphere is tilted away from the sun, causing the days to be shorter and the sun to be lower in the sky, resulting in colder temperatures.

Answer 4

Winter occurs when a hemisphere is the furthest it will get from the sun. This happens because the earth rotates and is tilted.

Answer 5

winter happens because of space almost everything happens because of space

Answer 6

The seasons have to chance.

Answer 7

because it's part of a season