SEASONS

First and foremost�.It is notwarmer in the summer due to the fact that we space closer come the Sun. Lots of people think this, however it is justnot true. In fact, as soon as it is summer in Lenox, the earth is actually at itsfarthest suggest from the Sun.

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So what causes the seasons???

2 things

The tilt How direct the Sun�s rays are

The earth is tilted in ~ 23.5 ˚

The axis constantly points come Polaris

Polaris is knownas the phibìc Star

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The arrows come the right stand for light rays from the sun. Because the sunlight is so large compared to the Earth, only the rays the come straight at earth will hit it. The light rays that space hitting the planet at 90 levels are well-known as direct rays. Right here they fight the earth in the red area. Because the planet is curved, not all light ray hit it directly. Irradiate rays the hit the earth at an angle are recognized as indirect rays (green area). Locations of the planet that are hit by straight rays space warmer than areas that room hit by indirect rays. The equator (yellow) is constantly hit by direct rays that the sun. This is why that is always warm there. The poles are constantly being struggle by indirect rays. That is why the is cold there.

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Take a look at the photo above. It reflects the earth in different positions inits orbit. Polaris would be way off tothe left. The planet can be split into2 halves, a phibìc hemisphere and a southern hemisphere. Due to the fact that the tilt the the earth is always pointedin the exact same direction (toward Polaris), different hemispheres get an ext or lessdirect light ray at different times of the year.Look where it states �summer� above.The straight rays of the sun space hitting the northern hemisphere. Other than at the equator, the Southernhemisphere will certainly only acquire indirect rays.This is why we have actually summer in June; the planet is in this position in itsorbit. In Australia,which is in the southerly hemisphere, just indirect irradiate is present, so theyexperience winter in June. ~ above theopposite side of the orbit, whereby the diagram says �winter�, the Northernhemisphere is tilted far from the sun.The southern hemisphere is tilted toward the sun. This time, the south gets an ext direct raysthan the North, so the is winter in the North and summer in the South.

During spring and fall, no hemisphereis tilted an ext toward the Sun. Directrays hit just at the dry zones close to the equator.

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Indirect rays hit pretty lot everywhereelse. Thus we have actually mildtemperatures in the north and also south away from the equator.