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How does the sun appear to move across the sky?

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by

Stephanie Park

on 12 June 2014

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Transcript of How does the sun appear to move across the sky?

The sun appears to move across of the sky but in fact it never moves its the earth that moves. The earth spins on its axis.

It's because the earth spins on an axis, while moving around the sun. When it spins will make it look like the sun is moving across the sun.
Day or Night?
The Earth is always spinning it never stops. In each day there is 24 hours, 12 hours when its light and 12 hours when its dark. This is due to the earth spinning on its axis the earth moves round the sun whilst spinning but the sun never moves. So when one side of the earth is facing the sun it gives light to the side of the earth that is facing it making it daylight on that side of the earth and the side of the earth that faces away from the sun is in darkness making it night
Solar and Lunar Eclipse
A solar eclipse occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks the Sun.

A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun, Earth, and Moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle. Hence, a lunar eclipse can only occur the night of a full moon.
Why does it feel hotter in the Summer?
If you are out in sunlight in the summer it feels hotter than in the winter. The Sun itself hasn't changed so why is this?

This effect is caused by the Earth's atmosphere. When the Sun is lower in the sky, the sunlight has to travel through a thicker layer of the Earth's atmosphere than when it is higher in the sky. This extra thickness of atmosphere absorbs some of the radiation from the Sun and makes it feel less strong.
How does the sun appear to move across the sky?
By Steph and Ellie

7A
Mr Mackley

Do we really need clocks?
Before clocks were invented, people used to tell the time using the sun. It is simple, the higher the sun is above you the closer it is to midday. If the sun is coming from the east its rising, if its coming from the west, its setting.
Space
Why do planets appear to be brighter than stars?

Planets seem brighter than stars because they are closer to us (the Earth) therefor they reflect more light.
The Milky Way
The Milky Way is the galaxy that contains our Solar System. Its name “milky” is derived from its appearance as a dim glowing band arching across the night sky in which the naked eye cannot distinguish individual stars.
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