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Because the earth rotates and each part is illuminated as it turns 'toward' the sun and because the earth moves around the sun that's why.

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Is half the moon always in the sunlight?

Yes. Exactly like the earth. Both of them are half-illuminated by the sun. You can understand why half can see the sun and the other half can't, if you think about what you can do with a tennis ball and a flashlight in a dark room.


What part of earth has night at the same time?

Half the Earth is light, the other half is dark. Anywhere on the dark half experiences night.


At any one time half of the earth has sunlight?

This phenomenon occurs due to the Earth's rotation on its axis, creating day and night cycles. As the Earth rotates, different parts of the planet are exposed to sunlight while others are in darkness. This results in approximately half of the Earth having sunlight at any given moment.


Why is one half of earth alway dark?

Half of the earth is always dark because the Earth is opaque and the side facing the sun blocks sunlight from reaching the other side of the Earth. If we were in a star system with multiple stars we might have a chance of having more than half of the surface of the Earth illuminated but as we only have the one sun we will always have day and night. Note that strictly speaking the dark side of the earth is not totally dark - it gets some reflected light from the moon most of the time and a tiny bit of light from the stars, not to mention all the anthropogenic light sources that get switched on at night.


How much of earth is in sunlight when a autumnal equinox occurs?

Half of Earth is illuminated by the sun at all times.


How much of earth is exposed to sunlight?

At any given time, half (50%) of Earth is exposed to sunlight.


How much of the moon is always in the dark?

The moon is always half dark. The half facing the sun is light, the other half is dark.However, during a lunar eclipse, the moon would be temporarily all dark since it is in the shadow of the earth.


What country on earth gets the sunlight first?

Since the sun only shines on one side of the Earth at a time, one half of the Earth is in darkness and the other half in sunlight. It is only as the sun rotates on it's axis that different areas of the Earth experience night and day. A country never gets sunlight "first", as the night and day around the Earth is constantly changing.


Is sunlight always shining on half of Earth?

Sunlight is always shining on one half of the Earth as the planet rotates on its axis, causing day and night. This rotation creates a cycle of 24 hours with half of the globe facing the sun ("day side") and the other half facing away from it ("night side").


Why is one side of the moon called the dark side?

It's not. The moon is always half light and half dark, but it's not always the same places. -- Take a soccer ball and a flashlight into a dark room. -- Turn on the flashlight, and point it at the soccer ball. -- Half of the ball is lit up, and the other half is dark. -- No matter how you turn the ball, no matter how quickly you move or which way you bend, no matter how you manipulate the flashlight, no matter how much you wiggle and dance ... 50% of the surface of the ball is lit up, and the remaining 50% of its surface is dark. -- 50% of the Earth is lit up, and the remaining 50% of it is dark. The light and dark places keep changing, but the Earth is always half light and half dark. -- 50% of the Moon is lit up, and the remaining 50% of it is dark. The light and dark places keep changing, but the Moon is always half light and half dark.


How nighttime and daytime relates with the sun?

because when the sun is facing one side of the Earth it is daytime when there is no sunlight facing the other half of the Earth it is nighttime.


Why the visible moons shape changes?

Only the half of the moon that is illuminated by sunlight will be visible; the other half is dark. Because the relative positions of the Earth, moon, and sun are always changing, the viewer on Earth will see varying amounts of the illuminated half of the moon.