Why we have day and night

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why we have day and night

Day And Night Quotes (17 quotes)

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Published 11.12.2018

Lord Huron - The Night We Met

Day and night

Daytime is when you can see the sun from where you are, and its light and heat can reach you. We get day and night because the Earth spins or rotates on an imaginary line called its axis and different parts of the planet are facing towards the Sun or away from it. It takes 24 hours for the world to turn all the way around, and we call this a day. Over a year, the length of the daytime in the part of the Earth where you live changes. Days are longer in the summer and shorter in the winter.

Our new enquiry aims to look at the Science behind day and night, looking at Space and considering time zones in different places. Use the links below to do some of your own research.
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StarChild Question of the Month for March 2001

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For most of here on planet Earth, sunrise, sunset, and the cycle of day and night aka. As a result of seasonal changes that happen with every passing year, the length of day and night can vary — and be either longer or shorter — by just a few hours. But in some regions of the world i. And there are also seasonal periods where a single night can last many days. Naturally, this gives rise to certain questions. As with many other seasonal experiences, the answer has to do with two facts: One, the Earth rotates on its axis as it orbits the Sun.

Answer: Clearly, when you see the Sun shining in the sky, it is day, and when you don't it is night. So the real question is "why is the Sun in the sky at some times and not at others? How does this happen? Long ago, people believed many weird things about the Sun and how it traveled across the sky. The ancient Greeks believed that the Sun rode across the sky in a chariot drawn by four white horses driven by the god Heleius! These days, we know that the Sun appears to move across the sky because the Earth rotates on its axis.

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