What causes day and night?
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Q:

What causes day and night?

A:

Quick Answer

The Earth is constantly spinning on its axis, allowing sunlight to shine on different areas of the Earth at different times of the day, creating daytime when the Sun hits a specific area. When the Sun is not shining on a specific area of the Earth, it is nighttime. Since the Sun does not hit all of the Earth at the same time, it is daytime in some parts of the world, while it is nighttime in others.

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Full Answer

This phenomenon also explains the seasons. The part of the Earth tilted toward the Sun experiences summer. Winter occurs in the part of the Earth that is tilted away from the Sun.

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Related Questions

  • Q:

    Why do seasons occur?

    A:

    Seasons occur on Earth because the planet is tilted on its axis at just over 23 degrees. Both the Southern Hemisphere and the Northern Hemisphere are tilted closer to the sun as the planet completes a full orbit.

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  • Q:

    What is the angular velocity of Earth?

    A:

    The angular velocity of the Earth around its axis is 0.000417 degrees per second. The angular velocity of the Earth around the sun is 0.986 degrees per day.

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  • Q:

    What causes the different seasons on Earth?

    A:

    The Earth's tilt on its axis with respect to its orbital plane is the cause of the different seasons experienced annually. When the Earth is tilted toward the sun, it causes the summer season in that particular hemisphere. Winter is consequently caused by the Earth titling away from the sun.

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  • Q:

    Why do we have day and night on earth?

    A:

    Day and night on Earth are caused by the planet's rotation around its axis and its position relative to the Sun. The Earth rotates from west to east, so places further east experience daybreak and nightfall sooner. One hemisphere of Earth is in daylight at any given time.

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