Name: Solstice and Equinox
Uploaded: 2019-07-19
Duration: 6 min 45 s
Description: We all have experienced differences in day and night during specific periods of the year. What is the reason behind this? Let's find out!

Question

How are alternate days and nights caused by the rotation of the Earth?

Accepted Answer

The rotation of the Earth is responsible for the alternation between day and night in the following ways:

The Earth rotates on its axis, this rotation takes approximately $24$ hours to complete, resulting in one day.

As the Earth rotates, different parts of it are either facing towards the Sun or facing away from it.

When a specific region of the Earth is facing towards the Sun, that region experiences daylight, which is known as daytime. During this period, the Sun's rays directly illuminate the surface of the Earth in that region.

Conversely, when a region is facing away from the Sun, it experiences darkness, which is known as nighttime. During this period, the Sun's rays do not reach the surface of the Earth in that region, resulting in darkness.

	$21$ June	$23$ September	$22$ December	$21$ March
Northern Hemisphere	faces the Sun			has spring
Southern Hemisphere		has spring

How are alternate days and nights caused by the rotation of the Earth?

Important Questions on Motions of the Earth

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