How are Earth's seasons determined?

Earth's position in relation to the sun.

What causes morning and evening twilight?

Scattering of the sun's rays in the atmosphere.

Influences the length of twilight.

Due to the Earth's revolution around the sun.

The rotation of the Earth causes day and night by exposing one side to sunlight and the other to darkness, creating twilight periods due to light scattering in the atmosphere, impacting the length of twilight based on Earth's rotation speed and location.
Earth's seasons are dictated by its tilt of 23.5°, affecting lighting and climate changes, resulting in varying sunlight distribution and solstices on June 21st and December 21st, when day and night are equal worldwide.

What causes day and night?
Earth's rotation on its axis.
How are Earth's seasons determined?
Earth's position in relation to the sun.
What causes morning and evening twilight?
Scattering of the sun's rays in the atmosphere.
How does the Earth's rotation speed affect twilight?
Influences the length of twilight.
Why does the northern hemisphere receive more sunlight in summer?
Due to the Earth's revolution around the sun.

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The rotation of the Earth on its axis creates day and night, with one side always illuminated by the sun and the other in darkness, leading to the occurrence of morning and evening twilight due to the scattering of the sun's rays in the atmosphere, influencing the length of twilight based on the Earth's rotation speed and location on the planet.
The Earth's seasons are determined by its position in relation to the sun, with the planet's axis being inclined at approximately 23.5°, resulting in different lighting conditions and climate changes, where the northern hemisphere receives more sunlight during its summer due to the Earth's revolution around the sun, leading to solstices on June 21st and December 21st when day and night are equal in length globally.