The circle that divides the day from night on the globe is called-

Correct option is A

The circle of illumination is the imaginary line on the Earth's surface that separates the area experiencing daylight from the area in darkness. This line represents the division between day and night on the globe.
It is caused by the rotation of the Earth on its axis and the direction of sunlight. Since the Earth is a sphere, only one-half of it is illuminated by the Sun at any given time, while the other half remains in darkness. The position of the circle of illumination changes slightly throughout the year due to the tilt of the Earth's axis and its elliptical orbit around the Sun.
The circle of illumination is not aligned with the Equatorial circle (the imaginary line dividing the Earth into the Northern and Southern Hemispheres) but shifts according to the Earth's axial tilt during different seasons.
Information Booster:
· The circle that separates day from night on the globe is known as the Circle of Illumination.
· This imaginary line does not align with the Earth's axis.
· During the spring and autumnal equinoxes, the circle of illumination divides all latitudes equally into day and night.
· It is tilted at an angle of 23.5° relative to the Earth's axis.
Additional Knowledge:
Equatorial Circle:
· The equatorial circle is an imaginary line dividing the Earth into the Northern and Southern Hemispheres.
· Unlike the circle of illumination, it does not change with the seasons.
Elliptical Orbit:
· Refers to the shape of the Earth's orbit around the Sun, which is an ellipse.
· It affects the Earth's distance from the Sun during different times of the year but is not related to the division of day and night.
Summer Solstice:
· Occurs around June 21 when the Northern Hemisphere experiences the longest day of the year due to the Sun's position directly over the Tropic of Cancer.
· It is a seasonal event and not the division between day and night.