SOLAR SYSTEM

Detailed explanation-1: -Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term ‘one day’ is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.

Detailed explanation-2: -As the Earth moves around the Sun it rotates on its axis, so we have day and night. The side of the Earth facing the Sun is bathed in light and heat (daytime). The side of the Earth facing away from the Sun, out towards space, is darker and colder (nighttime).

Detailed explanation-3: -The earth revolves around the sun and rotates around its own axis. The rotation of the earth causes day and night. The part of the earth which faces the sun experiences the daytime whereas the part away from the sun gets no sunlight and hence the night. The axis of the earth’s rotation is tilted at 23.5 degrees.

Detailed explanation-4: -Earth rotates because Sun attracts the earth and thus pulls earth towards it secondly due to earths revolution around sun it tends to go away from sun in direction of the tangent hence a rotational force (torque) acts on earth and it tends to rotate.