EVERYDAY SCIENCE

Detailed explanation-1: -The Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours. 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: -Aryabhatta, a mathematician and astronomer, wrote Aryabhatiyam. He stated that day and night were caused by the rotation of the earth on its axis. He developed a scientific explanation for eclipses. He also found a way of calculating the circumference of a circle.

Detailed explanation-3: -The rotation of the Earth on its axis causes day and night. As the Earth rotates, only one-half of the Earth faces the sun at any given time. The half facing the sun is light (day) and the half facing away from the sun is dark (night).

Detailed explanation-4: -The earth’s spin axis is tilted with respect to its orbital plane. This is what causes the seasons. When the earth’s axis points towards the sun, it is summer for that hemisphere. When the earth’s axis points away, winter can be expected.

Detailed explanation-5: -During rotation, the surface of the earth that faces the sun receives sunlight and have daytime. The other part which is facing away from the sun, have night time.