Question
How do day and night occur on the earth? Explain with the help of a diagram.
Answer
The earth completes one rotation in about 24 hours. So, the earth faces the sun while rotating from west to east. Each part of the earth facing the sun, is illuminated by sunlight turn by turn. The lighted half part of the earth that faces the sun has day. While the other part of the earth that is not facing the sun, experiences night.
day and night diagram