Rotation : The spinning of the Earth on its axis from West to East is called rotation. The Earth takes about 24 hours (23 hours 56 minutes 4 seconds) to complete one rotation. It is also known as daily motion of the Earth.
Effects :
(a) Rotation causes days and nights.
(b) All heavenly bodies like Sun, Moon, planets appear to move from East to West.
(c) Tides occur regularly twice a day.
(d) Winds and ocean currents change their directions.
(e) The four main directions (North, South, East, West) can be determined with the help of rotation.
(f) We get a measure of time. A day consists of 24 hours – one complete rotation.
(g) The different times of a day like sunrise, noon, sunset, midnight can be determined due to rotation.
