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Rotation and Revolution — Geography STD 9 — Question

ICSE BoardEnglish MediumSTD 9GeographyRotation and Revolution4 Marks
Question
What are the effects of rotation?
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Answer

(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.

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