The line joining the areas having the same rainfall is called:
- A.Isobar
- B.Isohyet
- C.Isotherm
- D.Isohaline
Correct answer
Explanation
The correct answer is B, isohyet. An isohyet is a line drawn on a map through all the places that receive the same amount of rainfall in a given period. Rainfall maps of India are drawn with isohyets, and the crowding of these lines along the Western Ghats shows how sharply rainfall falls from the windward coast to the rain shadow of the plateau.
Option A, an isobar, joins places of equal atmospheric pressure and is used on weather charts to locate depressions and anticyclones. Option C, an isotherm, joins places of equal temperature and is used on temperature maps. Option D, an isohaline, joins places of equal salinity and belongs to the study of the oceans. All four terms carry the Greek prefix iso, meaning equal, and examiners rely on a candidate confusing them.
Read the full article: Climate and Rainfall of India: Monsoon, Seasons and PYQs
Practice Questions
View allWhat causes rainfall on the coastal areas of Tamil Nadu in the beginning of winters?
- A.North-Eastern Monsoon
- B.Local Air Circulation
- C.Temperate Cyclones
- D.South-West Monsoon
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As the monsoon retreats in October and November the wind direction reverses and air moves from the land towards the sea.
Read the full explanation →In which state of India is the rain caused by a lightning storm called Cherry Blossom?
- A.Gujarat
- B.Meghalaya
- C.Uttarakhand
- D.Karnataka
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The pre-monsoon thundery showers of Karnataka are called cherry blossom showers or blossom showers because they help the coffee plants of the Kodagu, Chikkamagaluru and Hassan belt to flower.
Read the full explanation →In India, during October-November, with the apparent movement of the sun towards the south, the ______ over the northern plains becomes weaker.
- A.Upper level trough
- B.Monsoon trough
- C.Lee trough
- D.Inverted trough
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The monsoon trough is the belt of low pressure that lies across the northern plains during the rainy season and guides the depressions that bring rain.
Read the full explanation →Which of the following pairs of type of climate and area is NOT correct? I. Semi-arid steppe climate - Punjab. II. Monsoon with dry summer - Coromandel coast of Tamil Nadu.
- A.Only I
- B.Neither I nor II
- C.Only II
- D.Both I and II
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In the Koeppen classification as applied to India, the semi-arid steppe climate marked BShw covers parts of Punjab, Haryana, western Uttar Pradesh and the drier interior of the peninsula, where rainfall is low but not as low as in a true desert.
Read the full explanation →The south-west monsoon normally reaches the coast of Kerala on about which date?
- A.1 April
- B.1 May
- C.1 June
- D.1 July
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The south-west monsoon normally sets in over the Kerala coast about the first of June, and the sudden heavy downpour that marks its arrival is called the burst of the monsoon.
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