Houses in Rajasthan have thick walls and flat roofs. The thick walls do not allow the heat to get into the houses while the flat roofs help to retain the little water that comes as rain in the desert.

The houses in Tarai region, Goa and Mangalore have sloping roofs so that the rainwater due to heavy rains in these area flow off the roof.

The houses are built on stilts in Assam as there is danger of floods and wild animals in large areas of Assam.

Most of the world’s deserts are located in the western margins of continents in the subtropics because trade winds that blow in the region shed their moisture on the eastern side.They become dry by the time they reach the western margin of the continent. Cold ocean currents also tend to stabilise the air over the coast and inhibit cloud formation.

Which of the following places receives the highest rainfall ?
(a) Guwahati
(b) Mawsynram
(c) Kolkata
(d) None of these
ANS (b) Mawsynram

The wind blowing in the northern plains in summers is known as:
(a) Kaalbaisakhi
(b) Loo
(c) Trade winds
(d) None of the above
ANS (b) Loo

Which one of the following causes rainfall during winters in northwestern part of India?
(a) Cyclonic depression 
(b) Retreating monsoon
(c) Western disturbances 
(d) Southwest monsoon

ANS (a) Cyclonic depression

Monsoon arrives in India approximately in:
(a) Early May
(b) Early July
(c) Early June
(d) Early August
ANS (c) Early June