World Geography - Study Mode
[#76] The tropical cyclones with maximum sustained surface winds of 33 ms are called
Correct Answer
(C) hurricane
Explanation
Solution: Severe tropical cyclones have near surface sustained wind speeds equal to or exceeding 33 m/s (120 km/h): these are called hurricanes over the Atlantic Ocean, the East Pacific Ocean and the Caribbean Sea, and Typhoons over the Western North Pacific Ocean
[#77] The typical soil of tropical region, formed by the weathering of laterite rock, which promotes leaching of the soil is
Correct Answer
(A) laterite soils
Explanation
Solution: Laterite is a soil and rock type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by intensive and prolonged weathering of the underlying parent rock.
[#78] The two 'equinoxes' take place respectively in the months of
Correct Answer
(C) March and September
Explanation
Solution: An equinox is commonly regarded as the instant of time when the plane (extended indefinitely in all directions) of Earth's equator passes through the center of the Sun. This occurs twice each year, around 20 March and 23 September.
[#79] The troughs of the waves are where the jet stream of waves is closest to the
Correct Answer
(B) equator
Explanation
Solution: The troughs of the waves are where the jet stream of waves is closest to the equator.
[#80] The tropical cyclones do not occur to the equator because of
Correct Answer
(A) weak coriolis force
Explanation
Solution: At the equator the Coriolis force is absent(Coriolis force is directly proportional to latitudinal angle), and the wind will blow perpendicular to the isobar.