Universe and Solar System - World Geography quiz 1 is a free online quiz challenge under Universe and Solar System - World Geography category. There are 121 free online quiz challenges available in World Geography category
Assertion (A) Decay and disintegration or rock in situ is called weathering.Reason (R) mechanical weathering is mainly caused by temperature variation.
Assertion (A) The planet Neptune appears blue in colour.Reason (R) The presence of methane gas in the atmosphere of Neptune is responsible for its colour.
Assertion (A) Comets revolve round the Sun only in long elliptical orbits.Reason (R) A comet develops a tail when it gets close to the Sun.
Assertion (A) Venus is the brightest object in the sky after the Sun.Reason (R) Venus is the second planet form the Sun in our Solar System.
Assertion (A) The smog is mainly formed during day time having clear sky and pollution free atmosphere.Reason (R) The UV rays of sunlight catalyses the reaction of NO2, hydrocarbons etc contained polluted air.
Assertion (A) The thickness of the atmosphere is maximum over the Equator.Reason (R) High isolation and strong convection currents occur over the Equator.
Assertion (A) Anticyclone, which is a high pressure wind system, does not bring about significant change in weather condition.Reason (R) The outward movement of wind from the high pressure center keeps limited scope for disturbance.
Assertion (A) Within the mesosphere, temperature decreases with increasing altitudeReason (R) This is due to decreasing solar heating and increasing cooling by CO2 radiative emission.
Assertion (A) Because of the Sun's UV radiation, Earth's upper atmosphere is partly (0.1% or less) ionised plasma at altitudes of 70-1500 km.Reason (R) This region, ionosphere, is a coupled to both the magnetosphere and the neutral atmosphere.
Assertion (A) Within the mesosphere, temperature decreases with increasing altitude.Reason (R) This is due to decreasing solar heating and increasing cooling by CO2 radiative emission.