Atmosphere MCQ Question and Answer | Geography MCQ Question

The following that are correct in matching the layer of atmosphere and its characteristic are Troposphere : weather phenomena, Stratosphere : ozone layer and Ionosphere : radio waves reflected to earth's surface.

Jet Streams have high velocity wind, it blow from west to east and it blow in upper troposphere near the tropopause.

High-speed and dangerous dry winds that periodically kick up and blow from the mountains to the coast in Southern California are referred to as Santa Ana winds.

In the northern hemisphere, the convergence of the winds with Coriolis effect at low pressure center leads to cyclonic/anticlock-wise rotation in the cyclones.

The winds blowing throughout the year from one latitude to another in response to latitudinal differences in air pressure are called “planetary or prevailing winds”. The westerlies, anti-trades or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30° and 60° latitude.

The sequences of clouds in ascending order would one meet 500 metres and above the mean sea level are Stratus, Nimbus, Cirrostratus, Cirrus.

If the reading is going down very fast then its an indication of storm (within 5-6 hours) otherwise a slow downfall of reading suggests a low pressure area is passing in a nearby region, and it may rain.

The actual amount of the water vapour present in the atmosphere is known as the absolute humidity. It is the weight of water vapour per unit volume of air and is expressed in terms of grams per cubic metre. The absolute humidity differs from place to place on the surface of the earth.

Option A: The sky is overcast with clouds
This option is partly correct. Precipitation is more likely to occur when the sky is overcast with clouds, as clouds contain water droplets or ice crystals that can fall as precipitation when they become heavy enough.

Option B: Temperature of moisture in air suddenly increases
This option is not correct. An increase in temperature typically leads to the evaporation of moisture rather than precipitation.

Option C: Temperature of moisture in air sharply decreases
This option is partly correct. Precipitation often occurs when the temperature of moist air decreases, causing the air to reach its dew point and water vapor to condense into liquid or ice, forming precipitation.

Option D: Winds begin to blow in a circular motion
This option is not correct. The circular motion of winds is associated with weather phenomena like cyclones or hurricanes but is not the primary cause of precipitation.

Therefore, the most accurate options related to precipitation are a combination of Option A (The sky is overcast with clouds) and Option C (Temperature of moisture in air sharply decreases). Precipitation often occurs when the sky is cloudy and the temperature of moist air decreases, leading to condensation and the formation of precipitation.

Temperate cyclones bring along with them mild rainfall. Temperate Cyclones also called mid-latitudinal cyclones or extra tropical cyclones are formed due to interaction of air masses of different temperature.