Atmosphere MCQ Question and Answer | Geography MCQ Question

The following that are true regarding ionosphere are The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized and This layer is responsible for reflecting back the radio wave transmitted from the earth.

Gases of the atmosphere in increasing order by volume are Carbon dioxide, Argon, Oxygen and Nitrogen.

Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect.

Local thunderstorms 'Nor westers' are prominent in West Bengal. Kalbaishakhi is a local rain fall and thunder storm. They generally move from West to East.

A hurricane is a type of storm called a tropical cyclone, which forms over tropical or subtropical waters. Only tropical cyclones that form over the Atlantic Ocean or eastern Pacific Ocean are called "hurricanes."

If the water vapor content stays the same and the temperature rises, the relative humidity decreases. This is because colder air doesn't require as much moisture to become saturated as warmer air.

Sleet occurs when snowflakes melt into a raindrop in a wedge of warm air well above the ground and then refreeze in a layer of freezing air just above the surface. This results in frozen raindrops, or small ice pellets.

The term used for the zone at low pressure and light and variable winds in the oceanic equatorial regions is Depression. Depressions, sometimes called mid-latitude cyclones, are areas of low pressure located between 30 and 60 latitude.

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. They originate from the high-pressure areas in the horse latitudes and trend towards the poles and steer extratropical cyclones in this general manner.Tropical cyclones which cross the subtropical ridge axis into the westerlies recurve due to the increased westerly flow. The winds are predominantly from the southwest in the Northern Hemisphere and from the northwest in the Southern Hemisphere.

Absolute humidity (units are grams of water vapor per cubic meter volume of air) is a measure of the actual amount of water vapor in the air, regardless of the air's temperature.