Atmosphere MCQ Question and Answer | Geography MCQ Question

Rain caused by vertical circulation of air currents - orographic rainfall is wrongly matched. Orographic precipitation, rain, snow, or other precipitation produced when moist air is lifted as it moves over a mountain range. As the air rises and cools, orographic clouds form and serve as the source of the precipitation, most of which falls upwind of the mountain ridge.

Pampero is the name for a severe line squall that occurs over the Pampas of Argentina and Uruguay. A pampero event marks the passage of a cold front and often brings a considerable drop in temperature. The Pampero is usually accompanied by very humid and close conditions, severe rain, hail and thunderstorms and is followed by a cold, dry, gusty, southerly or south-westerly wind.

streams travel in the tropopause. Jet streams are some of the strongest winds in the atmosphere. Their speeds usually range from 129 to 225 kilometers per hour (80 to 140 miles per hour), but they can reach more than 443 kilometers per hour (275 miles per hour).

In the earth's atmosphere, the atmospheric pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.

When a descending air contracts and thus its volume decreases but its temperature increases.

All forms of precipitation converted to the quantity of liquid water is the annual precipitation of an area. Precipitation is any form of water that falls from the sky. Evidently, any precipitation develops in Earth’s atmosphere and then falls to the surface, usually as rain.

When relative humidity approaches 100%, condensation can occur on surfaces. The relative humidity is 100% when the dew point and the temperature are the same. If the temperature drops any further, condensation will result, and liquid water will begin to form.

The air may or may not be warm. Most of the condensed water in clouds does not fall as precipitation because their fall speed is not large enough to overcome updrafts which support the clouds. For precipitation to happen, first tiny water droplets must condense on even tinier dust, salt, or smoke particles, which act as a nucleus.

Transfer of surplus heat from the lower latitudes to higher latitudes is done by ocean currents and planetary winds.

The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from Ionosphere. The aurora borealis of the Northern Hemisphere is often called the northern lights, and the aurora australis of the Southern Hemisphere is known as the southern lights. Each is visible over an area centering around the geomagnetic pole of its own hemisphere.