EARTH SCIENCE
NATURAL HAZARDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A place on the Earth where cold air is moving into a new area
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when cold air has just past a day a go
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Warm air moving to another area
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warm air that already passed
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Detailed explanation-1: -A cold front occurs when a mass of comparatively colder air moves into where warmer air is present. The drier, colder air forms a steeply sloping boundary under the warmer, moister air at the surface and lifts that air.
Detailed explanation-2: -It is also known as a “dryline” or “dry front". Front. A boundary or transition zone between two air masses of different density, and thus (usually) of different temperature. A moving front is named according to the advancing air mass, e.g., cold front if colder air is advancing.
Detailed explanation-3: -As a cold front moves into an area, the heavier (more dense) cool air pushes under the lighter (less dense) warm air, causing it to rise up into the troposphere. Lifted warm air ahead of the front produces cumulus or cumulonimbus clouds and thunderstorms. As the cold front passes, winds become gusty.
Detailed explanation-4: -A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. Cold fronts generally move from northwest to southeast. The air behind a cold front is noticeably colder and drier than the air ahead of it.