Weather Flashcards
(25 cards)
Humidity
a quantity representing the amount of water vapor in the atmosphere or in a gas.
Cumulus Cloud
puffy clouds that sometimes look like pieces of floating cotton.
Stratus Cloud
low-level layers with a fairly uniform grey or white colour.
Cirrus Cloud
short, detached, hair-like clouds found at high altitudes.
Cumulonimbus Cloud
menacing looking multi-level clouds, extending high into the sky in towers or plumes
Condensation
water which collects as droplets on a cold surface when humid air is in contact with it.
Evaporation
the process of turning from liquid into vapor.
Precipitation
rain, snow, sleet, or hail that falls to the ground.
Runoff
a further competition, election, race, etc., after a tie or inconclusive result.
Rain
moisture condensed from the atmosphere that falls visibly in separate drops.
Sleet
a form of precipitation consisting of ice pellets, often mixed with rain or snow.
Snow
atmospheric water vapor frozen into ice crystals and falling in light white flakes or lying on the ground as a white layer.
Hail
pellets of frozen rain which fall in showers from cumulonimbus clouds.
Polar – Maritime Airmass
Polar maritime is the most common air mass to affect the British Isles
Tropical – Maritime Airmass
warm and moist in its lowest layers
Polar – Continental Airmass
Continental polar (cP) or continental arctic (cA) air masses are cold, dry, and stable.
Tropical – Continental Airmass
a type of tropical air produced by the subtropical ridge over large areas of land and typically originate from low-latitude deserts such as the Sahara Desert in northern Africa,
Cold Front
the leading edge of a cooler mass of air at ground level that replaces a warmer mass of air and lies within a pronounced surface trough of low pressure
Warm Front
the boundary between a mass of warm air and a retreating mass of cold air.
Thunderstorm
A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning and its acoustic effect on the Earth’s atmosphere, known as thunder.
Lightning
a giant spark of electricity in the atmosphere between clouds, the air, or the ground.
Thunder
a loud rumbling or crashing noise heard after a lightning flash due to the expansion of rapidly heated air.
Tornado
a mobile, destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system.
Hurricane
a tropical storm with winds that have reached a constant speed of 74 miles per hour or more.