Definitions
Rain
Moisture condensed from the atmosphere that falls visibly in separate drops.
When air is hot, the molecules are ________ apart.
farther
Air is another...
word for atmosphere.
Air is required for ___________, animal, and _________ survival
human;plant
_________ is the study of the Earth’s atmosphere.
Meteorology
Evaporation is...
the process in which a liquid turns into a vapor.
As the air rises, it ___________. When air is cool, the molecules are ___________ together.
cools down; closer
Polluted air is...
the result of gases, such as ozone and carbon monoxide, ash, and smoke.
Closer to the Earth’s surface, the air is ________. The Sun’s heat warms the air, so it _____________.
warmer;rises
The Water Cycle consists of Evaporation, Condensation, and _________________
Precipitation
Condensation is...
the process in which a vapor turns back into a liquid.
Cirrostratus: high cloud; thin, covers the ________ sky; __________ from the Sun and Moon can be seen through them; seen 12-24 hours prior to a snow or rain storm.
entire; light
Humidity is...
a quantity representing the amount of water vapor in the atmosphere
Cool air is not as ______ or _______ as hot air. Since the cooler air is “heavier”, it sinks.
dense; light
The _________ of evaporation is ___________.
opposite; condensation.
Air Pressure is...
force exerted onto a surface by the weight of the air
___________, thunderstorms, __________, and even breezes are the result of the cycle of rising warm air and the sinking cool air.
Tornados; hurricanes
Wind
The perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction.
The water ________________ are very light that they can float in the air.
droplets/ice pellets
Condensation occurs when the _______________.
the atmosphere is saturated (full of water).
Altostratus clouds are...
mid-level cloud; gray or blue; made of water vapor and ice; cover the entire sky; some light can get through; sign of continuous rain or snow
Cumulus white and puffy; indicate ____________; flat base and rounded towers; can develop into cumulonimbus clouds
fair weather;cumulonimbus clouds
Fog
A thick cloud of tiny water droplets suspended in the atmosphere at or near the Earth's surface that obscures or restricts visibility.
Stratocumulus: light, gray, and puffy; form in rows; can see parts of the sky between the clouds; can turn into __________.
nimbostratus clouds
Water vapor that is in ________________________.
the air is known as humidity.