Clouds
Clouds that form at low altitudes with a top that resembles cotton balls
Cumulus Clouds
A mixture of gasses, primarily nitrogen, oxygen, and argon, that surrounds Earth
Atmosphere
Prevailing winds that blow from East to West from 30ﾟ latitude to the equator in both hemispheres
Trade Winds
An instrument that measures and indicates temperature
Thermometer
An air mass that originates in southern Atlantic Ocean, Caribbean Sea, Gulf of Mexico, or Pacific Ocean and brings warm, moist air
Maritime Tropical
Clouds that have the highest altitude of any cloud in the sky
Cirrus
The coldest layer of the atmosphere in which temperature decreases as altitude increases
Mesosphere
Prevailing winds that blow from West to East between 30ﾟ and 60ﾟ latitude in both hemispheres
Westerlies
An instrument used to determine the direction of the wind
Wind Vane
An air mass that originates in North Atlantic and North Pacific areas and brings cold, moist air
Maritime Polar
Clouds that cover large areas of sky and often block out the sun
Stratus
The lowest layer of the atmosphere where temperature drops at a constant rate as altitude increases, the level where all weather conditions exist
Troposphere
Prevailing winds that blow from East to West between 60ﾟ and 90ﾟ latitude and both hemispheres
Polar Easterlies
An instrument used to measure wind speed
Anemometer
An air mass that originates in Canada and brings cold, dry air
Continental Polar
The process of combining small cloud droplets into large droplets
Coalescence
The uppermost layer of the atmosphere; includes the ionosphere
Thermosphere
The 3 looping patterns of air flow that exist in each hemisphere
Convection Cells
An instrument that measures atmospheric pressure by registering changes in the level of mercury inside a tube
Exosphere
An air mass that originates in U.S. southwest and brings warm, dry air
Continental tropical
The process of introducing condensation nuclei into a cloud
Cloud Seeding
The layer of the atmosphere in which temperature increases as altitude increases; contains the ozone layer
Stratosphere
The curving of the path of a moving object from an otherwise straight path due to Earth's rotation
Coriolis Effect
An instrument that measures atmospheric pressure
Barometer
An area of low pressure, rotating wind that moves toward the rising air of the central low-pressure system
Mid-latitude Cyclone