Show:
Understanding Weather
Clouds and Fog
Precipitation
Air Masses
Miscellaneous
100
The study of weather and of the atmospheric conditions that produce weather.
What is meteorology?
100
This type of cloud forms a flat, gray layer of heavy clouds not far above the ground.
What is stratus?
100
Precipitation made of ice crystals that fall to the ground.
What is snow?
100
This type of air mass brings cool, wet weather.
What is Maritime polar?
100
When the temperature of air rises, relative humidity will ____________?
What is decrease?
200
The year-round atmospheric conditions of a certain place.
What is climate?
200
A mixture of smoke and fog.
What is smog?
200
Rain that freezes before it hits the ground.
What is sleet?
200
This type of front forms when a warm air mass moves into a region occupied by a cold air mass.
What is warm front?
200
A low that forms along a front.
What is frontal cyclone?
300
The process of a liquid becoming a gas.
What is evaporation?
300
White, billowy clouds that resemble piles of cotton puffs.
What is cumulus?
300
Layered balls of ice.
What is hailstone?
300
This type of air mass brings warm, moist weather.
What is Maritime tropical?
300
A substance going from a solid to a liquid.
What is melting?
400
The ratio comparing the actual humidity to the humidity of saturated air under the same conditions.
What is relative humidity?
400
This type of fog is found along the slopes of mountains.
What is upslope fog?
400
Drops of liquid that have a diameter of 0.5mm or greater and fall from the clouds to the earth.
What is rain?
400
This type of front forms when two air masses push against each other but neither advances.
What is stationary front?
400
Ice crystals in clouds that grow large enough to fall to the ground.
What are snowflakes?
500
Airborne water vapor cannot turn into liquid without a small particle called a _____________?

What is condensation nuclei ?

500
A thick, brownish haze that results from complex molecules released into the air by vehicles and some factories and plants.
What is photochemical smog?
500
A drought based on a water shortage's effect on people.
What is socioeconomic drought?
500
This phenomenon occurs when an air mass remains stationary over a region for a long time.
What is air-mass weather?
500
An air mass that brings very cold and dry weather.
What is Arctic?
600
Water vapor in the air that touches the cooler ground and turns to a liquid.
What is dew?
600
The most frequent type of cloud.
What is stratocumulus? 
600
A drought that occurs when precipitation cannot supply enough moisture to the ground to support an area's crops.
What is agricultural drought?
600
A large body of air with relatively uniform properties.
What is air mass?
600
The three factors that affect the density of an air mass are _________, __________, and ___________.
What is temperature, humidity, and pressure?
700
Water vapor in the air that touches the ground and turns to ice.
What is frost?
700
An almond shaped cloud. 
What is lenticular cloud?
700
Snowflakes with white, feathery branches forming a leaf or star shaped pattern.
What is dendrite?
700
This type of front forms a Y shape.
What is occluded front?
700
The three major factors that determine the earth's weather are _______, _______, and __________?
What is heat energy, uneven distribution of heat energy, and water vapor?