Show:
Atmosphere
Water Cycle
Clouds
Fronts
Odds and Ends
100
About 99% of air is composed of oxygen and this gas.
What is Nitrogen?
100
The water cycle circulates water in this layer of the Earth's atmosphere.
What is the Troposphere?
100
Small particles in the air around which water vapor condenses.
What is dust?
100
A front is a boundary between two of these.
What is an air mass?
100
Weather associated with a low-pressure system.
What is rainy or stormy weather?
200
The amount of this gas in the air varies depending on the humidity.
What is Water Vapor?
200
The process of liquid water changing to a gas.
What is evaporation?
200
Clouds on the ground.
What is fog?
200
A front where cold air displaces warm air and forces it up steeply.
What is a cold front?
200
Weather associated with high-pressure systems.
What is is fair or good weather?
300
Ozone is present in this layer.
What is the Stratosphere?
300
The process of water vapor changing into liquid water.
What is condensation?
300
Fluffy clouds.
What are cumulus?
300
A front where warm air displaces cold air and glides up over the cold air gradually.
What is a warm front?
300
Characteristics of maritime tropical air masses.
What is warm and moist?
400
Within 10 percentage points, the percentage of oxygen in the air.
What is 21%?
400
Rain, snow, and other forms of water that fall to the ground.
What is precipitation?
400
High, feathery clouds made of ice crystals.
What are cirrus clouds?
400
A front that is not moving.
What is a stationary front?
400
Name of the cold, dry air masses from Canada.
What is polar continental?
500
This layer is the least dense. Satellites orbit Earth in this layer.
What is the Exosphere?
500
The evaporation of water through leaves of plants.
What is transpiration?
500
These clouds combine the Latin words for "heap" and "rainstorm".
What is cumulonimbus?
500
A front that results when a cold front overtakes a warm front.
What is an occluded front?
500
A prefix used to describe clouds at middle altitudes.
What is alto?