Definitions
What is an air mass?
a body of air with horizontally uniform temperature, humidity, and pressure.
What is a front?
The boundary separating two masses of air of different densities
Which of the following factors contribute to the temperature of a region?
A. altitude
B. latitude
C. distance from coast
D. all of them above
D. all of them above
Where is the ozone layer located?
Stratosphere
What kind of weather is usually associated with a high pressure system?
Sunny Weather
What is Barometric Pressure?
The weight of the air at a specific location
What is H ?
Center of High Pressure (Calm, sunny weather)
What is humidity?
The amount of water vapor in the atmosphere.
What layer does weather occur in?
Troposphere
________________ are made of water vapor that condenses in the troposphere.
Clouds
What is Barometric Trend?
Change in pressure at a given location
What are Knots?
A unit of speed. ( mostly referring to wind speed)
What is the most abundant gas found in the atmosphere?
Nitrogen
A severe storm which involves a funnel cloud forming from a cumulonimbus cloud:
Tornado
This weather tool measures wind speed
Anemometer
What is Cloud cover?
a measurement of the visibility of the sky
What is L ?
Low Pressure (can mean storminess)
Because the earth is spinning on its axis, the global winds appear to curve. This is known as the __________ ________.
Coriolis Effect
What is the blanket of gases that surrounds the Earth
Atmosphere
What kind of weather is usually associated with a low pressure system?
Precipitation (rain, snow, etc.)
What is a cold front?
An advancing edge of a cold air mass; the trailing edge of a low-pressure system
What is an Warm Front?
An advancing edge of a warm air mass; the leading edge of a low-pressure system
In what direction do winds always blow?
From areas of high pressure to areas of low pressure
Which weather tool measures air pressure?
Barometer
__________ a two-thermometer instrument slung around a rod or pole that is also referred to as a wet dry bulb used to measure relative humidity.
Sling psychrometer