Vocabulary
The natural movement of air due to heating and cooling is
Wind
What does weather describe?
Describes the conditions of the atmosphere in a specific location
What is the weight of the atmosphere over a location?
Barometric Pressure
Atmospheric Pressure
What is an air mass?
Are the conditions relatively the same or different within an air mass?
A large body of air that can cover thousands of miles and is relatively the same conditions (temperature and humidity) throughout
What is a weather front?
The boundary between two different air masses
A high pressure system is often found behind what kind of front?
Cold Front
What is fog?
It is a cloud on the ground
What are the 3 main things the sun is responsible for when we are talking about weather
Wind, Precipitation, Temperature
Device used to measure air pressure
Barometer
What are the 6 factors we use to describe weather
Temperature, Sky Conditions, Wind, Precipitation, Barometric Pressure, Humidity
Finish the sentence
Barometric pressure decreases as altitude ________
Increases
What type of air mass is formed near the poles and over water?
Maritime Polar
What type of weather front is represented by a blue line with triangles on it?
Cold Front
How does air pressure flow?
From ________ to ___________
Areas of high pressure to areas of low pressure
What are the three main types of clouds?
Cirrus, Cumulus, Stratus
What are the two vertical (special clouds)
Cumulus
Cumulonimbus
A measure of how much water vapor is in the air
Humidity
What are the two things that make the temperature feel colder or warmer than it actually is?
Wind Chill
Heat Index
What symbol do we use to represent a high pressure system and what kind of weather can you expect to come with a high pressure system?
Capital Blue H
Happy Weather
What type of air mass is formed over land near the equator?
Continental Tropical
What type of weather front is represented by a solid red/blue line with alternating blue triangles and red half circles on a weather map
Stationary Front
What direction do warm air masses generally move across the US?
North and/or East across the US
What are the three types of cirrus (high) clouds?
Cirrus, Cirrocumulus, Cirrostratus
What is an Isotherm map and what can it be used to locate?
An Isotherm Map is a map that shows the temperature of a region
It can be used to locate warm and cold air masses
A large body of air with roughly the same temperature and humidity
Air Mass
What are the 4 ways we describe sky conditions?
Clear, Partly Cloudy, Mostly Cloudy, Cloudy
What symbol do we use to represent a low pressure system and what type of weather can you expect to come with a low pressure system?
Capital Red L
Lousy Weather
The direction of an air mass depends on these three things
Where it is formed
The direction of wind currents
The Earths Tilt (position of Earth relative to the sun)
What type of weather front is represented by a purple line with alternating purple triangles and half circles?
Occluded Front
What direction to cold air masses generally move across the US?
South and/or East across the US
What are the two cumulus (middle) clouds?
Altostratus, Altocumulus
What type of weather is most likely observed in an area when cirrus clouds are present?
Pleasant weather
The boundary between two air masses - where they meet
Weather Front
What factor depends on the dew point?
Humidity
What pressure system is likely to bring strong winds?
Low Pressure System
What are the 4 types of air masses
Continental Polar
Continental Tropical
Maritime Polar
Maritime Tropical
When there is a significant difference in temperature and humidity in two weather fronts that collide what kind of weather can be expected?
A fast moving channel of air that moves between polar air masses in the northern US and tropical air masses in the southern US
Jet Stream
What are the three stratus (low) clouds?
Stratus, Stratocumulus, Nimbostratus
What direction does weather move in the United States?
West to East