Weather Maps And Air Pressure Flashcards
What is Atmospheric Pressure?
Pressure caused by the weight of air above an area (the higher you get the higher the pressure).
What is an Air Mass?
A large body of air that has relatively uniform temperature and humidity.
What is a Front?
The boundary between two air masses.
What is an Isobar?
A line connecting points of equal atmospheric pressure.
What is a Barometer?
An instrument that measures atmospheric pressure in millibars (mb).
What is an Anemometer?
An instrument that measures wind speed in miles per hour (mph).
What is a Weather Balloon?
A device that carries instruments to high altitudes.
What is a Wind Vane?
An instrument that measures wind direction in North, South, East, and West.
Do high pressure areas move into low pressure areas or do low pressure areas move into high pressure areas?
High pressure moves into low pressure areas because cold air masses are more dense and flow to lower pressure.
This explains the movement of air masses in meteorology.
What directions does a cold air mass typically approach from?
Cold air masses typically approach from the North (N), Northwest (NW), or West (W).
What directions does a warm air mass typically approach from?
Warm air masses typically approach from the South (S), Southeast (SE), or West (W).
What type of weather is associated with High Pressure?
High Pressure is associated with sunny and clear weather.
What type of weather is associated with Low Pressure?
Low Pressure is associated with rainy and stormy weather.
What type of weather is associated with a Cold Front?
Cold Front is associated with cooler weather and thunderstorms.
What type of weather is associated with a Warm Front?
Warm Front is associated with warm, moist rain.
What type of weather is associated with a Stationary Front?
Stationary Front is associated with light rain and showers over several days.
What type of weather is associated with an Occluded Front?
Occluded Front is associated with thunderstorms.
What is the description of air mass movement for High Pressure?
Air is cooling and sinking
What is the description of air mass movement for Low Pressure?
Warming and rising
What is the description of air mass movement for a Cold Front?
Fast cold air front overtakes a warm front, pushing it upward.
What is the air mass movement for warm front?
Warm air replaces cold air
What is the air mass movement for stationary front?
Little movement of both
What is the air mass movement for occluded front?
Fast cold front overtakes a warm front, pushing it up and over cold air
What comes before a warm front?
Consistent light precipitation
What comes during a warm front
Pressure goes down
What comes after a warm front
Sunny warm and humid
What comes before a cold front
Thunderstorms
What comes during a cold front
Pressure increased
What comes after a cold front
Cold and dry
