Isotherms are lines on a map joining places that have the same ______
temperature
An air mass that forms over land and is cold is called
Continental polar
When a warm air mass and cold air mass meet and neither can move the other it is called
a stationary front
An air mass that forms over water and is cold is called
maritime polar
How do you know which direction a front is moving?
It is according to which direction the triangle or semicircle is pointing
Why would you be concerned about a tornado in a thunderstorm?
Because they both develop from the same type of clouds- cumulonimbus
When two cold air masses cut off a warm front from the ground this is called
An occluded front
An air mass that is warm and forms over land is called
continental tropical
Cyclones bring what type of weather?
thunderstorms- lots of precipitation
Rain, snow, and other forms of precipitaion are usually associated with which type of pressure?
low
What happens when a warm front and cold front meet?
The warm air rises above the cold, water vapor cools, condenses, and precipitation is formed
What are some things to avoid being near during a thunderstorm when outside?
large bodies of water, any items that are conductors such as flag poles, trees
What is the unit for air pressure and seen on maps with isobar lines?
millibar
Which part of the water cycle is water vapor entering the atmosphere?
condensation
If you are outside in a tornado where should you go?
Lie flat in a ditch
Which part of the water cycle is when water returns to earth?
precipitation
What is the purpose of the isobar and isotherm lines on a weather map?
To show locations that have the same air pressure or temperature
What type of weather is associated with a warm front?
several days of light precipitation
Whn a warm air mass moves in and takes over a cold air mass this is called a
warm front
Which part of the water cycle is water changing to water vapor?
evaporation
An air mass that is warm and forms over water is called
maritime tropical
After a warm front passes, what kind of weather can you expect?
warmer and humid-probably with clouds
Anticyclones are made up of what kind of pressure and rotate which direction?
high pressure and clockwise in the northern hemisphere
Name the fronts in order from top to bottom
cold, warm, stationary, occluded
Air masses are huge bodies of air that have similar _____, ______, and ______ at any given height
temperature, humidity, and air pressure
What two conditions are required for clouds to form?
Cooling of the air and presence of particles
After a cold front passes, what kind of weather can you expect?
cool temps and clear skies
What type of weather is associated with cold fronts
severe thunderstorms are possible
Cyclones are made up of what kind of pressure and rotate in which direction?
low pressure and counter clockwise in the northern hemisphere
What is the safest thing to do if a hurricane is approaching?
evacuate
Isobars are lines on a map that join places that have the same _____
air pressure