Weather Fronts #1
What is a front?
the boundary between two air masses
What is the condition of Earth’s atmosphere at a certain time and place?
Weather
What happens to air pressure as you increase in elevation?
It decreases or lowers
What happens to air pressure as you decrease in elevation?
It increases, goes up
What direction do the fronts move in?
In the direction the symbol is pointing.
How is a high pressure system formed?
cool air sinks
Cory's favorite color
Orange
How does a cold front form?
When a cold air mass pushes under a warm air mass, forcing the warm air mass to rise.
What is the measure of how hot or cold something is?
Temperature
cold, cloudy, rainy
What happens to the amount of oxygen molecules as altitude increases?
What kind of front involves 3 different air masses?
Occluded Front
What is created by a difference in air pressure?
Wind
Mrs. Foster's favorite color
Pink
What symbol is used to represent a stationary front?
line with triangles and half circles on opposite sides.
What is the amount of water vapor in the air?
Humidity
What is the force of the atmosphere on the surface of the earth?
Air pressure
What does the L represent on a map and how does the wind move?
Low Pressure, counterclockwise
Are air masses that form over land dry or moist?
Dry
What does the H represent on a map and how does the wind move?
High pressure and clockwise
Mrs. Scoggins favorite color
Purple
What kind of weather does an occluded front bring?
Strong winds and heavy rain (tornadoes)
What forms when water vapor condenses in the atmosphere?
Clouds
What happens when air is warmed or heated by the sun?
It rises
If a high pressure system is moving in, what kind of weather would you expect?
sunny, warm
What kind of weather is associated with a cold front?
Thunderstorms
What kind of front could create tornadoes?
Occluded front
Mrs. Lackey favorite color
Purple
How does an occluded front form?
When a warm air mass gets caught between two cold air masses.
What is used to measure air pressure?
Barometer
What causes a low pressure system?
warm air rises and condenses as it cools
Convection
Along a front, which air is forced upwards?
Warmer, less dense air
What is the temperature at which more condensation than evaporation occurs?
Dew Point
Most extreme volcanic eruption
Mount Tambora in 1815