the conditions of the atomsphere at the given location for a short period of time
What is weather?
100
this causes most local weather conditions changes
What is movement of air masses?
100
low-pressure system usually bringthis
What are clouds and unstable conditions
100
the two most prevalent gases in our air
What are oxygen and nitrogen?
200
the 3 classes of rocks
What are sedimentary, metamorphic, and igneous?
200
the characteristic weather that prevails from season and year to year
What is climates?
200
the movement of air masses is determined by two things
What are prevailing winds are upper air masses?
200
this is general movement of highs and lows across theUnited States
What is from west to east?
200
As the density of air decreases, its pressure
What is decreases
300
most rocks show characteristic that give clies to this
What are teir formation conditions?
300
the cause of weather
What is the uneven heating of Earth's surface?
300
boundaires between air masses
What are fronts?
300
hazardous weather conditions (5)
What are thunderstorms, tornadoes, hurricanes, ice storms, and blizzards
300
this type of air mass is warm and humid
What is Maritime Tropical?
400
this model shows how types of rock or rock material may be transformed from one type of rock to another
What is the rock cycle?
400
these form when air remains nearly stationary over a large section of Earth's surface and takes on the conditions of temperture and humidity from that loction.
what are air masses?
400
this is likely to occur at fronts
What is precipitation?
400
this is crucial for humans to be able prepare for and resond to hazardous weather conditions
What is sufficient warning?
400
Instruments used to measure air pressure
What are barometer?
500
this rock can float
What is pumice?
500
weather conditions at a location are determined primarily by 3 thing
What are temperature, humdity, and pressure of airmasses over tnat location?