the condition of the atmosphere at a given location for a short period of time
What is weather
100
this causes most local weather condition changes
What is movement of air masses
100
low pressure systems ussualy bring this
What are clouds and unstopable conditions
100
what are the two most prevailant gasses in the air
What are oxygen and nitrogen
200
the 3 classes of rocks
What are sedimentary metamorphic and igneous
200
the charecteristic weather that prevails from season to season and year to year
What is climate
200
the movement of air masses is determined by these 2 tings
What are prevailing winds and upper air currents
200
this is the general movement of highs and lows across the USA
What is from west to east
200
as the density of air decreeses its pressure
What is decreasses
300
most rocks show charecteristics that give clues to this
What are their formation conditions
300
the cause of weather
What is uneven heating of earths surface
300
boundaries between air masses
What are fronts
300
hazerdous weather conditions
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 earths and takes on the conditions of temperature and humidity from that location
What are air masses
400
this is likely to occurr at fronts
What is precipitation
400
this is crucial for humans to be able to prepare for and respond to hazzerdous weather conditions
What is sufficient warning
400
what is used to measure air pressure
What is a barometer
500
this rock can float
What is pumice
500
weather conditions at a location are determined by 3 things
What are temperature humidity and pressure of air masses over that location