The conditions 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 usually bring this.
What are clouds and unstable conditions ?
100
The two most prevalent gases in our air.
What are oxygen and nitrogen ?
200
The three classes of rocks.
What are sedimentary, metamorphic, and igneous ?
200
The characteristic weather that prevents from season to season and year to year.
What is climate ?
200
The movement of air masses is determined by two things.
What are prevailing winds and upper air currents ?
200
This is the general movement of highs and lows across the United States.
What is from west to east ?
200
As density of air decreases, its pressure...
What is decreases ?
300
Most rocks show characteristics that give clues to this.
What are their formation conditions ?
300
The cause of weather.
What is the uneven heating of Earth's surface ?
300
Boundaries between air masses.
What are fronts ?
300
Hazardous weather conditions.
What are thunderstorms, tornadoes, hurricanes, ice storms, and blizzards ?
300
This type of air mass is warm and humid.
What is Maritime and 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 temperature and humidity from that location.
What are air masses ?
400
This is likely to occur at fronts.
What is precipitation ?
400
This is crucial for humans to be able to prepare for and respond to hazardous weather conditions.
What is sufficient warning ?
400
Instruments used to measure air pressure.
What are barometers ?
500
This rock can float.
What is pumice ?
500
Weather conditions at a location are determined primarily by 3 things.
What are temperature, humidity, and pressure of air masses over that location ?