Atmospheric conditions at a given time and place
A front along which an advancing mass of warm air rises over a mass of cold air
The downward sliding of a relatively dry mass of Earth and rock
The color of a mineral under white light
The force exerted by the weight of the air
The movements of Earth's crust due to plate shifting
Precipitation in the form of spherical or irregular pellets of ice larger that 0.2 inches in diameter
A transition zone between two nearly stationary air masses of different density
When a gas turns into a liquid by cooling the gas
Precipitation consisting of generally transparent frozen, or partially frozen raindrops
The amount of water vapor in the air. Measured by a hydrometer.
The hardest gemstone
Solid fragments of inorganic or organic material that come from the weathering of rock and are carried and deposited by wind, water or ice
Weather over an extended period of time
The feel of a mineral
A warm ocean current of the Northern Atlantic Ocean off Eastern N. America
Any form of water such as rain, snow, sleet or hail that falls to the Earth's surface
A high- speed, meandering wind current moving from a Westerly direction at high speeds
The movements of Earth's crust through which molten lava, ash and gases are ejected
The degree of hotness or coldness of a body or environment
The process in which small particles of soil are broken down and carried away by glaciers, water and wind
The leading portion of a cold atmospheric air mass moving against and eventually replacing a warm air mass
The process in which materials such as rocks are broken down by things in nature such as wind and water
The interface between air masses of different temperatures or densities
When a liquid becomes a gas usually by heating the liquid
