How far we can see, measured in meters, kilometers or miles. Visibility Where the wind is blowing from. Wind Direction How much of the sky is covered in cloud. Measured in oktas. Cloud Cover How heavy the air is.The weight of the air pressing down on the Earth's surface. Air Pressure People who study the weather and climate. Meterologists Water falling from the sky. It can be in the form of rain, sleet, hail or snow. Precipitation Tool used to measure air pressure. Barometer Tool used to measure precipitation. Rain Gauge Tool used to measure temperature. Thermometer Temperature is measured by.... Degrees Degrees of temperature can be measured in two forms. Celcius and Fahrenheit Tool used to detect the direction the wind is blowing from. Weather Vane A huge block of air moving over the Earth; it can be warm or cold, damp or dry, depending on where it came from. Air Mass Water vapor that condenses on cold grass and leaves overnight. Dew (doo) Water vapor that condenses in the air. Fog The two main causes of weather The Sun and Water Vapor The kind of weather a place usually gets. Climate The blanket of gas around the Earth. Atmosphere The lowest layer in the atmosphere, 11km deep on average. Troposphere Height above sea level. Altitude Layer of the atmosphere where most weather occurs. Troposphere Layer of the atmosphere where jet planes fly. Stratosphere Air in motion. Wind Water that has evaporated into a gas. Water Vapor Heats the Earth Sun Heats the air. Earth Water vapor that hangs in the air as tiny droplets. Mist A weather system made up of two fronts, a warm front chased by a cold one; it brings wet and windy weather. Depression The front or leading edge of an air mass. Front How fast the wind is blowing. Wind Speed How hot or cold something is, measured in degrees. Temperature Tool used to detect wind speed. Anemometer A cold air mass chasing a warm one is called a... Depression Warm air moves Upward Cold air moves Downward The average weather of a place Climate Measures how far a place is from the equator Latitude The tilt of the Earth on its axis determines an area's Seasons The imaginary line running through the earth on which the earth rotates. Axis Warm air Rises Cold air Sinks Layer of the atmosphere that gets warmed by the Earth. Troposphere Unit of measure used for wind speed. Knots, or the Beaufort Scale Tool used to measure humidity. Hygrometer Unit of measure to determine cloud cover. Okta Unit of measure to determine amount of water vapor in the atmosphere. Relative humidity Terms dealing with Weather
Weather Words 
Weather Terms 