science test chaoter 13

Weather

Atmospheric conditions of a certain place at a certain time

Meteorology

Study of weather

Meteorologist

Scientist who studies weather

Air pressure

Force that a column of air applies in the air or a surface below it

Barometer

Instrument used to measure air pressure

Humidity

Amount of water vapor in the air

Relative humidity

Amount of water vapor present in air compared to maximum amount of water vapor the air could contain at that temperature

Dew point

Temperature at which air is saturated and condensation can occur

Cloud

Water droplets or ice crystals suspended in the atmosphere

Fog

Clouds that form near earths surface

Precipitation

Water in liquid or solid form that falls from the atmosphere

Air mass

Large bodies of air that have uniform temperature, humidity, and pressure

Front

Boundary between 2 air masses

Isobar

Lines that connect places on a map where pressure is the same value

Isotherm

Lines that connect places with the same temperature

Stratus

Flat, white, layered clouds up to 2000 meters

Cumulus

Fluffy, healed, or likes ho clouds between 2000 and 6000 meters

Cirrus

Wispy clouds above 6000 meters

Arctic air masses

Air mass that forms Iberia Siberia and the arctic

Continental polar air masses

Air mass that doesn’t carry much moisture, brings cold temperatures in winter

Maritime polar air masses

Aid mass that forms over northern Atlantic and pacific oceans cold and humid brings cloud, rainy weather

Continental tropical air masses

Hot and dry air mass forms in summer

Maritime tropical air masses

Br8 has hit, humid air to us in summer and heavy snowfall in winter

Rain

Liquid precipitation

Snow

Precipitation in the form of solid, frozen crystals of water

Sleet

Precipitation that melts as it falls then refreezes

Hail

Large pellets of ice

Tornado

Violent, whirling column of air in contact with the ground

Hurricane

Intense tropical storm with winds exceeding 119 km/h

Blizzard

Violent winter storm characterized by freezing temperatures, strong winds, and blowing snow

Temperature

Measure of average kinetic energy of molecules in the air

Cloud coverage

Amount of clouds in the sky

Weather conditions you would see on a weather map

Precipitation, fronts, air temperature, and dew point