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Weather Grade5

Weather Vocabulary/Definitions

TermDefinition
Cumulus clouds
Stratus clouds Are flat layers that form close to the Earth. They are often connected with stormy weather.
Cirrus clouds Are thin wispy and form high in the sky. They appear before a change in the weather.
Water Cycle The process in which water moves through the ground, evaporates from the earth into the air, forms clouds, and falls back to earth.
Precipitation Rain, snow, sleet, or hail.
Condensation The process in the water cycle by which gas becomes a liquid.
Evaporation The process in the water cycle in which a liquid becomes a gas due to the sun's heat
Runoff Water flowing over the Earth's surfaces into the lakes, rivers, and oceans.
Groundwater Water that has soaked into the soil.
Weather The state of atmosphere at a certain time and place.
Temperature Is the measure of how warm or cold something is.
Climate is the average weather conditions in an area over a long period of time.
Humidity the amount of water vapor in the air.
Barometer An instrument that measures air pressure
Rain gauge An instrument that measures the precipitation
Meteorologist A person who forecast the weather and studies the climate patterns.
Anemometer An instrument that measures wind speed
Weather Vane An instrument that measures wind direction
Thermometer An instrument that measures air temperature
Weather Satellites An instrument used to photograph and track large-scale air movements
Wind Is caused by differences in air pressure
Air Mass A large body of air that has the same temperature and level of humidity throughout
Cool Air Mass Forms where the land temperature is cool.
Warm Air Mass Form over the land that is warm
Low Air Pressure A mass of rising warm air that usually bring wet, stormy weather.
High Air Pressure A mass of sinking cool air that usually bring fair weather.
Occluded Front Forms when a warm air mass is caught between two cold air masses.
Stationary Front Occurs when a warm air mass and a cold air mass meet.
Cold Front A cold air mass moves under a warm mass and pushes the warm air upward.
Warm Front Forms when warm air bumps with colder air. As the air cools, water vapor can condense, creating precipitation.
Altitude The farther up you go the temperature decreases. Air is less dense and cannot hold the heat.
Sea Breeze The movement of air caused by cool air over the ocean moving toward the land.
Land Breeze The movement of air created by cool air over land moving toward the ocean.
Transpiration The process in the water cycle in which plants give off water
Cumulonimbus Clouds A type of cumulus cloud that is tall and gray, and associated with thunderstorms.
Tornado A violent whirling wind with a funnel shaped cloud.
Hurricane A violent storm that forms over warm ocean water and his winds of 74+ mph.
Local winds Wind that forms in a small area due to temperature changes
Prevailing Winds A global wind that blows constantly from the same direction.
Gulf Stream A warm ocean current that flows from the Gulf of Mexico
El Niño A climate pattern where the water in the Pacific Ocean near the equator gets hotter than usual and affects the atmosphere and weather around the world
La Niña A climate pattern where the water in the Pacific Ocean near the equator gets colder than usual and affects the atmosphere and weather around the world
Created by: Teaching5th