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Science

TermDefinition
Rain Moisture condensed from the atmosphere that falls visibly in separate drops.
Freezing Rain Rain that freezes on impact with the ground or solid objects.
Sleet A form of precipitation consisting of ice pellets, often mixed with rain or snow.
Snow Atmospheric water vapor frozen into ice crystals and falling in light white flakes or lying on the ground as a white layer.
Hail Pellets of frozen rain which fall in showers from Cumulonimbus clouds.
Rain Gauge A device for collecting and measuring the amount of rain which falls.
Clouds A visible mass of condensed water vapor floating in the atmosphere, typically high above the ground.
Wind The perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction.
Anemometer An instrument that measures wind speed and wind pressure.
Trade Winds The wind that flows towards the equator from the North-East in the Northern Hemisphere or from the South-East in the Southern Hemisphere.
Prevailing Westerlies Prevailing winds from the West toward the East in the middle latitudes between 30 and 60 degrees latitude.
Polar Westerlies Prevailing winds from the West toward the East in the middle latitudes between 30 and 60 degrees latitude.
Wind Vane An instrument that measures the direction from which the wind is blowing
Air pressure It is the force exerted on a surface by the air above it as gravity pulls it to Earth
Barometer An instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.
Low pressure A condition of the atmosphere in which the pressure is below average
High pressure A condition of the atmosphere in which the pressure is above average
Coriolis Effect The result of Earth's rotation on weather patterns and ocean currents
Cold Front The boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
Warm Front The boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
Occluded Front Forms when a warm air mass gets caught between two cold air masses.
Stationary Front A front between warm and cold air masses that is moving very slowly or not at all.
El Niño A warming of the ocean surface, or above-average sea surface temperatures, in the central and eastern tropical Pacific Ocean.
Gulf Stream A relatively warm ocean current flowing northeastwards off the Atlantic coast of the US from the Gulf of Mexico.
La Niña During La Niña winters, the South sees warmer and drier conditions than usual. The North and Canada tend to be wetter and colder
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Created by: Amodi
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