Front - The place where two air masses of different temperatures and pressures meet., High Pressure - An area of higher air pressure that is typically associated with clear weather., Low Pressure - An area of lower air pressure that is typically associated with wet or cloudy weather., Air Mass - A large body of air that has approximately the same temperature and humidity., Convection - The movement of energy through a moving liquid or gas., Weather - A pattern of precipitation, wind, etc. that covers a small area for a short amount of time., Climate - A pattern of temperature and precipitation that remains for a long period of time., Ocean Current - The flow of water within the ocean that moves in a regular pattern., El Niño - A periodic change in the location of warm and cool surface waters in the Pacific Ocean., Deep Ocean Current - The movement of water far below the surface of the ocean., Surface Current - The flow of water that occurs near or at the surface of the ocean., Hurricane - A low pressure tropical storm that forms over warm ocean water., Greenhouse Effect - Heat trapped close to Earth's surface due to greenhouse gases., Greenhouse Gases - Gases that act like a blanket around Earth., Ozone Layer - Protects Earth from harmful UV radiation., Precipitation - Water that returns to the surface of the Earth during water cycle., Atmosphere - Air surrounding the Earth., Hydrosphere - Solid, liquid, and gas forms of water on Earth., Cold Front - Fast moving cold air mass colliding with slow moving warm air mass. Cold air will push out warm air., Warm Front - Slow moving warm air mass moves over cold air mass. Warm air mass stays behind after cold air mass leaves., Stationary Front - Weak cold and weak warm front come together and neither moves., Occluded Front - When two fronts (not air masses) collide.,

8th Weather Patterns

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