Air________________ and _________________ when cooled. - contracts, sinks, Air __________________ and ______________ when heated. - expands, rises, Air moves from areas of... - high pressure to low pressure., Air takes up _________________ - space, Air exerts __________________ - pressure, Air has ____________/______________ - mass/weight, Day to day changes in temperature, precipitation etc... - weather, Long term weather patterns in a large area... - climate, Air is made up of tiny particles called _____________. - molecules, When there are lots of air particles in one place, it produces... - high pressure, When there are fewer particles in one place it produces... - low pressure, A high pressure system... - brings sunny, cooler days., A low pressure system... - produces warmer, rainy days., How closely packed molecules are... - density, May produces thunderstorms, hail and strong winds. - Cold Front, Produces steady rain, humidity and increased temperature - Warm Front, A large body of air with similar temperature and humidity... - air mass, The amount of moisture in the air... - humidity, Cold Front - Cold air mass pushes under a warm air mass causing it to rise quickly., Warm Front - A warm air mass slowly slides up and over a cold air mass.,

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