Chapter 11

is a mixture of gasses, liquids, and solid particles that surround the earth

makes up 78% of the earths atmosphere

makes up 21% and is necessary for life

the remaining 1% is made of water vapor ,other gasses and tiny particles

the carbon dioxide in the remaining 1% is used by plants and released by animals

where we live and our weather occurs

layers of the earth's atmosphere from the ground up

energy of the sun that travels through empty space

found between the equator and the poles having varying temperatures

the amount of water vapor in the air

the droplets of water vapor that have condensed onto tiny particles suspended in the air

is the force upon a given point

the force exzerted by air molecules upon a given area

occurs where warm air rises,often bringing precipitation

occurs where cold air sinks and is associated with clear skies

an instrument used to measure air pressure

a pattern of weather that an area has over a long peroid of time

the three zones of the earth

when air presure falls ,bad weather happens

wind is formed when air moves from high pressure to low pressure

when water vapor condenes on cooler surfaces dew forms