1) What is one condition that is necessary for a hurricane to form? a) Warm Ocean Water b) A strong cold front c) Cold ocean water d) A strong warm front 2) ___________________ is the long term average weather of an area for a period of many years. a) freezing b) transpiration c) climate d) precipitation 3) ____________________ is a measure of the amount of moisture in the atmosphere. a) humidity  b) rainfall c) runoff d) thermometer 4) Most of the air in the lower atmosphere near the equator is a) warm, moist, and rising b) cool, moist, and sinking c) warm, dry, and rising d) cool, dry, and sinking 5) The boundary between two different air masses is called a(n) a) high pressure area b) front c) low pressure area d) air mass 6) Cool, dry weather is usually accompanied by... a) low air pressure   b) high air pressure c) high relative humidity d) precipitation 7) A drop in air pressure usually indicates that the a) approaching weather is cool and dry  b) weather will remain unchanged   c) approaching weather is stormy  d) air temperature is falling 8) Climate describes short term changes in the variables of the atmosphere. a) True b) False 9) Cold air is more dense than warm air. a) True b) False 10) Low pressure areas often bring stormy weather. a) True b) False 11) ____________ air rises because it is ____________dense. a) Cool, Less b) Warm, Less c) Cold, More d) Warm, More 12) ___________________ currents happen because hot materials rise, cool off, then fall, replacing the risen air. a) Wind b) Sun c) Convection d) Earth 13) Ocean Currents coming up from the Equator on the Eastern coast of the US are ____________________. a) Cold b) Warm 14) A front is when 2 air masses of different temperatures meet, and usually the _________________air is forced up by the _____________air. a) cold, warm  b) cold, rain c) warm, rain d) warm, cold 15) Weather front symbols point in the direction the front is moving. a) true b) false 16) This Symbol is associated with a _____________________Front. a) Warm b) Occluded c) Cold d) Stationary 17) This picture represents the symbol for a __________________________Front. a) Warm b) Occluded c) Cold d) Stationary 18) The picture represents the symbol for a _______________________Front. a) Cold b) Warm c) Occluded d) Stationary 19) We have many hurricanes in the Gulf of Mexico because we have ________________________________. a) Warm Water b) Cold Water c) Many Cold Fronts d) The Jet Stream

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