Chapter 23 Study NotesChapter 23 Study Notes

Water in the AtmosphereWater in the Atmosphere

11

An instrument that measures relative An instrument that measures relative humidity with two identical thermometers humidity with two identical thermometers is a ________.is a ________. psychrometer.psychrometer.

22

Most _________ comes from _____ Most _________ comes from _____ oceans.oceans. evaporationevaporation equatorialequatorial

33

The ______ point is the temperature at The ______ point is the temperature at which the rate of _______ equals the rate which the rate of _______ equals the rate of evaporation.of evaporation. dewdew condensationcondensation

44

If the temperature stays the same and the If the temperature stays the same and the air becomes _____ moist, the relative air becomes _____ moist, the relative humidity will ________.humidity will ________. moremore increaseincrease

55

________ ______ must be present in ________ ______ must be present in order for clouds to form.order for clouds to form. CondensationCondensation nucleinuclei

66

The _____ of the clouds marks the The _____ of the clouds marks the ________ _______.________ _______. basebase condensation levelcondensation level

77

Precipitation in the form of ____ of ice is Precipitation in the form of ____ of ice is ____.____. lumpslumps hailhail

88

Cloud _______ sometimes ________ and Cloud _______ sometimes ________ and sometimes _______ precipitation.sometimes _______ precipitation. seedingseeding increasesincreases decreasesdecreases

99

The most ______ form of solid The most ______ form of solid precipitation is ____.precipitation is ____. commoncommon snowsnow

1010

If enough energy is ______ by liquid water If enough energy is ______ by liquid water the water will change to a ____.the water will change to a ____. absorbedabsorbed gasgas

1111

An instrument that measures precipitation An instrument that measures precipitation by bouncing radio waves off rain or snow by bouncing radio waves off rain or snow is ____________ ________.is ____________ ________. Doppler radarDoppler radar

1212

A cloud whose name has the prefix ____- A cloud whose name has the prefix ____- or the suffix –nimbus is ___________.or the suffix –nimbus is ___________. nimbonimbo rain-producingrain-producing

1313

In cloud seeding, _______ crystals are In cloud seeding, _______ crystals are used as freezing nuclei.used as freezing nuclei. silver-iodidesilver-iodide

1414

When the air ________ decreases, the When the air ________ decreases, the rate of ______ decreases.rate of ______ decreases. temperaturetemperature evaporationevaporation

1515

Clouds that often bring _______ Clouds that often bring _______ are_____________.are_____________. thunderstormsthunderstorms cumulonimbuscumulonimbus

1616

Precipitation that occurs when rain falls Precipitation that occurs when rain falls through a layer of freezing air close to the through a layer of freezing air close to the ground is known as ____.ground is known as ____. sleetsleet

1717

Condensation _____ are ____ and ____ Condensation _____ are ____ and ____ particles.particles. nucleinuclei iceice dustdust

1818

Technology that can save lives by ______ Technology that can save lives by ______ people of an approaching storm is Doppler people of an approaching storm is Doppler ______.______. warningwarning radarradar

1919

The most _______ in the atmosphere is The most _______ in the atmosphere is found over air near places like Hawaii that found over air near places like Hawaii that are ____ the equator.are ____ the equator. moisturemoisture nearnear

2020

The process that causes _____ formation The process that causes _____ formation when a moving mass of air meets a when a moving mass of air meets a mountain range is called _____.mountain range is called _____. cloudcloud liftinglifting

2121

The clouds with the _____ altitude of any The clouds with the _____ altitude of any clouds in the sky are _____ clouds.clouds in the sky are _____ clouds. highesthighest cirruscirrus

2222

The process of ____ formation that occurs The process of ____ formation that occurs when one body of moist air combines with when one body of moist air combines with another body of moist air with a different another body of moist air with a different temperature is called ______.temperature is called ______. cloudcloud mixingmixing

2323

Clouds that begin to form at very _____ Clouds that begin to form at very _____ altitudes, covering large areas of sky and altitudes, covering large areas of sky and often blocking out the sun, are ____ often blocking out the sun, are ____ clouds.clouds. lowlow stratusstratus

2424

_____ is the process by which fast-moving _____ is the process by which fast-moving molecules escape from a ______ to form molecules escape from a ______ to form water vapor.water vapor. EvaporationEvaporation liquidliquid

2525

__________ _______ is the heat energy __________ _______ is the heat energy absorbed or released by a substance absorbed or released by a substance during a _________ change.during a _________ change. Latent heatLatent heat phasephase

2626 ______ is the process in which water ______ is the process in which water

_____ changes into a liquid._____ changes into a liquid. CondensationCondensation vaporvapor

2727

The condensation that occurs when air The condensation that occurs when air comes into contact with _______ and comes into contact with _______ and cools is called _____.cools is called _____. grassgrass dewdew

2828

_________ is the process by which a ____ _________ is the process by which a ____ changes directly into a ___.changes directly into a ___. SublimationSublimation solidsolid gasgas

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