Chapter 23 Study Notes

Water in the Atmosphere

1

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

2

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

3

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

4

Cloud _______ sometimes ________ and sometimes _______ precipitation. seeding increases decreases

5

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

6

Clouds that often bring _______ are_____________. thunderstorms cumulonimbus

7 ______ is the process in which water

_____ changes into a liquid. Condensation vapor

8

________ ______ are ice and dust particles. Condensation nuclei

9

________ ______ must be present in order for clouds to form. Condensation nuclei

10

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

11

If enough energy is ______ by liquid water the water will change to a ____. absorbed gas

12

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

13

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

14

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

15

Most _________ comes from _____ oceans. evaporation equatorial

16

Precipitation in the form of ____ of ice is ____. lumps hail

17

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

18

_________ is the process by which a ____ changes directly into a ___. Sublimation solid gas

19

Technology that can save lives by ______ people of an approaching storm is Doppler ______. warning radar

20

The _____ of the clouds marks the ________ _______. base condensation level

21

The clouds with the _____ altitude of any clouds in the sky are _____ clouds. highest cirrus

22

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

23

The ______ point is the temperature at which the rate of _______ equals the rate of evaporation. dew condensation

24

The most ______ form of solid precipitation is ____. common snow

25

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

26

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

27

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

28

When the air ________ decreases, the rate of ______ decreases. temperature evaporation

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