unit 4, exam 1

Question 1

latent heat

Answer 1

quantity of heat involved in phase change

Question 2

specific heat

Answer 2

amount of heat that will raise the T of 1g of a substance by 1C

Question 3

low specific heat

Answer 3

warms fast

Question 4

high specific heat

Answer 4

warms slow

Question 5

sublimation

Answer 5

solid to vapor

Question 6

deposition

Answer 6

Vapor to solid

Question 7

thermal inertia

Answer 7

resistance to T change

Question 8

Transpiration

Answer 8

water taken up from soil by roots travels up and escapes as vapor through stromata

Question 9

evapotransiration

Answer 9

direct evaporation from earths surface and transpiration

Question 10

percipitation

Answer 10

water in all phases but gas falls form clouds under the influence of gravity

Question 11

humidity

Answer 11

loosely defines atmospheric water content

ambiguous

Question 12

pressure

Answer 12

a force over a unit area (colum)

Question 13

air pressure

Answer 13

force of all the molecules colliding with a unit surface area of any object in contact with air

Question 14

water pressure

Answer 14

water vapors contribution to the total air pressure

Question 15

dynamic equilibrium

Answer 15

rate of condensation matches rate of evaporation

Question 16

saturation vapor pressure

Answer 16

vapor pressure observed at dynamic equilibrium where no more water vapor can occur in the air

Question 17

Relative humidity

Answer 17

actual/saturation

Question 18

dewpoint T

Answer 18

the T at which air must be cooled to achieve saturation
RH is 100%dewpoint
better at describing humidity
can never be greater than air T

Question 19

cloud

Answer 19

form when saturation is reached

visible aggregate of tiny liquid water droplets and ice crystals suspended in atmosphere

Question 20

expansion cooling

Answer 20

when an expanding V of air cools because the molecules are working against the surrounding air and end up losing kinetic energy during expansion

Question 21

compressional heating

Answer 21

when a contracting V of air warms because the molecules are gaining energy from the work done in the surrounding air during compression

Question 22

percipitable water

Answer 22

the amount of liquid water existing between surface and the top of the atmosphere

Question 23

atmospheric stability

Answer 23

the reaction fo the atmosphere if an air parcel is forced to rise or fall

Question 24

clouds form

Answer 24

air rises
cooling(rising air cools to dewpoint)
condence (saturates)