part 2 and 3 study guide

Question 1

water vapor directly changes into a solid

Answer 1

deposition

Question 2

solid directly changes to gas

Answer 2

sublimation

Question 3

the amount of water vapor in the air

Answer 3

humidity

Question 4

the amount of water vapor compared to how much the air can hold

Answer 4

relative humidity

Question 5

what kind of temps can hold more water vapor and how far can the relative humidity (percents) can go up to

Answer 5

high 0-100%

Question 6

100% relative humidity means what

Answer 6

saturated

Question 7

humidity is measured with a __________

Answer 7

psychrometer

Question 8

the temp that air needs to be cooled to reach saturation causes what

Answer 8

condensation

Question 9

dew point of 70 degrees can hold more water than ___ degrees

Answer 9

50

Question 10

dew point is always ______ or _______ as the air temp

Answer 10

lower, the same

Question 11

if dew point and air temp are close it feels

Answer 11

humid

Question 12

if dew point and air temp are far apart it feels

Answer 12

dry

Question 13

air must be cooled to at or below its dew point /material for water to stick to (condensation nuclei

Answer 13

2 things needed for condensation to happen

Question 14

what is needed for dew and frost to form

Answer 14

air cools to dew point by contact with a cold surface, condensation occurs on that surface

Question 15

if it is above 0 degrees celsius what forms

Answer 15

dew

Question 16

if it is below 0 degrees celsius what forms

Answer 16

frost

Question 17

what 3 things are needed when fog forms

Answer 17

cold surface cools the warm moist air
tiny droplets form around condensation nuclei
droplets stay suspended in air because of little air movement

Question 18

what 2 things do you need for clouds to form

Answer 18

air is saturated and cloud condensation nuclei