Frosh PhySci - Condensation quiz

Question 0

Explain why dew forms

Answer 0

Moist air comes into contact with cooler surface at or near the ground. The air is cooled and can hold less water vapor so some water vapor changes into drops of liquid water.

Question 1

F -

Define condensation

Answer 1

Condensation is process of a gas changing to a liquid

Question 2

F -

The temperature at which water condenses out of air is called the ________.

Answer 2

Dew point

Question 3

The dew point depends on the 
a- speed of the wind
b- temperature of the air
c- amount of moisture in the air
d- two of the above

Answer 3

D- Two of the above

Question 4

F -

T/F The dew point is always less than or equal to the air temperature

Answer 4

True Must cool the air further to make it give up the water

Question 5

F -

T/F Warmer air can hold more water vapor than cooler air

Answer 5

True Think humidity

Question 6

F - 
Condensation is responsible for forming
a- dew
b- fog
c- clouds
d- all of the above

Answer 6

D- all of the above

Question 7

F -

Identify the role of condensation in the water cycle

Answer 7

Changes water vapor in atmosphere to liquid water (rain) that falls to earth. Without condensation the water would just all evaporate from the earth’s surface, never to return.

Question 8

How do jet contrails form?

Answer 8

Condensation trails

Water vapor in the jet exhaust gases condense on dust particles in the air.

Question 9

T/F Clouds consist of large masses of water vapor

Answer 9

False