Cloud Test

Question 1

Which gas is most influential on day-to-day weather changes

Answer 1

Water vapor, it is also the source of all sleet, snow, clouds, and rain

Question 2

What percent of air, of volume does this gas occupy

Answer 2

0-4% volume

Question 3

What is latent heat

Answer 3

It is the heat that is absorbed or released

Question 4

What does it mean if air is saturated

Answer 4

Any new water vapor will cause old water vapor to condense

Question 5

When air is saturated, which holds more water, cold or warm air

Answer 5

Warm air holds more water than cold air

Question 6

What is relative humidity

Answer 6

The percentage of moisture the air holds relative to the amount it could hold

Question 7

What are to ways relative humidity can be changed

Answer 7

By adding or removing water vapor or changing the air temperature

Question 8

If water vapor content stays the same, if we lower air temperature will it increase or decrease relative humidity

Answer 8

It will increase relative humidity

Question 9

What is the dew point

Answer 9

The dew point is when a parcel of air would need to be cooled to reach saturation

Question 10

Will dew point of moist air be high or low

Answer 10

Higher

Question 11

What is an example of a dew point

Answer 11

Dew on the grass in the morning

Question 12

Will the dew point be high or low in dry air

Answer 12

Low

Question 13

Explain how compressing and expanding air affects the motion of gas particles and therefore air temperature

Answer 13

Compressing air makes gas particles move faster which increases temperature, expanding air makes gas particles move slower which decrease temperature

Question 14

Describe evaporation and is heat absorbed or released

Answer 14

Liquid to gas and heat is absorbed

Question 15

Describe condensation and it heat absorbed or released

Answer 15

Gas to liquid and heat is released

Question 16

Describe sublimation and it heat absorbed or released

Answer 16

Solid to gas and heat is absorbed

Question 17

Describe deposition and it heat absorbed or released

Answer 17

Gas to solid and heat is released

Question 18

Describe freezing and it heat absorbed or released

Answer 18

Liquid to solid heat it released

Question 19

Describe melting and it heat absorbed or released

Answer 19

Solid to liquid heat is absorbed

Question 20

What is an adiabatic temperature change

Answer 20

Temperature changes occur even though heat isn’t added or subtracted

Question 21

Describe how adiabatic temperature changes affect temperature as we move away from the surface of the earth

Answer 21

As you move away from earth, atmospheric pressure decreases so air decreases, the air expands so the temperature will decrease

Question 22

Why is there a difference between the dry adiabatic rate and the wet adiabatic rate

Answer 22

Dry is the rate of cooling or heating unsaturated air, it is be
bellow the condensation rate at 10degrees c || the wet has a slower rate of cooling because of latent heat it is above the condensation rate at 5degrees c

Question 23

What is stable air

Answer 23

This air is forced to rise which creates a widespread of thin clouds and precipitation

Question 24

What is unstable air

Answer 24

This is air that rises freely or has vertical movement

Question 25

What is needed in order for a cloud to form

Answer 25

air often reaches saturation by cooling air to its dew point, it needs a surface for water vapor to condense on

Question 26

What are two ways to classify a cloud

Answer 26

Shape and height

Question 27

What is fog

Answer 27

It is a cloud with its base at or near the ground

Question 28

How is fog formed

Answer 28

It is caused by warmer air moving over a cool surface, and also evaporation when cool air moves over warmer wet land

Question 29

Describe the required increase of cloud droplets for precipitation

Answer 29

Cloud droplets are 20micrometers in size and they have to grow one million times bigger to fall to earth