Quiz 1

Question 1

Vapor Pressure

Answer 1

• the portion of the total atm pressure that is contributed by water vapor
• what is in the air regardless of temp

Question 2

Saturation vapor pressure

Answer 2

• how much water vapor pressure that is necessary to make the air saturated at any give temp
• what it would take to saturate the air

Question 3

Vapor pressure and dew point:

Answer 3

-express what is in the air regardless of temp

Question 4

Relative humiditiy

Answer 4

-evaporative capacity of the air

Question 5

Dew point depression

Answer 5

-the difference between the air temp and the dew point

Question 6

How does fog form

Answer 6

• Cooling: air is cooled before its saturation point

- evaporation and mixing

Question 7

What makes clouds

Answer 7

• rising air

- rising air cools to its dew point and saturates the air

Question 8

What gets rid of clouds

Answer 8

• sinking air

- sinking air compresses and heats the the air

Question 9

Atmospheric stability

Answer 9

-how fast the environment temp decreases with altitude

Question 10

lifting condensatioin level

Answer 10

• point at which clouds form

- when dew point = temp

Question 11

Unstable env

Answer 11

-cold above, warm below

Question 12

How to make the env stable

Answer 12

• warm advection aloft to stabilize the air
• or cold advection below
• or both

Question 13

Stable env

Answer 13

-an env lapse rate that is less that 6 degrees C/km

Question 14

Conditionally unstable env

Answer 14

-env lapse rate greater than 6 but less than 10 degrees C/km

Question 15

Absolutely unstable env

Answer 15

-last rate of en greater than 10 degrees C

Question 16

Precip growth processes

Answer 16

• collision and coalescence

- ice-crystal process (bergeron process)

Question 17

Collision and coalescence

Answer 17

• large droplets overtake and collide with smaller drops in their path
• not common, only deep in tropics (warm cloud env)

Question 18

Ice-crystal process

Answer 18

• both ice crystals and liquid cloud droplets are present in the clouds at freezing temp
• supercooled water in motion with no nucleus to adhere to

Question 19

When do dendrites form

Answer 19

-12 to -18 degrees C

Question 20

Accretion

Answer 20

-ice crystals growing at the expense of nearby water droplets

Question 21

Adiabatic

Answer 21

-no gain or loss of heat within a system

Question 22

Non-adiabatic

Answer 22

-when condensation is present