moisture and clouds flashcards.txt
Card Set Information
moisture and clouds flashcards.txt
moisture clouds mierzejewski rms
moisture and clouds study cards
Water freezes at _______.
0 degrees C
Water boils at______.
100 degrees C
What is relative humidity?
The percent of water vapor air is holding compared to how much it could hold at that temperature
What is specific humidity?
The actual amount of water vapor air is holding. Expressed as g of water/kg of air
What is condensation?
The change of state from a gas into a liquid
What is evaporation?
The change of state from a liquid into a gas
What is sublimation?
The change of state from a solid into a gas
What is deposition?
The change of state from a gas into a solid
What are the three main cloud types?
Cirrus, cumulus, and stratus
What does cirrus mean?
What does cumulus mean?
What does stratus mean?
What are cirrus clouds made of?
What kind of weather can be predicted with cirrus clouds?
A change within 12-36 hours
What is the highest cloud?
What kind of weather produces cumulus clouds?
Fair weather warm, moist air rises, producing cumulus clouds.
If a lot of warm, moist air rises all day long, what kind of cloud may develop?
What kind of weather is associated with cumulonimbus clouds?
What kind of cloud is associated with low pressure?
Which cloud type is lowest to the ground?
What type of stratus cloud is at ground level?
What kind of cloud can produce days of precipitation?
How do you interpret a sling psychrometer?
Compare the wet bulb and dry bulb temperatures using an RH chart.
What variable is in the vertical column of an RH chart?
The dry bulb temperature (air temperature)
What variable is in the horizontal column of an RH chart?
The difference between the wet bulb and dry bulb temperatures
Why does sweat cool you down?
Sweat cools you down because for evaporation to occur, heat energy must be taken from the environment, which is your skin, making you feel cooler.
Do you sweat more when it is humid or when it is dry?
You sweat the same.
If the temperature is 95 degrees, will you feel more comfortable in Florida or Arizona?
Why would you feel more comfortable in Arizona than Florida if the temperature were high?
Arizona has dry air, allowing for more sweat evaporation.
How does sleet form?
Rain falls through a layer of below 0 air, freezing the rain into ice pellets.
What is glaze (freezing rain)?
It is rain that falls onto a below 0 surface and freezes.
How does hail form?
Air circulating in cumulonimbus clouds forces ice pellets to get coated with water droplets, re-freeze, recoated again. This can happen many times before it falls as hailstones.
What is dry snow?
It is snow that forms in very cold air conditions. Small snow pellets, very light.
What is wet snow?
It is snow that forms in warmer (below freezing) air. Can be flakes and may cling to each other. Heavy.
What type of cloud can produce lightning, hail and tornadoes?
What is dew point?
It is the temperature at which water vapor condenses.
Clouds form when air is cooled to________.
The dew point
The most common type of precipitation is _______.
What is cloud seeding?
Planes dropping Silver Iodide and dry ice into clouds.
What does Silver iodide do in cloud seeding?
Allows water vapor to condense on it, creating rain droplets.
What does dry ice do in cloud seeding?
Cools the water vapor so it will condense without particles.
What is dew?
Water that condenses from the air onto a cooler surface
What is frost?
Ice that has been deposited onto a surface with a temperature that is below freezing.