Chapter 7-Atmosperic Pressure and Precipitation Flashcards
(41 cards)
How much of the Earth’s water is in the oceans?
97.2%
How much of Earth’s water is non oceanic?
2.8%
How much of Earth’s water is fresh?
0.02%
What does the hydrologic cycle consist of?
Evaporation, Precipitation, Infiltration
Where does phase change occur in the hydrologic cycle?
Evaporation
What is latent heat?
Energy released or absorbed during phase changes.
What are the 6 phase changes?
Condensation, Evaporation, Freezing, Melting, Sublimation, Deposition
Is latent heat required for all of the phase changes?
Yes
When is latent heat released?
Deposition, Condensation, Freezing
When is latent heat absorbed?
Sublimation, Vaporization, Melting
Why might orange growers spray their fruits with water before temperatures dip below freezing?
It preserves the state of the crop on the inside.
When releasing latent heat does the environment cool or warm?
Warms
When absorbing latent heat does the environment cool or warm?
Cools
What is humidity?
How much water vapor is in the air
What is maximum humidity?
The maximum amount of water vapor a definable parcel of air can hold
What is the relationship between maximum humidity and air temperature?
Maximum humidity depends on air temperature.
What is saturation?
Point where air cannot hold anymore moisture
What happens when saturation is met?
Condensation occurs
Can warmer or colder air hold more water vapor?
Warmer air
What is specific humidity?
How much water vapor is actually in the air (measurable amount)
What is relative humidity?
The ratio between the
specific humidity and the maximum humidity for a definable parcel of air
How does relative humidity change throughout the day if specific humidity is held constant?
Relative humidity will decrease
What is a Sling psychrometer?
Way to measure how much cooling there is due to evaporation
What is dew point temperature?
The temperature when condensation occurs
