Water Vapour Flashcards
List the 3 states water exists in?
Solid
Liquid
Vapour
What is Laten Heat?
The heat required to cause a change of state.
Does laten heat change the temperature of a substance whilst changing?
No.
The higher the temperature, the greater the quantity of water vapour that Air can hold.
True or False?
True.
The higher the temperature the less dense it becomes.
True or False?
True.
What is saturated air?
Air holding its maximum quantity of water.
How is saturation achieved?
Air being cooled at a constant pressure.
The temperature at which saturation occurs is called?
Dew point
Earth has limited amount of water locked in a water cycle. True or False?
True
Heat change influences environments. True or False?
True.
When water vapour evaporates it cools its surroundings. True or False?
True
What is sublimation?
The process where ice/snow changes straight into water vapour (solid to gas) without moving through the liquid state
What happens when saturated air is cooled?
The water vapour content will be too great and visible droplets will appear. It condenses
List the 4 ways in which Air may be cooled below its dew point.
1) Conduction
(contact with a surface)
2) Evaporation
3) Mixing
4) Adiabatic cooling (air rises, expands, cools)
What is relative humidity?
The measurement of the amount of water vapour present in the air, relative to the amount required to cause saturation at that temperature.
