Download Water change of states

Water change of states
Vapor, liquid, solid
–All can exist at same time
‘Triple point’
Iceberg, water, vapor
Name another material whose solid form is less dense than liquid (i.e. floats!)? What would
happen if it were not this way?
–Transfer of heat between states key
Humidity
Measure of amount of water in air
–Absolute vs. relative
Absolute = how much water in air (g/kg)
Relative = how much water air of a given temp can hold; TOTALLY dependent on temp of air
–Warm air can hold more water than cold
–Why? Faster movement of particles
Relative humidity = amt of water in air/amt air can hold
Dew point
Temperature where water vapor within air of given temp/vapor amt condenses (or when reach
100% relative humidity)
–The base of a cloud is the dew point
–Depends on amount of water in air
–So; air temp = 80 w/ D.P of 70 means that the air must cool to 70 to condense
How cool? Lift it (hence clouds!)