ATM S 103 FINAL EXAM WITH
COMPLETE SOLUTION
The dew on the grass forms from _______ when the air temperature equals the
_______ - ANSWER Condensation, Dew point
What is the dew point? - ANSWER Temperature at which air must be cooled
under constant pressure to achieve saturation
A phase change from a gas to a liquid is called ______, heat is ________ the
environment and the environment _______ - ANSWER Condensation, released
to, warms
What increases the saturation vapor pressure? - ANSWER increasing the air
temperature
If very cold air is brought indoors and warmed with no change in its moisture
content, the saturation vapor pressure of the air will ___________ and the
relative humidity of the air will _________________ - ANSWER Increase, decrease
How does pressure change as altitude increases? - ANSWER Pressure
decreases as altitude increases.
What is temperature? - ANSWER An average of the speed of the molecules in
an air parcel.
True/False: If other conditions remain unchanged, replacing dry air molecules
(oxygen or nitrogen) by an equal number of water-vapor molecules
decreases the density of the gas. - ANSWER True
When the air temperature remains constant, evaporation of water into the air
, will _______ the relative humidity and ____________ the dew point. - ANSWER
Increase, increase
In an unsaturated parcel containing vapor, how would we expect the relative
humidity (RH) to change as a parcel rises? - ANSWER The RH will increase
because the saturation vapor pressure decreases with temperature
True/False: Air parcels will sink if they are less dense than the surroundings
and will rise if they are more dense than the surroundings - ANSWER False
You are boiling pasta in a pot in Denver, Colorado where the air pressure is
about 850 mb. Why does it take longer to cook the pasta? - ANSWER Because
at a lower atmospheric pressure, the saturation vapor pressure occurs at a
lower temperature, thus water boils at a lower temperature
What is the dry adiabatic lapse rate? - ANSWER the rate of change of
temperature in an unsaturated air parcel that is being lifted in the
atmosphere.
How do the water molecules in water vapor behave? - ANSWER Molecules
are highly separated and rarely make bonds
What is saturation vapor pressure? - ANSWER It is the force exerted by the
collision of water vapor molecules on a surface when the air is saturated
What is relative humidity? - ANSWER An indicator of how close the air is to
being saturated
The total water vapor is measured inside a cubic meter of air at sea level,
which of the following observed cases would have the most water vapor? -
ANSWER Air temperature 90°F Relative humidity 80%
What will not change the saturation vapor pressure of an air parcel that is
COMPLETE SOLUTION
The dew on the grass forms from _______ when the air temperature equals the
_______ - ANSWER Condensation, Dew point
What is the dew point? - ANSWER Temperature at which air must be cooled
under constant pressure to achieve saturation
A phase change from a gas to a liquid is called ______, heat is ________ the
environment and the environment _______ - ANSWER Condensation, released
to, warms
What increases the saturation vapor pressure? - ANSWER increasing the air
temperature
If very cold air is brought indoors and warmed with no change in its moisture
content, the saturation vapor pressure of the air will ___________ and the
relative humidity of the air will _________________ - ANSWER Increase, decrease
How does pressure change as altitude increases? - ANSWER Pressure
decreases as altitude increases.
What is temperature? - ANSWER An average of the speed of the molecules in
an air parcel.
True/False: If other conditions remain unchanged, replacing dry air molecules
(oxygen or nitrogen) by an equal number of water-vapor molecules
decreases the density of the gas. - ANSWER True
When the air temperature remains constant, evaporation of water into the air
, will _______ the relative humidity and ____________ the dew point. - ANSWER
Increase, increase
In an unsaturated parcel containing vapor, how would we expect the relative
humidity (RH) to change as a parcel rises? - ANSWER The RH will increase
because the saturation vapor pressure decreases with temperature
True/False: Air parcels will sink if they are less dense than the surroundings
and will rise if they are more dense than the surroundings - ANSWER False
You are boiling pasta in a pot in Denver, Colorado where the air pressure is
about 850 mb. Why does it take longer to cook the pasta? - ANSWER Because
at a lower atmospheric pressure, the saturation vapor pressure occurs at a
lower temperature, thus water boils at a lower temperature
What is the dry adiabatic lapse rate? - ANSWER the rate of change of
temperature in an unsaturated air parcel that is being lifted in the
atmosphere.
How do the water molecules in water vapor behave? - ANSWER Molecules
are highly separated and rarely make bonds
What is saturation vapor pressure? - ANSWER It is the force exerted by the
collision of water vapor molecules on a surface when the air is saturated
What is relative humidity? - ANSWER An indicator of how close the air is to
being saturated
The total water vapor is measured inside a cubic meter of air at sea level,
which of the following observed cases would have the most water vapor? -
ANSWER Air temperature 90°F Relative humidity 80%
What will not change the saturation vapor pressure of an air parcel that is
