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Directions: Record your answers in the spaces provided in your answer booklet.
Some questions may require the use of the Earth Science Reference Tables.
Base your answers to questions 1 through 3 on the weather information below.
A student using a sling psychrometer obtained a dry
-bulb reading of 20
C and a
wet-bulb reading of 16
C for a parcel of air outside the classroom.
1.
State the dewpoint. [1]
2.
State the change in rela
tive humidity as the air temperature and the dewpoint get
closer to the same value. [1]
3.
On another day, the student determined the dewpoint was 70
F. Record the
dewpoint, using the proper format, in the correct location on the weather station
model provided below. [1]