ASSIGNMENT 3
Textbook Assignment:
"Surface Observation Equipment" (continued), chapter 2, pages 2-9 through 2-39.
"Surface Observation Codes", chapter page 3-1 through 3-18.
3-1.
Liquid-in-glass thermometers for
meteorological applications should be read
to what increment?
1. Whole degree
2. Half degree
3. Quarter degree
4. Tenth degree
3-2.
You are using a wet-bulb thermometer in
below freezing temperatures. After wetting
the wet-bulb wick, how many minutes must
you wait before reading the value?
1.
1
2.
5
3.
10
4.
15
3-3.
What is the range of temperatures, from
lowest to highest, that can be measured by
an alcohol thermometer?
1.
-115°C to +78.5°C
2.
-115°F to +78.5°F
3.
-20°C to +120.0°C
4.
-20°F to +120.0°F
3-4.
Of the following statements, which one
correctly identifies why you should avoid
using mercury thermometers?
1.
Mercury thermometers are expensive
2.
Alcohol thermometers are better suited
for meteorological and oceanographic
measurements
3.
Mercury is prone to separation
4.
Mercury is a hazardous material
3-5.
When the temperature is above 85°F, how
many minutes must an electric
psychrometer be allowed to acclimatize
prior to use?
1.
1 to 2 minutes
2.
5 to 10 minutes
3.
10 to 15 minutes
4.
15 to 20 minutes
3-6.
You are using an electric psychrometer at
night in an unlighted area. When, if ever,
should you turn on the scale lights?
1.
When turning on the fan motor
2.
Only when actually reading the
temperatures
3.
Whenever light is needed in the
observation area
4.
Never; scale lights are provided for
calibration only
3-7.
What is the pressure element in an
ML-448/UM precision aneroid barometer?
1.
A Sylphon cell
2.
A series of gears
3.
An electronic circuit
4. A bellows
3-8.
A precision aneroid barometer should be
read to the nearest
1. 0.5 in.
2. 0.05 in.
3. 0.005 in.
4. 0.0005 in.
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