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Which of the following are greenhouse gases? ✔Correct Answer--water vapor (H2O), carbon
dioxide (CO2) and methane (CH4)
21% of the total pressure of the air is exerted by which gas? ✔Correct Answer--oxygen (O2)
During re-entry into the earth's atmosphere, a spacecraft descends to the middle of the mesosphere.
What remaining layer(s) of the atmosphere must it travel through before landing? ✔Correct
Answer--troposphere and stratosphere
Which of the following is true for the mesosphere? ✔Correct Answer--Temperature decreases with
height and the layer is heated from below
The time stamp on a weather map reads 1200Z. This is the same as ✔Correct Answer--noon
Greenwich Mean Time (GMT)
Most of the water vapor in the earth's atmosphere is found in which layer? ✔Correct Answer--
troposphere
Which gas is primarily responsible for acid rain formation? ✔Correct Answer--sulfur dioxide (SO2)
In 1987 the Montreal Protocol established a phase-out of what substance(s) that deplete the ozone
layer? ✔Correct Answer--chlorofluorocarbons (CFCs)
Pressure is ✔Correct Answer--force per unit area
Which of the following is not a reasonable sea-level pressure value? ✔Correct Answer--790 mb
Which of the following is a vector quantity? ✔Correct Answer--weight
In traveling vertically upward through the atmosphere ✔Correct Answer--pressure decreases and
density decreases
The temperature at which water freezes is equal to ✔Correct Answer--273K
Which of the following is not a year in which the IPCC (Intergovernmental Panel on Climate Change)
issued a comprehensive assessment? ✔Correct Answer--1980
Since the year 1880 the earth's observed average surface temperature has increased by ✔Correct
Answer--1°C (1.8°F)
On a summer day with the air temperature at 90°F, which value of the dew point temperature would
feel the most humid? ✔Correct Answer--71° F
, Which of the following instruments measures relative humidity using a wet-bulb and a dry-bulb
thermometer? ✔Correct Answer--psychrometer
Saturation vapor pressure ✔Correct Answer--depends on temperature only
Which would be needed to determine saturation vapor pressure? ✔Correct Answer--thermometer
If the air temperature decreases and the actual mixing ratio remains constant ✔Correct Answer--
the relative humidity will increase
The thermometer was invented by ✔Correct Answer--Galileo in 1593
Which of the following measures snowfall? ✔Correct Answer--none of these, snow gauge
The Automated Surface Observation System (ASOS) ✔Correct Answer--does not measure snowfall
In the figure above, where is the wind speed likely to be the fastest? ✔Correct Answer--Point C
In the figure above, the wind direction at point A is most likely from the ✔Correct Answer--
northwest
In the figure above, the low-pressure system depicted is ✔Correct Answer--an extratropical cyclone
500mb Level, Northern Hemisphere ✔Correct Answer--northwest
In the figure above, which point is located nearest to the bottom of a trough? ✔Correct Answer--c
In the figure above, the relative humidity is ✔Correct Answer--100%
In the figure above, the pressure is ✔Correct Answer--1007.3 mb
In the figure above, the wind velocity is ✔Correct Answer--southwest at 25 knots
A major error source in weather predictions made by mathematical models is inaccurate initial
measurement of which state variables? ✔Correct Answer--temperature, pressure and wind
velocity
Which of the following is true for Doppler radar, but not for conventional radar? ✔Correct
Answer--detects movement of precipitation toward or away from the radar site
Polar-orbiter satellites are ✔Correct Answer--orbiting the earth north-south over the poles
In the figure above, where is the horizontal pressure gradient force likely to be the strongest?
✔Correct Answer--c
"To every action, there is an equal, opposite reaction," is a statement of ✔Correct Answer--
Newton's 3rd Law
In the figure above, which of the vectors represents the horizontal pressure gradient force?
✔Correct Answer--Vector B