1W0510 CDC Practice Test B Set Book 3
1W0510 CDC Practice Test B Set Book 3
- 1.Under Wien’s Law, on what is the wavelength of the maximum irradiance of a black body dependent?
- A.
Temperature
- B.
Wavelength
- C.
Color
- D.
Distance
- 2.Explain Planck’s law.
- A.
The amount of radiation emitted by a black body at a given wavelength is proportional to its temperature
- B.
The amount of radiation emitted by a black body at a given wavelength is inversely proportional to its temperature
- C.
The amount of radiation emitted by a black body at a given wavelength is proportional to its distance
- D.
The amount of radiation emitted by a black body at a given wavelength is proportional to its size
- 3.What METSAT function allows systems to be put in motion?
- A.
Animated Looping
- B.
Circular Motion
- C.
Anthresis
- D.
Satellite Visibility Function
- 4.What is the inclination angle of the polar orbiting satellites?
- A.
The inclination angle (88.7°)
- B.
The inclination angle (98.7°)
- C.
The inclination angle (78.7°)
- D.
The inclination angle (108.7°)
- 5.Of what areas do polar orbiting satellites provide coverage?
- A.
Approximately 472 nautical miles (nm), allow for global coverage every 4 hours
- B.
Approximately 472 nautical miles (nm), allow for global coverage every 8 hours
- C.
Approximately 472 nautical miles (nm), allow for global coverage every 12 hours
- D.
Approximately 472 nautical miles (nm), allow for global coverage every 6 hours
- 6.Geosynchronous satellites orbit the earth at the same angular velocity as what?
- A.
The Moon
- B.
The Earth
- C.
Other Satellites
- D.
The Speed of Sound
- 7.Which satellite allows you to loop imagery to follow fronts, lows, severe weather, and many other cloud and non-cloud features?
- A.
Polar Satewllites
- B.
Visible Satellites
- C.
Orbital
- D.
Geostationary Satellites
- 8.What frequencies have two channels to include both horizontal and vertical polarizations?
- A.
37 and 85.5GHz
- B.
19.3 and 37GHz
- C.
19.3 and 85.5GHz
- D.
19.3, 37, and 85.5GHz
- 9.How long does it take the SSM/I sensor to complete one complete revolution of the globe?
- A.
98
- B.
102
- C.
64
- D.
96
- 10.What is the scan width ( in degrees)covered by SSM/I at the earth’s surface?
- A.
45
- B.
90
- C.
60
- D.
35
- 11.How accurate (by kelvins) are brightness temperatures for SDRs?
- A.
Within 1
- B.
Within 3
- C.
Within 7
- D.
Within 5
- 12.Why is the exact location of the anticyclone’s circulation center difficult to place?
- A.
Because anticyclones are fast moving features
- B.
Because anticyclones are slow moving features
- C.
Because anticyclones are nearly invisible features
- D.
Because anticyclones are large, broad features
- 13.What should you look for on infrared imagery to indicate that precipitation is increasing?
- A.
Rapidly shrinking and heating cloud tops are an indication precipitation will increase.
- B.
Rapidly expanding and heating cloud tops are an indication precipitation will increase.
- C.
Rapidly shrinking and cooling cloud tops are an indication precipitation will increase.
- D.
Rapidly expanding and cooling cloud tops are an indication precipitation will increase.
- 14.What type of cloud pattern is the first indicator a short-wave trough is interacting with a frontal boundary?
- A.
A slight “V” shape developing on the cold-air side of the cloud pattern.
- B.
A slight “S” shape developing on the cold-air side of the cloud pattern.
- C.
A slight “L” shape developing on the cold-air side of the cloud pattern.
- D.
A slight “D” shape developing on the cold-air side of the cloud pattern.
- 15.A theoretically perfect absorber and emitter of radiation is
- A.
A gray body.
- B.
A black body.
- C.
A white body.
- D.
An electromagnetic body.
- 16.The ratio of the total amount of radiation reflected from an object to the total amount of incident radiation is called
- A.
Emissivity.
- B.
Scattering.
- C.
Reflectivity
- D.
Absorptivity.
- 17.Which law says that the amount of radiation emitted by a black body at a given wavelength is proportional to its temperature?
- A.
Stefan’s law.
- B.
Kirchoff’s law.
- C.
Planck’s law.
- D.
Wien displacement law.
- 18.Meteorological satellite (METSAT) imagery is more advantageous than synoptic reports because it
- A.
Is less contaminated by raw data.
- B.
Is a forecast that occurs more frequently.
- C.
Is an observation that occurs more frequently.
- D.
Shows areas of high temperature and moisture relationships.
- 19.The geosynchronous satellite stays in position because of a combination of
- A.
Angular velocity and centripetal force.
- B.
Angular velocity and centrifugal force.
- C.
Centripetal force and gravity.
- D.
Centrifugal force and gravity.
- 20.Which is not a geosynchronous satellite?
- A.
Meteorological Satellite (METEOSAT).
- B.
Defense Meteorological Satellite Program (DMSP) satellite.
- C.
Geostationary Meteorological Satellite (GMS).
- D.
Geosynchronous Operational Environmental Satellite (GOES).
- 21.Which is a factor that affects the amount of brightness measured by visible meteorological satellite (METSAT) imagery?
- A.
Types of radiative transfer taking place.
- B.
Type of passive remote sensing device on the satellite.
- C.
Angle of the sun.
- D.
Type of multispectral color-composite imagery involved.
- 22.Most meteorological satellite (METSAT) sensors are designed so that the visual imagery is a combination of
- A.
Near and far infrared wave lengths.
- B.
Visual and near infrared wave lengths.
- C.
Water vapor and far infrared wave lengths.
- D.
Visual and far infrared wave lengths.
- 23.With water vapor (WV) imagery, why do middle and high-level moisture affect the sensor much more than low-level moisture?
- A.
Absorption is highest between 610 to 240mb.
- B.
Absorption is lowest between 610 to 240 millibars (mb).
- C.
Reflectivity is lowest between 610 to 240mb.
- D.
Reflectivity is highest between 610 to 240mb.
- 24.Which is not a use for water vapor imagery?
- A.
Identifying potential thunderstorm areas.
- B.
Determining the polar front (PFJ) and subtropical jets (STJ).
- C.
Identifying circulation centers, troughs, ridges, and wind maximums.
- D.
Determining the thickness of mid and upper-level clouds.
- 25.Which far infrared (FIR) enhancement curve is a good all-purpose curve we most commonly use for identifying convective activity?
- A.
MB curve.
- B.
JG curve.
- C.
CC curve.
- D.
ZA curve.
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