WX301 Exam 3 UPDATED Questions and
CORRECT Answers
Infra-red satellites sense - CORRECT ANSWER✔✔- cloud top temperature
In a black and white IR image, land appears dark compared with the sea. Does this mean that
- CORRECT ANSWER✔✔- land is warmer than the sea
To pinpoint the location of a target, we need information about the - CORRECT
ANSWER✔✔- target range, elevation and azimuth
An image of radar reflectivity displayed on a horizontal map is called - CORRECT
ANSWER✔✔- a plan position indicator
Composite reflectivity is - CORRECT ANSWER✔✔- the highest reflectivity over different
elevation scans
In a range-height indicator display, convective precipitation shows up as - CORRECT
ANSWER✔✔- a tower like area of high reflectivity
The Z-R relationship relates __ to__ - CORRECT ANSWER✔✔- reflectivity to rainfall rate
A Dopper radar measures precipitation rate and - CORRECT ANSWER✔✔- radial
component of wind to/from the radar
What causes attenuation - CORRECT ANSWER✔✔- strong precipitation between the radar
and a more distant area of precipitation that reduces the signal from the distant area
Airborne radar has __ attenuation and a __ beam width than NWS WSR-88D radar -
CORRECT ANSWER✔✔- more; bigger
, Dual-polarization radar can provide more information about ___ and ___ - CORRECT
ANSWER✔✔- precip type and size, non precipitation scatters
Globally, TS are most common - CORRECT ANSWER✔✔- over tropical land masses
To get a thunderstorm, we need each of the following three conditions. - CORRECT
ANSWER✔✔- unstable air, a lifting mechanism, low level moisture
Over tropical oceans, most TS occur - CORRECT ANSWER✔✔- just before dawn
An airmass thunderstorm has mostly updrafts and surface flow toward the storm at the __
stage - CORRECT ANSWER✔✔- cumulus
Thunderstorms are most common over Iowa - CORRECT ANSWER✔✔- around sunset
In the US, most thunderstorms occur in __ over __ - CORRECT ANSWER✔✔- summer;
Florida
An air mass thunderstorm typically lasts - CORRECT ANSWER✔✔- 30-60 min
Cumulonimbus literally means - CORRECT ANSWER✔✔- heaped rain-producing clouds
TS over the desert southwest are most common during. - CORRECT ANSWER✔✔- mid
afternoon
The outer edge of the expanding cold air below a thunderstorms is called - CORRECT
ANSWER✔✔- the outflow boundary
At the outer edge of the expanding cold air we find the - CORRECT ANSWER✔✔- gust
front
A shelf cloud is an arc-shaped cloud ___ - CORRECT ANSWER✔✔- above the gust front
CORRECT Answers
Infra-red satellites sense - CORRECT ANSWER✔✔- cloud top temperature
In a black and white IR image, land appears dark compared with the sea. Does this mean that
- CORRECT ANSWER✔✔- land is warmer than the sea
To pinpoint the location of a target, we need information about the - CORRECT
ANSWER✔✔- target range, elevation and azimuth
An image of radar reflectivity displayed on a horizontal map is called - CORRECT
ANSWER✔✔- a plan position indicator
Composite reflectivity is - CORRECT ANSWER✔✔- the highest reflectivity over different
elevation scans
In a range-height indicator display, convective precipitation shows up as - CORRECT
ANSWER✔✔- a tower like area of high reflectivity
The Z-R relationship relates __ to__ - CORRECT ANSWER✔✔- reflectivity to rainfall rate
A Dopper radar measures precipitation rate and - CORRECT ANSWER✔✔- radial
component of wind to/from the radar
What causes attenuation - CORRECT ANSWER✔✔- strong precipitation between the radar
and a more distant area of precipitation that reduces the signal from the distant area
Airborne radar has __ attenuation and a __ beam width than NWS WSR-88D radar -
CORRECT ANSWER✔✔- more; bigger
, Dual-polarization radar can provide more information about ___ and ___ - CORRECT
ANSWER✔✔- precip type and size, non precipitation scatters
Globally, TS are most common - CORRECT ANSWER✔✔- over tropical land masses
To get a thunderstorm, we need each of the following three conditions. - CORRECT
ANSWER✔✔- unstable air, a lifting mechanism, low level moisture
Over tropical oceans, most TS occur - CORRECT ANSWER✔✔- just before dawn
An airmass thunderstorm has mostly updrafts and surface flow toward the storm at the __
stage - CORRECT ANSWER✔✔- cumulus
Thunderstorms are most common over Iowa - CORRECT ANSWER✔✔- around sunset
In the US, most thunderstorms occur in __ over __ - CORRECT ANSWER✔✔- summer;
Florida
An air mass thunderstorm typically lasts - CORRECT ANSWER✔✔- 30-60 min
Cumulonimbus literally means - CORRECT ANSWER✔✔- heaped rain-producing clouds
TS over the desert southwest are most common during. - CORRECT ANSWER✔✔- mid
afternoon
The outer edge of the expanding cold air below a thunderstorms is called - CORRECT
ANSWER✔✔- the outflow boundary
At the outer edge of the expanding cold air we find the - CORRECT ANSWER✔✔- gust
front
A shelf cloud is an arc-shaped cloud ___ - CORRECT ANSWER✔✔- above the gust front
