WX301 Exam 3 Questions and
Answers 100% Pass
Infra-red satellites sense - ✔✔cloud top temperature
In a black and white IR image, land appears dark compared with the sea. Does this
mean that - ✔✔land is warmer than the sea
To pinpoint the location of a target, we need information about the - ✔✔target range,
elevation and azimuth
An image of radar reflectivity displayed on a horizontal map is called - ✔✔a plan
position indicator
Composite reflectivity is - ✔✔the highest reflectivity over different elevation scans
In a range-height indicator display, convective precipitation shows up as - ✔✔a tower
like area of high reflectivity
The Z-R relationship relates __ to__ - ✔✔reflectivity to rainfall rate
A Dopper radar measures precipitation rate and - ✔✔radial component of wind
to/from the radar
What causes attenuation - ✔✔strong precipitation between the radar and a more distant
area of precipitation that reduces the signal from the distant area
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 1
, Airborne radar has __ attenuation and a __ beam width than NWS WSR-88D radar -
✔✔more; bigger
Dual-polarization radar can provide more information about ___ and ___ - ✔✔precip
type and size, non precipitation scatters
Globally, TS are most common - ✔✔over tropical land masses
To get a thunderstorm, we need each of the following three conditions. - ✔✔unstable
air, a lifting mechanism, low level moisture
Over tropical oceans, most TS occur - ✔✔just before dawn
An airmass thunderstorm has mostly updrafts and surface flow toward the storm at the
__ stage - ✔✔cumulus
Thunderstorms are most common over Iowa - ✔✔around sunset
In the US, most thunderstorms occur in __ over __ - ✔✔summer; Florida
An air mass thunderstorm typically lasts - ✔✔30-60 min
Cumulonimbus literally means - ✔✔heaped rain-producing clouds
TS over the desert southwest are most common during. - ✔✔mid afternoon
The outer edge of the expanding cold air below a thunderstorms is called - ✔✔the
outflow boundary
At the outer edge of the expanding cold air we find the - ✔✔gust front
A shelf cloud is an arc-shaped cloud ___ - ✔✔above the gust front
For a multi-cell TS with low-level flow from the south, new cells typically form. -
✔✔south of the mature cell
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
Answers 100% Pass
Infra-red satellites sense - ✔✔cloud top temperature
In a black and white IR image, land appears dark compared with the sea. Does this
mean that - ✔✔land is warmer than the sea
To pinpoint the location of a target, we need information about the - ✔✔target range,
elevation and azimuth
An image of radar reflectivity displayed on a horizontal map is called - ✔✔a plan
position indicator
Composite reflectivity is - ✔✔the highest reflectivity over different elevation scans
In a range-height indicator display, convective precipitation shows up as - ✔✔a tower
like area of high reflectivity
The Z-R relationship relates __ to__ - ✔✔reflectivity to rainfall rate
A Dopper radar measures precipitation rate and - ✔✔radial component of wind
to/from the radar
What causes attenuation - ✔✔strong precipitation between the radar and a more distant
area of precipitation that reduces the signal from the distant area
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 1
, Airborne radar has __ attenuation and a __ beam width than NWS WSR-88D radar -
✔✔more; bigger
Dual-polarization radar can provide more information about ___ and ___ - ✔✔precip
type and size, non precipitation scatters
Globally, TS are most common - ✔✔over tropical land masses
To get a thunderstorm, we need each of the following three conditions. - ✔✔unstable
air, a lifting mechanism, low level moisture
Over tropical oceans, most TS occur - ✔✔just before dawn
An airmass thunderstorm has mostly updrafts and surface flow toward the storm at the
__ stage - ✔✔cumulus
Thunderstorms are most common over Iowa - ✔✔around sunset
In the US, most thunderstorms occur in __ over __ - ✔✔summer; Florida
An air mass thunderstorm typically lasts - ✔✔30-60 min
Cumulonimbus literally means - ✔✔heaped rain-producing clouds
TS over the desert southwest are most common during. - ✔✔mid afternoon
The outer edge of the expanding cold air below a thunderstorms is called - ✔✔the
outflow boundary
At the outer edge of the expanding cold air we find the - ✔✔gust front
A shelf cloud is an arc-shaped cloud ___ - ✔✔above the gust front
For a multi-cell TS with low-level flow from the south, new cells typically form. -
✔✔south of the mature cell
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
