1) Base velocity displays (select all that apply) a) Speed of the wind toward or away from the radar b) Intensity of the precipitation  c) Movement of precipitation over the time 2) What are the values of reflectivity for precipitation mode?  a) From -28 dbz to +28 dbz b) From 0 to 75 dbz c) Above 45 dbz 3) Positive values (warm yellow to red colors) of velocities indicates movements  a) perpendicular to the radar beam b) away from the radar c) towards the radar d) parallel to the radar beam 4) Which non-meteorological targets can be detected by weather radars? (select all that apply) a) Birds b) Trees  c) Buildings  d) Smoke e) Dust f) All from the above 5) What factros enhance the radar reflectivity around the melting level? (select all that apply) a) The targets become warmer b) The targets increase in size c) The targets begin to melt and develop a liquid coating 6) Dual-polarizatiot radars improves (select all that apply) a) accuracy of precipitation estimate b) determination between heavy rain, hail, snow, and sleet c) detection of non-meteorological echoes d) identification of the melting layer e) All from the above 7) Values above ___ indicates that the sample volume contains hail a) 45 dbz b) 60 dbz c) 55 dbz d) 70 dbz 8) Targets that are ____ or ___ have no radial velocity (select all that apply) a) stationary b) away from the radar c) towards the radar d) moving perpendicular to the radar beam 9) The higher gradient in the reflectivity values between the edge of the cell and core indicates a stronger storm. a) True b) False 10) What radar features indicate tropical cyclone? (select all that apply) a) Low reflectivity in the eye b) Small and circled shape echoes c) High reflectivity in eyewall d) High reflectivity band spiraling outward  e) Rotation 11) What radar signature indicates that strong, straight-line winds are possible?  a) Hook echo b) Bow echo  c) Rotation couplet 12) What radar features indicate that snow is occuring? (select all that apply) a) Low reflectivity values  b) Grainy texture  c) Distinct ecgo edge  d) Gradual change in reflectivity values  13) In which part of the tropical cyclone strongest winds are occurring?  a) In the eye of the tropical cyclone b) In the spiral rainbands  c) In the eyewall of the tropical cyclone 14) Hook echo on radar reflectivity indicates (select all that apply) a) Strong supercell thunderstorm b) Possibility of tornado occurrence  c) Snow storm

Weather radar quiz

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