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Weather balloon: Quiz

  
  

Question 1: Weather balloons are sometimes cited as the cause for ________ sightings, and are also used for cluster ballooning.
UfologyUFO conspiracy theoryUnidentified flying objectExtraterrestrial hypothesis

Question 2: Weather balloons are launched around the world for observations used to diagnose current conditions as well as by human forecasters and computer models for ________.
METARWeather forecastingMeteorologyOcean Surface Topography Mission

Question 3: To obtain wind data, they can be tracked by radar, radio direction finding, or navigation systems (such as the satellite based ________ also known as a GPS).
Inertial navigation systemF-15 EagleGlobal Positioning SystemCompass

Question 4: The balloon is usually filled with hydrogen due to lower cost, though ________ can be used as a substitute.
XenonHeliumOxygenNitrogen
















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