Meteorology Concepts Quiz
45 Questions
3 Views

Meteorology Concepts Quiz

Created by
@GutsyGardenia

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the process called by which water vapor in the air is changed directly to solid without becoming liquid?

  • Deposition
  • Condensation
  • Sublimation (correct)
  • Evaporation

    • Which factor is primarily responsible for adiabatic cooling, which leads to condensation?

  • Stagnation of airflow
  • Increase in atmospheric pressure
  • Expansion of an air mass (correct)
  • Decrease in temperature

    • What are condensation or sublimation nuclei typically composed of?

  • Particulate matter (correct)
  • Liquid droplets
  • Water vapor particles
  • Homogeneous gases

    • What are the usual forms of precipitation that fall back to the earth’s surface?

    <p>Rain, snowfall, hail, frost, dew</p> Signup and view all the answers

    What causes upward motion of air masses, leading to storm or precipitation events?

    <p>Adiabatic cooling</p> Signup and view all the answers

    Which of the following options does NOT describe a cause of condensation or sublimation?

    <p>Temperature increase</p> Signup and view all the answers

    What is the initial process in the formation of precipitation?

    <p>Condensation of water vapor</p> Signup and view all the answers

    Which component is a common nucleating agent for condensation in the atmosphere?

    <p>Ocean salt</p> Signup and view all the answers

    What is the primary factor that leads to the formation of fog at night?

    <p>Cooling of the bottom air</p> Signup and view all the answers

    What must be present in the atmosphere for precipitation to occur?

    <p>Moisture and condensation nuclei</p> Signup and view all the answers

    What defines 'heavy rain' in terms of intensity?

    <blockquote> <p>7.5 mm/hr</p> </blockquote> Signup and view all the answers

    Which process describes how cloud droplets combine to form larger drops?

    <p>Collision-coalescence process</p> Signup and view all the answers

    What type of precipitation occurs when rain or drizzle meets cold ground at 0 degC?

    <p>Glaze</p> Signup and view all the answers

    Which of the following descriptions pertains to sleet?

    <p>Frozen raindrops of transparent grains</p> Signup and view all the answers

    What causes convective precipitation?

    <p>Differential heating of air masses</p> Signup and view all the answers

    Which characteristic best describes graupel?

    <p>Fragile snow pellets that disintegrate easily</p> Signup and view all the answers

    What method involves calculating the average of rainfall by treating it as the arithmetic mean of station values?

    <p>Arithmetic Mean Method</p> Signup and view all the answers

    Which method assigns weightage to rainfall recorded at each station based on proximity to the station?

    <p>Thiessen Polygon</p> Signup and view all the answers

    In the Isohyetal Method, how is the average value of rainfall over an inter-isohyet area determined?

    <p>By calculating the area of two adjacent isohyets</p> Signup and view all the answers

    What is essential to test data consistency when analyzing rainfall records?

    <p>Double-mass curve analysis</p> Signup and view all the answers

    When organizing rainfall data from various stations, what geographic coordinates are typically recorded?

    <p>Northings and Eastings</p> Signup and view all the answers

    What is orographic precipitation primarily influenced by?

    <p>Topography</p> Signup and view all the answers

    What is the main cause of cyclonic precipitation?

    <p>Convergence of air flow due to low pressure</p> Signup and view all the answers

    How much of the total rainfall in the Philippines is attributed to cyclonic precipitation?

    <p>80% or more</p> Signup and view all the answers

    Which city receives the least amount of average annual rainfall in the Philippines?

    <p>General Santos City</p> Signup and view all the answers

    Which of the following is NOT a requirement for setting up a rain gauge?

    <p>The gauge should be on a slope</p> Signup and view all the answers

    Which type of rain gauge uses buckets to measure precipitation?

    <p>Tipping-Bucket Gauge</p> Signup and view all the answers

    What is the maximum allowable distance an object should be from a rain gauge?

    <p>30 meters or twice the height of obstruction</p> Signup and view all the answers

    Which term refers to instruments like pluviometer and hyetometer?

    <p>Measurement devices</p> Signup and view all the answers

    What is the primary function of a weighing-bucket type rain gauge?

    <p>To plot accumulated rainfall against elapsed time</p> Signup and view all the answers

    Which recording type is identified as a float-type gauge?

    <p>Natural-Siphon Type</p> Signup and view all the answers

    What is the ideal rain gauge station density for flat regions in tropical zones?

    <p>1 station for 600 to 900 sq.km</p> Signup and view all the answers

    In mountainous regions, how many stations are considered acceptable per 100 sq.km?

    <p>1 station for 25 to 1000 sq.km</p> Signup and view all the answers

    What percentage of rain gauge stations should be self-recording to measure rainfall intensity according to WMO recommendations?

    <p>10%</p> Signup and view all the answers

    How is the optimal number of rain gauge stations (N) determined in relation to the existing stations (m)?

    <p>N is computed using the coefficient of variation (Cv)</p> Signup and view all the answers

    What type of gauge uses microwave energy to measure rainfall?

    <p>Radar Measurement of Rainfall</p> Signup and view all the answers

    What is the common percentage of error typically taken when calculating the number of rain gauges needed?

    <p>10%</p> Signup and view all the answers

    What procedure should be applied if the normal annual precipitations at various stations differ by more than 10% from station X?

    <p>Normal Ratio Method</p> Signup and view all the answers

    Which of the following is NOT a common cause of inconsistency in rainfall records?

    <p>Change in local government policies</p> Signup and view all the answers

    In the context of testing consistency, what does a Double-Mass Curve aim to establish?

    <p>Consistency of recorded data from the same parent population</p> Signup and view all the answers

    What graphical representation of rainfall data is derived from the mass curve and shows intensity versus time?

    <p>Hyetograph</p> Signup and view all the answers

    Which method involves selecting 5 to 10 base stations to test the consistency of a problem station's data?

    <p>Double-Mass Curve Method</p> Signup and view all the answers

    What is the purpose of using a moving average in analyzing rainfall data?

    <p>To smooth out high frequency fluctuations</p> Signup and view all the answers

    What does point rainfall refer to in the presentation of rainfall data?

    <p>Data representing rainfall from a single station</p> Signup and view all the answers

    What is the primary focus when estimating missing data from a rain station?

    <p>Performance of neighboring stations</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser