Engineering Hydrology: Precipitation
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Questions and Answers

What is the primary form of precipitation responsible for stream flow in a majority of rivers in India?

  • Hail
  • Snowfall
  • Frost
  • Rainfall (correct)
  • What is the term used to describe the study of precipitation?

  • Hydrometeorology (correct)
  • Hydrology
  • Meteorology
  • Climatology
  • What is the minimum requirement for precipitation to form?

  • Moisture in the atmosphere, nuclei, and weather conditions
  • Moisture in the atmosphere, nuclei, weather conditions, and condensation (correct)
  • Moisture in the atmosphere and weather conditions
  • Moisture in the atmosphere, nuclei, and condensation
  • What is the typical size of water droplets formed through condensation?

    <p>Less than 0.1 mm in diameter</p> Signup and view all the answers

    What is the main reason for hydrological problems such as floods and droughts?

    <p>Variation in precipitation magnitude</p> Signup and view all the answers

    What are the two forms of precipitation that contribute significant amounts of water?

    <p>Rainfall and snowfall</p> Signup and view all the answers

    What is the characteristic wind circulation pattern in the northern hemisphere associated with a frontal system?

    <p>Counter-clockwise</p> Signup and view all the answers

    What is the typical diameter of a tropical cyclone?

    <p>100-200 km</p> Signup and view all the answers

    How do the magnitude of precipitation and wind velocities of a frontal system compare to those of a tropical cyclone?

    <p>They are lower</p> Signup and view all the answers

    What is the direction of the winds in the northern hemisphere during a tropical cyclone?

    <p>Anti-clockwise</p> Signup and view all the answers

    What is a characteristic of a tropical storm (TS)?

    <p>Wind speed of 62 to 88 kph</p> Signup and view all the answers

    What happens to the wind speed of a tropical cyclone as it moves inland?

    <p>It decreases</p> Signup and view all the answers

    What is the characteristic wind circulation pattern in the northern hemisphere associated with an anticyclone?

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

    What is the name of the centre of a tropical cyclone?

    <p>The eye</p> Signup and view all the answers

    What is the average density of fresh snow in g/cm3?

    <p>0.1</p> Signup and view all the answers

    What is the classification of a tropical cyclone with maximum sustained winds of up to 61 kilometers per hour?

    <p>TROPICAL DEPRESSION</p> Signup and view all the answers

    What type of precipitation is typical of the tropics?

    <p>Convectional precipitation</p> Signup and view all the answers

    What is the characteristic of drizzle in terms of water droplet size and intensity?

    <p>Small droplets, low intensity</p> Signup and view all the answers

    What is the result of the heating of air at the interface with the ground in the tropics?

    <p>Air expansion and weight reduction</p> Signup and view all the answers

    What forms when rain or drizzle comes in contact with cold ground at around 0°C?

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

    Where are cyclones formed in the case of EXTRATROPICAL CYCLONE?

    <p>Outside the tropical zone</p> Signup and view all the answers

    What is the characteristic of hail in terms of size and formation?

    <p>Large, irregular pellets or lumps</p> Signup and view all the answers

    What is the characteristic of rain in terms of droplet size and duration?

    <p>Large droplets, continuous or steady precipitation</p> Signup and view all the answers

    What is the characteristic of sleet in terms of formation and appearance?

    <p>Forms in cold air, appears transparent</p> Signup and view all the answers

    What occurs as a result of dynamic cooling?

    <p>Condensation and precipitation</p> Signup and view all the answers

    What is the primary factor influencing orographic precipitation?

    <p>Land elevation</p> Signup and view all the answers

    What is the purpose of rainmaking?

    <p>To remove or lessen farmland drought</p> Signup and view all the answers

    What creates the pressure differences leading to cyclonic precipitation?

    <p>Unequal heating of the earth's surface</p> Signup and view all the answers

    What type of front occurs when cold air displaces warm air?

    <p>Cold front</p> Signup and view all the answers

    What is the goal of seeding clouds with catalysts?

    <p>To make clouds rain or increase precipitation</p> Signup and view all the answers

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