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 (A)</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 (B)</p> Signup and view all the answers

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

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

What is the typical diameter of a tropical cyclone?

<p>100-200 km (B)</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 (C)</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 (B)</p> Signup and view all the answers

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

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

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

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

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

<p>Clockwise (B)</p> Signup and view all the answers

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

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

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

<p>0.1 (A)</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 (A)</p> Signup and view all the answers

What type of precipitation is typical of the tropics?

<p>Convectional precipitation (D)</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 (D)</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 (D)</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 (C)</p> Signup and view all the answers

Where are cyclones formed in the case of EXTRATROPICAL CYCLONE?

<p>Outside the tropical zone (D)</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 (A)</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 (C)</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 (C)</p> Signup and view all the answers

What occurs as a result of dynamic cooling?

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

What is the primary factor influencing orographic precipitation?

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

What is the purpose of rainmaking?

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

What creates the pressure differences leading to cyclonic precipitation?

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

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

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

What is the goal of seeding clouds with catalysts?

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

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