Tag: elements of weather and climate :rainfall and air pressure

Questions Related to elements of weather and climate :rainfall and air pressure

Which cold local wind blows in Pampas region of South America?

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. Mistral

  2. Chinook

  3. Pampero

  4. Loo

Show answer
Correct Option: C
Explanation:
Pampero
The name given to severe line squalls in Argentina and Uruguay, particularly in the Rio de la Plata area. They are associated with marked cold fronts and are usually accompanied by rain, thunder, and lightning, a sharp drop in temperature and a sudden change of wind direction from northerly or northwesterly to southerly or south-westerly. They are most likely to occur during the period of June to September.

The local winds blow due to local variation in the temperature and pressure and influence a _____.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. Large area

  2. Medium area

  3. Small area

  4. Very small area

Show answer
Correct Option: D
Explanation:

Very small area,

The local winds moderates the climate of nearby areas with sudden increase or decrease in the temperature and humidity. In valleys of the mountains, two kinds of winds are particularly active - anabatic winds and katabatic winds.  These winds are result of differential heating of the land and the sea.

The instrument used to measure wind direction is called _____________.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. anemometer

  2. wind vane

  3. thermometer

  4. hygrometer

Show answer
Correct Option: B
Explanation:

The instrument which used to measure wind direction is called wind vane. It is generally located at the highest point of a building. This is pointed at the direction in which the wind is blowing. Wind vane is used to predict the weather of a particular place, as the direction of wind plays important role in determining weather of a place.

Wind vane is also known as _____________.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. anemometer

  2. hygrometer

  3. recorder

  4. weather cock

Show answer
Correct Option: D
Explanation:

A wind vane is an instrument that shows the direction of the wind. It is generally located at the highest point of a building. It is also known as a weather clock, as it is used to predict the weather of a particular place. The direction in which the wind is blowing plays a significant role in predicting the weather of that particular place.

Which of the following are ways to express wind speed?

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. Knots

  2. Kilometers per hour

  3. Meters per second

  4. All of the above

Show answer
Correct Option: D
Explanation:

The knot is a unit of speed equal to one nautical mile per hour, exactly 1.8 km/h (approximately 1.15 mph)

Name the instrument used to measure the speed of wind.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. Anemometer

  2. Wind vane

  3. Hygrometer

  4. Thermometer

Show answer
Correct Option: A
Explanation:

The term anemometer is derived from a Greek word 'anemos' which means wind. Anemometer is used to measure the speed of the wind. This instrument is used in all weather station. Tha standard height of the anemometer is 10meter in rural areas.

Wind forms as a result of difference in _______.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. humidity

  2. pressure

  3. temperature

  4. altitude

Show answer
Correct Option: B
Explanation:

Wind is been defined as air in horizontal motion caused by difference in pressure. There are two type of movement in the atmosphere : horizontal movement and vertical movement. Vertically moving air columns are known as currents. Winds are the means by which uneven distribution of pressure over the globe is balanced out .

Wind vane has a freely rotating arm which moves with the wind.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. True

  2. False

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Correct Option: A
Explanation:

Wind is always named by the direction from which they blow. Wind van is the most common type of instrument used to determine wind direction. So to measure wind direction wind van has a freely rotating arm which moves with the wind.

The speed of the wind is expressed in knots- one knot is equal to __________.

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. 1.20 Km per hour

  2. 1.85 Km per hour

  3. 12 Km per hour

  4. 18 Km per hour

Show answer
Correct Option: B
Explanation:

A knot is a unit of speed. It is abbreviated k tot kn. It is used around the world in meteorology and used for maritime and aviation purposes. One knot is the same as one nautical mile per hour. Therefore, one knot is equal to 1.1508 statute miles per hour (1.1508 mph or 1.852 kilometres per hour).

What are two basic wind measurements?

geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

  1. Direction and Pressure

  2. Pressure and Altitude

  3. Direction and Speed

  4. Pressure and Acceleration

Show answer
Correct Option: C
Explanation:

Direction and speed are the two basic wind measurements. Wind is always named by the direction from which it flows. The direction from which a wind blows is called windward side and towards which it blows is called Leeward did. The wind vane is the most common instrument to measure wind direction. The speed or flow velocity is an important atmospheric criterion. Wind generally blows high pressure towards the low-pressure areas due to temperature change. Anemometer is commonly used to measure wind speed.