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

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

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

  1. Mistral

  2. Chinook

  3. Pampero

  4. Loo
Reveal answer Fill a bubble to check yourself
C Correct answer
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.
Multiple choice geography winds pressure belts elements of weather and climate :rainfall and air pressure monsoon phenomena and its mechanism

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

  1. Large area

  2. Medium area

  3. Small area

  4. Very small area
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

The instrument used to measure wind direction is called _____________.

  1. anemometer

  2. wind vane

  3. thermometer

  4. hygrometer
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Wind vane is also known as _____________.

  1. anemometer

  2. hygrometer

  3. recorder

  4. weather cock
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Name the instrument used to measure the speed of wind.

  1. Anemometer

  2. Wind vane

  3. Hygrometer

  4. Thermometer
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Wind forms as a result of difference in _______.

  1. humidity

  2. pressure

  3. temperature

  4. altitude
Reveal answer Fill a bubble to check yourself
B Correct answer
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 .

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

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. 1.20 Km per hour

  2. 1.85 Km per hour

  3. 12 Km per hour

  4. 18 Km per hour
Reveal answer Fill a bubble to check yourself
B Correct answer
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).

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

What are two basic wind measurements?

  1. Direction and Pressure

  2. Pressure and Altitude

  3. Direction and Speed

  4. Pressure and Acceleration
Reveal answer Fill a bubble to check yourself
C Correct answer
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.