Every question from this NCERT chapter, with a detailed explanation.
With reference to Land and Sea Breezes, consider the following statements: 1. During the day, the pressure gradient is from the land to the sea. 2. During the night, the land loses heat faster than the sea. 3. Sea breeze blows from the sea to the land during the day. Which of the statements given above is/are correct?
In the context of global climatic phenomena, which of the following is the most likely impact of a strong El Niño event?
Tropical cyclones which cross 20° N latitude generally:
With reference to atmospheric pressure, consider the following statements: 1. The vertical pressure gradient force is much smaller than the horizontal pressure gradient force. 2. We do not experience strong upward winds because the vertical pressure gradient is balanced by the gravitational force. 3. Atmospheric pressure at any elevation varies from place to place, which is the primary cause of air motion. Which of the statements given above is/are correct?
Consider the following statements regarding the horizontal distribution of pressure: 1. Low-pressure systems are enclosed by one or more isobars with the lowest pressure in the center. 2. High-pressure systems are enclosed by isobars with the lowest pressure in the center. 3. Isobars are lines connecting places having equal pressure reduced to sea level. Which of the statements given above are correct?
Which of the following forces is NOT a primary factor affecting the velocity and direction of wind at the surface?
With reference to the Coriolis force, consider the following statements: 1. It deflects the wind to the left in the northern hemisphere and to the right in the southern hemisphere. 2. The force is directly proportional to the angle of latitude. 3. It is maximum at the poles and absent at the equator. Which of the statements given above is/are correct?
Consider the following statements regarding 'Geostrophic Wind': 1. It occurs when the pressure gradient force is balanced by the frictional force. 2. It typically blows parallel to the isobars. 3. It is a phenomenon observed mainly near the surface where friction is maximum. Which of the statements given above are correct?
In the context of wind circulation systems, which of the following pairs is correctly matched?
With reference to the vertical motion of air in pressure systems, consider the following statements: 1. Over a high-pressure area, the air will converge from above and rise at the surface. 2. Generally, over a low-pressure area, the air will converge and rise. 3. Divergence at the surface is essential for the formation of clouds and precipitation. Which of the statements given above is/are correct?
Consider the following statements regarding the Inter Tropical Convergence Zone (ITCZ): 1. It is a zone of low pressure. 2. The winds from the tropics diverge at this zone. 3. The converged air rises up to the top of the troposphere and moves towards the poles. Which of the statements given above are correct?
Consider the following statements regarding ENSO (El Nino Southern Oscillation): 1. It refers solely to the oceanic component of the El Nino phenomenon. 2. Southern Oscillation refers to pressure changes in the Central Pacific and Australia. 3. In years when ENSO is strong, the arid west coast of South America typically experiences heavy rainfall. Which of the statements given above is/are correct?
Consider the following statements regarding Mountain and Valley Winds: 1. During the day, air moves downslope, known as the mountain breeze. 2. During the night, cool air descends into the valley as the mountain wind. 3. Katabatic wind refers to the warm air rising from the valley floor. Which of the statements given above is/are correct?
Match List I with List II and select the correct answer using the code given below: List I (Air Mass Type) | List II (Code) A. Maritime tropical | 1. mT B. Continental tropical | 2. cP C. Maritime polar | 3. mP D. Continental polar | 4. cT
With reference to 'Fronts', consider the following statements: 1. A stationary front occurs when the front does not move. 2. A cold front is formed when warm air moves towards a cold air mass. 3. Fronts are characteristic features of middle latitudes. Which of the statements given above is/are correct?
In synoptic meteorology, the term “occluded front” refers to which of the following atmospheric situations?
Consider the following statements regarding Extra Tropical Cyclones: 1. They form exclusively in the tropical convergence zone. 2. They move from west to east. 3. They can originate over both land and sea. Which of the statements given above are correct?
In the formation of an Extra Tropical Cyclone, what happens when the pressure drops along the polar front?
Consider the following differences between Extra Tropical and Tropical Cyclones: 1. Tropical cyclones have a clear frontal system, while extra tropical cyclones do not. 2. Extra tropical cyclones cover a larger area than tropical cyclones. 3. Tropical cyclones originate only over the seas, while extra tropical cyclones can originate over land and sea. Which of the statements given above is/are correct?
Which of the following conditions is NOT favourable for the formation of tropical storms?
With reference to the structure of a mature tropical cyclone, consider the following statements: 1. The eye is a region of calm with subsiding air. 2. The eye wall is a region of calm winds and clear skies. 3. The diameter of the storm is typically between 600 and 1200 km. Which of the statements given above is/are correct?
What is the primary reason for the weakening and eventual dissipation of tropical cyclones after they move over land?
Which of the following statements regarding the movement of tropical cyclones is correct?
Consider the following statements about Thunderstorms: 1. They are caused by intense convection on moist hot days. 2. A thunderstorm is essentially a stratus cloud. 3. They are capable of producing hailstorms. Which of the statements given above is/are correct?
In meteorology, a tornado that forms over a body of water is referred to as which of the following?
Which of the following is the correct sequence of pressure belts from the Equator towards the Poles?
Consider the following statements regarding the frictional force on wind: 1. It is greatest at the surface. 2. Its influence generally extends up to an elevation of 10 - 15 km. 3. Over the sea surface, the friction is maximum. Which of the statements given above is/are correct?
The deflection of wind caused by the Coriolis force is more when:
Which of the following statements correctly describes the direction in which the Coriolis force acts?
Which of the following pairs of local winds is correctly matched with their nature?
In meteorology, the process known as ‘frontogenesis’ refers to which of the following?
Which of the following clouds are typically developed along the cold front in an extra tropical cyclone?
With reference to the vertical variation of pressure, consider the following statements: 1. Atmospheric pressure decreases with height. 2. The vertical pressure gradient is balanced by the Coriolis force. 3. At sea level, the average atmospheric pressure is 1,013.2 mb. Which of the statements given above is/are correct?
Which of the following instruments is used to measure atmospheric pressure?
In meteorology, isobars are lines drawn on weather maps to connect places having equal values of which of the following?
During the winter season in the Northern Hemisphere, what is the general latitudinal movement of the global pressure belts?
The Coriolis force is named after a physicist who belonged to which of the following countries?
In the Southern Hemisphere, the wind around a low-pressure system circulates in which direction?
Which of the following is essential for the formation of clouds and precipitation?
During the day, in mountainous regions, the wind that blows up the valley is known as:
In the standard classification of air masses based on source regions, the notation cA denotes which of the following?
When two different air masses meet, the boundary zone between them is called a:
In an extra tropical cyclone, the cold front moves:
In regional climatology, tropical cyclones are locally referred to as ‘Willy-willies’ in which of the following regions?
Which of the following is a characteristic of the 'Eye' of a tropical cyclone?
If there is insufficient moisture, a thunderstorm can generate: