Atmospheric Extreme Events and Hazards

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1. High-intensity rainfall
2. Human interference with natural processes
3. Sediment load in rivers
4. Insufficient warning systems

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1. It intercepts falling raindrops and holds water
2. It encourages soil erosion
3. It increases the water accommodating capacity of rivers
4. It reduces the infiltration of rainwater

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1. Due to the presence of sharp bends in the river
2. Due to artificial cutoffs of individual bends
3. Due to the flat terrain they flow through
4. Due to the lack of vegetation along the riverbanks

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1. To impound enormous volumes of water during flood periods
2. To encourage soil erosion
3. To reduce the water accommodating capacity of rivers
4. To provide water for industrial purposes

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1. Lack of suitable locations for cutoffs
2. Insufficient funds to construct cutoffs
3. Lack of suitable materials for construction
4. Negative impact on natural processes

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1. By impounding enormous volumes of water during flood periods
2. By increasing the water accommodating capacity of rivers
3. By encouraging soil erosion
4. By reducing the infiltration of rainwater

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1. The Miami River
2. The Ganga River
3. The Missouri River
4. The Tennessee River

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1. To prevent floods from occurring
2. To minimise the impacts of floods
3. To increase the volume of water in rivers
4. To encourage soil erosion

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1. Evacuating the flood-prone areas
2. Seeking higher ground
3. Ignoring the flood warnings
4. Preparing emergency kits

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1. Stone spurs, semi-permeable spurs, pile spurs, revetments, and protective dikes
2. Construction of 16-km long embankments and the shifting of existing outfall of the Karala river
3. Both A and B
4. None of the above

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1. 1954
2. 1959
3. 1965
4. 1971

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1. To collect data of rainfall and discharge rate, gauge level or flood level from various data recording centers in the jurisdiction of each flood forecasting center.
2. To help in the forecasting of floods in major river basins of the country.
3. To warn the inhabitants of a particular river basin about the possible danger of floods much in advance.
4. All of the above.

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1. Wind speed
2. Temperature
3. Rainfall
4. Soil moisture

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1. Because they are directly related to one of the three basic requirements of any form of life, that is water.
2. Because they cause extensive and enormous damage to agriculture and natural vegetation and therefore cause famine and starvation of human and animal populations of the regions concerne
3. Both A and
4. None of the above.

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1. Wind
2. Soil type
3. Humidity
4. Air temperature

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1. 70%
2. 65%
3. 60%
4. 55%

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1. Annual and monthly rainfall less than 85% of normal rainfall
2. 21 days or more when rainfall is 30% or less of average rainfall
3. Period of 20 or more consecutive days without 0.25 inch precipitation in 24 hours (during March-September)
4. When rainfall for a week is half normal or less

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1. Mean annual rainfall is less than 75% of normal rainfall
2. Mean annual rainfall is less than 50% of normal rainfall
3. Mean annual rainfall is less than 85% of normal rainfall
4. Mean annual rainfall is less than 60% of normal rainfall

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1. Severe drought is when the deficiency of rainfall is between 25% and 50% of the normal rainfall, while moderate drought is when the deficiency of rainfall exceeds 50% of the normal rainfall.
2. Severe drought is when the deficiency of rainfall exceeds 50% of the normal rainfall, while moderate drought is when the deficiency of rainfall is between 10% and 25% of the normal rainfall.
3. Severe drought is when the deficiency of rainfall is between 25% and 50% of the normal rainfall, while moderate drought is when the deficiency of rainfall is between 50% and 75% of the normal rainfall.
4. Severe drought is when the deficiency of rainfall exceeds 50% of the normal rainfall, while moderate drought is when the deficiency of rainfall is between 25% and 50% of the normal rainfall.

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1. Decrease in population of certain animal species
2. Stiff competition for food among animals which results in the elimination of weaker animals
3. Natural control of plant and animal populations
4. Migration of animals to other places

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