Causes and Types of Flood

Q. Flood caused due to overflow of river due to excessive rainfall which causes a river to exceed its capacity is called flood.

1. riverine
2. coastal
3. surface

Q.

Discuss problems associated with construction of dams.

Q. How do reservoirs cause floods?

1. The water holding capacity is surpassed by melting of snow.
2. The water holding capacity is surpassed by heavy rainfall
3. The water holding capacity is surpassed by rise in sea level
4. None of these

Q.

Which of the following is an environmental consequence of floods?

1. Dispersal of weed species
2. Release of pollutants into waterways
3. Erosion of soil
4. All of the above

Q. Which of the following is a man-made cause for floods?

1. Deforestation
2. Heavy rainfall
3. Tsunami
4. Volcanic eruptions

Q. Which of the following are natural causes of floods?

1. Heavy rainfall
2. Deforestation
3. Melting of snow
4. The rise in sea level

Q. The flood that is due to the direct consequences of any human action can be classified as man-made flood.

1. False
2. True

Q. Flood caused due to the over flowing of river or any other water bodies is classified as natural flood.

1. False
2. True

Q. One of the purpose to construct dams is to reduce flooding by __________.

1. protecting river banks from erosion
2. providing storage for flood water
3. not trapping sediments
4. increasing the downstream velocity of flood water

Q. Cloudburst or heavy rains give birth to which of the following disaster.

1. Flood
2. Earthquake
3. Storms
4. Forest Fires

Q.

Deforestation results in which of the following?

1. Drought
2. Soil erosion
3. All of these
4. Floods

Q. What are the main man-made causes of flood?

1. Global warming
2. Drip irrigation
3. Pollution
4. Rainwater harvesting

Q. is one of the causes of flood.

1. Global warming
2. Afforestation
3. Soil erosion

Q. Among the given options, which is not a cause of flood?

1. Cloudburst
2. Tsunami
3. Heavy rain
4. Chemical disaster

Q. When do reservoirs cause flood?

1. When the water level is below the holding capacity.
2. When the water holding capacity is surpassed.
3. When the reservoir is completely empty.
4. When there is a less rainfall.