Droughts occur when an abnormally long dry period uses up available water resources . Floods happen when watercourses or rain swallow up land that is usually uncovered. These natural disasters are often made worse by human action. ... As it builds up on the surface, the water ends up causing widespread damage.
What is drought and flood Class 10?
Hint: Droughts happen when available water supplies are used up by an abnormally long dry spell . When watercourses or rain swallow up land that is normally exposed, floods happen. ... The water ends up causing widespread harm as it builds up on th8e surface.
What is the difference between flood and drought?
| Flood Drought | It occurs through heavy rainfall. It occurs through no rainfall. | It is often held in the coastal Andhra Pradesh & Odisha. The dry region seen in leeward side of Western ghats. |
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What is drought explain?
Defining Drought. Drought is generally defined as “ a deficiency of precipitation over an extended period of time (usually a season or more), resulting in a water shortage .”
What is flood explain?
Overview. Floods are the most frequent type of natural disaster and occur when an overflow of water submerges land that is usually dry. Floods are often caused by heavy rainfall, rapid snowmelt or a storm surge from a tropical cyclone or tsunami in coastal areas.
What are the three effects of floods?
Floods have large social consequences for communities and individuals. As most people are well aware, the immediate impacts of flooding include loss of human life, damage to property, destruction of crops, loss of livestock, and deterioration of health conditions owing to waterborne diseases .
What is short flooding?
A flood is an overflow of water that submerges land that is usually dry . ... Floods can also occur in rivers when the flow rate exceeds the capacity of the river channel, particularly at bends or meanders in the waterway. Floods often cause damage to homes and businesses if they are in the natural flood plains of rivers.
How can we prevent drought and floods?
Forests can soak up excess rainwater , preventing run-offs and damage from flooding. By releasing water in the dry season, forests can also help provide clean water and mitigate the effects of droughts.
What are the effects of flood and drought?
Examples of drought impacts on society include anxiety or depression over economic losses , conflicts when there is insufficient water, lower incomes, fewer recreational activities, higher heat stroke incidents and even loss of human life.
How do human activities cause droughts and floods?
Humans cause and exacerbate flooding due to urban development, destruction of natural wetlands and deforestation . Urban development causes water runoff into streams during heavy rain, and this runoff causes higher flood peaks and more frequent floods.
What are the main causes of drought?
A lack of water in stores such as rivers, lakes, reservoirs and aquifers (water stored underground naturally) can lead to drought. Areas that rely on rainfall and surface water are more likely to experience drought. Surface water quickly evaporates in warm, dry conditions leading to an increased risk of drought.
What is drought and its effects?
A drought is a period of time when an area or region experiences below-normal precipitation . The lack of adequate precipitation, either rain or snow, can cause reduced soil moisture or groundwater, diminished stream flow, crop damage, and a general water shortage. ... Droughts affect people in a several ways.
What are 4 types of drought?
As a result, the climatological community has defined four types of drought: 1) meteorological drought, 2) hydrological drought, 3) agricultural drought, and 4) socioeconomic drought.
What are 5 causes of floods?
- Massive Rainfall. Drainage systems and the effective infrastructure design aid during heavy rains. ...
- Overflowing of the Rivers. ...
- Collapsed Dams. ...
- Snowmelt. ...
- Deforestation. ...
- Climate change. ...
- Emission of Greenhouse Gases. ...
- Other Factors.
Who is responsible for floods?
Water companies are Risk Management Authorities (RMAs) and play a major role in managing flood and coastal erosion risks. They manage the risk of flooding to water supply and sewerage facilities and flood risks from the failure of their infrastructure.
How can we prevent flood?
- Create a ‘sponge city’ ...
- Green roofs/rooftop gardens. ...
- Create flood plains and overflow areas for rivers. ...
- Separating rainwater from the sewer system. ...
- Install water infiltration and attenuation systems. ...
- Keep the sewer system clean, so it can do its job.
