EARTH SCIENCE
NATURAL HAZARDS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tornado happens
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Flash flood happens
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Drought happens
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None of the above
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Detailed explanation-1: -As rain falls over an extended period, the ground becomes saturated with water until it cannot absorb any more. When this happens, water rises above the ground’s surface and causes flooding. This type of flooding can last for weeks or sometimes even months.
Detailed explanation-2: -Large debris and floodwaters can cause structural damage to bridges and roadways, making travel impossible. Power, telephone, and cable lines can be taken out by flash floods as well. Flood waters can disrupt or contaminate ground water, making tap water unfit for consumption.
Detailed explanation-3: -Flooding also reduces the soil redox potential, increases the pH of acid soils (largely because of a change of Fe3+ to Fe2+), and decreases the pH of alkaline soil (mainly because of CO2 accumulation which eventually forms H2CO3).
Detailed explanation-4: -If You Suspect a Flash Flood, Immediately Head to Higher Ground. Keeping your safety in mind, warn those around you and get to the highest point possible. As little as 6 inches of rushing water can sweep you downstream, so do everything you can to stay away from running flood waters.
Detailed explanation-5: -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.