Write 2 causes for the following : 1. Floods 2. Land Slides 3. Storms
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Answer:
1. Floods - Heavy Rains. The simplest explanation for flooding is heavy rains. ...
Overflowing Rivers. ...
2. Land Slides-A landslide is any geologic process in which gravity causes rock, soil, artificial fill or a combination of the three to move down a slope. Several things can trigger landslides, including the slow weathering of rocks as well as soil erosion, earthquakes and volcanic activity.
3. Storms-The basic ingredients used to make a thunderstorm are moisture, unstable air and lift. You need moisture to form clouds and rain. You need unstable air that is relatively warm and can rise rapidly.
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Answer:
Floods
1. Heavy Rains
When it rains heavily, however, those systems are overwhelmed, and that water doesn’t drain nearly as quickly as it needs to. In short, the drainage systems back up, and the water rises — sometimes into homes. This typically happens only in cases of sustained heavy rains over a long period.
2. Overflowing Rivers
You do not necessarily need to have heavy rains to experience flooding in your area. For example, if you live along a river and areas upstream from you experience heavy rains, it could lead to a serious overflow where you live. Most larger rivers include a series of dams to help manage large amounts of rainfall, and most river systems are managed by government authorities.
Landslides
1. Earthquakes
Seismic activities have, for a long time, contributed to landslides across the globe. Any moment tectonic plates move, the soil covering them also moves along. When earthquakes strike areas with steep slopes, on numerous occasion, the soil slips leading to landslides. In addition, ashen debris flows instigated by earthquakes could also cause mass soil movement.
2. Weathering
Weathering is the natural procedure of rock deterioration that leads to weak, landslide-susceptive materials. Weathering is brought about by the chemical action of water, air, plants and bacteria. When the rocks are weak enough, they slip away causing landslides.
Storms
The rotational movement of cold and warm air in the atmosphere is centered around an area of low air pressure that is surrounded by a high pressure system. The movement of the earth and the atmosphere starts this rotation, which then generates wind that is centered around it. The winds rotate clockwise in the southern hemisphere and counter-clockwise in the northern hemisphere.
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