GENERAL GEOLOGY

Detailed explanation-1: -Heavy rain, a broken dam or levee, rapid icemelt in the mountains, or even a beaver dam in a vulnerable spot can overwhelm a river and send it spreading over nearby land. The land surrounding a river is called a flood plain.

Detailed explanation-2: -For example, natural disasters caused by a geological process are called geological disasters; these are earthquakes, tsunamis, volcanic eruptions, and landslides. Disasters caused by weather-related factors are floods, landslides, droughts, forest fires, and tornadoes.

Detailed explanation-3: -Different disasters occur due to various causes. Causes for such calamities can be contributed to deforestation, soil erosion, and pollution. The major causes of catastrophic disasters are natural phenomena occurring in the earth’s crust as well as on the surface.

Detailed explanation-4: -Hazards noted include earthquakes, tsunamis, landslides, rockfalls, avalanches and flooding.