Question

Define.(1)earthquake (2)tsunami(3)flood(4)landslide. plz be fast.....​

Answer 1

1. A violent Movement in the Earth's surface is called earthquake
2. A very large wave in the sea which destroys things when it reaches the land is called tsunami
3. A large amount of water that has spread from a river, the sea, etc. that covers an area of land is called flood
4. The sudden fall of a mass of earth, rocks, etc. down the side of a mountain is called landslide.

Answer 2

Explanation:

1. Earthquake is the a natural disaster .Earthquakes are caused by a sudden release of stress along faults in the earth's crust. The continuous motion of tectonic plates causes a steady build-up of pressure in the rock strata on both sides of a fault until the stress is sufficiently great .
2. Tsunami is also a natural disaster .Tsunami are waves caused by sudden movement of the ocean surface due to earthquakes, landslides on the sea floor, land slumping into the ocean, large volcanic eruptions or meteorite impact in the ocean.
3. Severe flooding is caused by atmospheric conditions that lead to heavy rain or the rapid melting of snow and ice. Geography can also make an area more likely to flood. For example, areas near rivers and cities are often at risk for flash floods.
4. In landslide a layer of soil slides down due to earthquake , melting of snow , rainfall , disturbance by human activities or any combination of these factors.