Question

Explain the following terms : 1. Fault 2. Seismic Focus 3. Flash Floods 4. Landslides​

Answer 1

1. A fault is a planar crack or discontinuity in a volume of rock that has been displaced significantly due to rock-mass motions.

2. The seismic focus is a specific location; it is the geographic centre of the fault movement that resulted in the earthquake.

3. Flash floods occur when low-lying areas such as washes, rivers, dry lakes, and depressions are rapidly flooded.

4. When masses of rock, dirt, or debris slip down a slope, this is known as a landslide.

Explanation:

1. A fault plane is a plane that depicts a fault's fracture surface. A fault trace, also known as a fault line, is a location on the surface where the fault can be viewed or mapped. A fault trace is also the line that is usually used to show a fault on geologic maps.
2. An earthquake's point of origin within the Earth; usually a more or less constrained area of a fault surface.
3. Heavy rain connected with a strong thunderstorm, hurricane, tropical storm, or meltwater from ice or snow flowing across ice sheets or snowfields could all contribute to the flashflood.
4. Mudslides, also known as debris flows, are a typical type of fast-moving landslide that runs in channels.