Question

1.
What point along the fault where movements first occur?
A. Epicenter B. Focus C. Intensity
D. Magnitude
SYTY
+1
כהונה​

Answer 1

Answer:

Q. 1 – Q.10 carry one mark each. 1. ... large magnitude earthquake occurred during past 100 yrs? ... (B) 3. (C) 6. (D) 4. 2. The San Andreas Fault is an example of: (A) Normal fault.

Answer 2

Answer:

(A) Epicenter

Explanation:

Epicenter: Epicenter is a point which is present on the surface of the Earth and is directly above the underground point (called the focus) where fault rupture commences, producing an earthquake and also it is a point along the fault where movements first occur.

Focus: The focus is the place which is present inside the Earth's crust from where an earthquake originates. The point on the Earth's surface directly above the focus is called as the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.

Intensity: Earthquake intensity scales describe the severity of an earthquake's effects on the Earth's surface, humans and buildings at different locations in the area of the epicenter. There can be multiple intensity measurements. The Modified Mercalli Scale measures the amount of shaking at a particular location.

Magnitude: Magnitude is the most common measure of an earthquake's size. It is a measure of the size of the earthquake source and is the same number no matter where you are or what the shaking feels like.

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