Which of the following statements regarding earthquakes is/are correct ? 1. The point on the Earth's surface directly above the focus is called the epicentre of the earthquake. 2. Earthquakes generate Primary and Secondary waves that radiate outward from the earthquake focus. 3. Deep-focus earthquakes are likely to cause more damage than shallow-focus earthquakes. Select the answer using the code given below :
- A.1 only
- B.1 and 2 only
- C.2 and 3 only
- D.1, 2 and 3
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The focus, or hypocentre, is the point inside the Earth where the rocks first break and energy is released. The point on the surface directly above it is the epicentre, which is usually where shaking is felt first and strongest, so statement 1 is correct.
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