Which One of the Following Statements Concerning Foci and Epicentres

question 19

Multiple Choice

Which one of the following statements concerning foci and epicentres is correct?

• A) The epicentre is at the surface directly above the focus where the earthquake initiates.
• B) The earthquake starts at the focus and the rupture extends down to the epicentre.
• C) The focus is the faulted point on the surface directly above the epicentre.
• D) The fault first cracks at the epicentre and breaks through to the surface at the focus.

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Definitions:

Pulse Pressure

The difference between systolic and diastolic blood pressure readings, indicating the force that the heart generates each time it contracts.

Left Atrium

The upper left chamber of the heart that receives oxygenated blood from the lungs and pumps it into the left ventricle.

Left Ventricle

The chamber of the heart responsible for pumping oxygenated blood to the body.

Mitral Valve

A valve in the heart that lies between the left atrium and the left ventricle, regulating blood flow.