Question 9
the focus of an earthquake is the what?

a. strength of the earthquake

b. place at earth's surface where the earthquake happens

c. point within earth where an earthquake originates

d. the types of rocks affected by an earthquake

C. point within Earth where an earthquake originates

Explanation:

The point on Earth's surface directly above the focus is the epicenter of the earthquake.

C. point within where an earthquake originates

Explanation: the focus in the earthquake is the point in the interior of the earth from where the earthquake originates

its temperature is increasing. this causes molecular vibrations to increase.