Question

Which statements describe a seismograph? Check all that apply.

A. It has a curved graphing surface.
B. It is used to locate an earthquake's epicenter.
C. It uses a needle on a graph paper to measure seismic wave activity.
D. It determines the arrival of P wave.
E. It measures data used to find the difference between the arrival times of surface waves.

Answer 1

C.

Step-by-step explanation:

Because it's giving a brief description of how it looks and what it's function is, which as listed a seismograph is used to record ground motion such as caused by earthquakes, volcanic eruptions and explosions.

Answer 2

Options (A), (B), and (D)

Step-by-step explanation:

Seismographs are the instruments that are used to determine the magnitude, force, and epicenter of an earthquake. It is commonly used by seismologists. It is comprised of a block (heavy-weight) that is held by a wire and below the weight, there uses a pen that records the amount of disturbance (data) on a curved surface of a graph during the time of occurrence of an earthquake. These data help in deriving the arrival of the P and S waves that enables seismologists or geologists to determine its epicenter.

Thus, the correct answers are options (A), (B), and (D).