Question

Forces deep within the earth constantly affect the surface, leading to the release of energy in the form of earthquakes. What instruments can detect strong earthquakes in any part of the world?

A) Thermometers
B) Barometers
C) Seismographs
D) Compasses

Answer 1

Seismographs are the instruments used to detect earthquakes globally, by measuring the differences in arrival times of P-waves and S-waves.

Step-by-step explanation:

The instruments that can detect strong earthquakes anywhere in the world are called seismographs. Seismographs are sensitive devices that can measure the arrival times of earthquake waves with high precision. They are used to determine the distance to an earthquake's epicenter by comparing the arrival times of the primary waves (P-waves) and the secondary waves (S-waves), which travel at different speeds through the earth's interior. This is crucial as earthquakes involve several types of wave disturbances, including surface waves and pressure disturbances under the surface. The correct answer to the question presented is C) Seismographs.