Question

Volcanic eruptions affect many populated areas.

Answer 1

Answer:

c. Frequency of localized earthquakes

Explanation:

• As the volcanoes erupt they erupt with a great force and bring the lavas and the molten matter for the earth's mantle to the surface and thus they release dust and gases and ash and other components include their association with the earthquakes and intensity is measured by the various seismographs. Due to the collusion of the plate and the shaking the ground.

Answer 2

Answer:

Option (C)

Explanation:

The eruption of a volcano is directly related to the occurrence of earthquakes. Earthquakes refer to the sudden shaking of the earth, which occurs due to the plate tectonic movement, where the tectonic plates move over the viscous layer of the asthenosphere. These plates share three types of boundaries such as the transform, divergent and convergent types, which are responsible for the occurrence of deep-focus and shallow-focus earthquakes.

Geologists study these plate boundaries and determines the frequency of earthquakes in the nearby areas. By analyzing this frequency, it can be determined at what rate the fault movement is taking place and under what condition the magma is rising upward in a volcano, and from these data, they can predict the occurrence of a volcanic eruption.

Thus, the correct answer is option (C).