GEOLOGY

Detailed explanation-1: -Knowing how the waves behave as they move through different materials enables us to learn about the layers that make up the Earth. Seismic waves tell us that the Earth’s interior consists of a series of concentric shells, with a thin outer crust, a mantle, a liquid outer core, and a solid inner core.

Detailed explanation-2: -Seismic stations located all around on Earth’s surface detect and record the strengths of these different seismic waves from earthquakes. Geologists use this data to understand the structure of Earth’s much like how an X-ray can “see” the structure of your bones without physically going inside your body.

Detailed explanation-3: -Seismic and the Earth. they came. Geologists use these records to establish the structure of Earth’s interior. The two principal types of seismic waves are P-waves (pressure; goes through liquid and solid) and S-waves (shear or secondary; goes only through solid-not through liquid).

Detailed explanation-4: -These recordings made by a seismograph are called seismograms. Seismic waves travel at different speeds when they pass through different types of material, so by studying seismograms, scientists can learn a lot about Earth’s internal structure.