The two main ways that scientists learn about Earth's interior is by studying the data collected by body waves and surface waves. The body waves travel in the interior part of the earth in all direction while the surface waves travel along the surface of the Earth. Now these body waves can travel through all liquids and solids while the surface waves can travel through only solids. The physical characteristics studied are density and state of material to which these waves respond and studying their seismographic recording would give a description of the composition of the Earth’s interior.
The two ways that scientists learn about Earth's interior is through the studying of the data that are collected by body waves and surface waves.
It should be noted that the body waves travel in the interior part of the earth while on the other hand, the surface waves travel along the surface of the Earth.
A surface wave refers to a wave that is a mechanical wave that travels along the Earth's surface.
The density and the state of material to which the waves respond are studied by scientists. This can be used in learning about the interior of the Earth.
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