From which of the following is knowledge of Earth's interior mostly derived?
A)Direct sampling of the interior using deep-test wells.
B)Work in Earth's deepest caverns and caves.
C)Indirect evidence involving the analysis of seismic waves.
D)Historic and prehistoric records.

Question

Quizplus · Accepted Answer

Indirect evidence involving the analysis of seismic waves is the primary method for studying Earth's interior. Seismic waves are generated by earthquakes and other sources and can provide information about Earth's composition and structure based on how they travel through it. Direct sampling of the interior is limited to a few locations where deep-test wells have been drilled, but these samples provide only a small amount of information compared to seismic data. Work in caves and caverns can provide insights into surface processes but does not reveal much about the deep interior. Historic and prehistoric records are not relevant to studying Earth's interior.

From Which of the Following Is Knowledge of Earth's Interior