Final answer:
Scientists use core samples, earthquakes, and composition analysis to study the Earth's interior.
Step-by-step explanation:
Scientists use a variety of sources to study the interior of Earth. One such source is core samples, which are collected from drilling into the Earth's crust. Another source is earthquakes, which produce seismic waves that can provide valuable information about the Earth's structure. Additionally, scientists study the composition of rocks and minerals to understand the composition of the Earth's interior.
Learn more about Studying the interior of Earth