About Dan Expertise I love science to the end of this world. Why not make science fun? Ask me questions and I will try to answer. I study very hard in science, yet I admit I do not know everything. No one does.
Question How do scientists determine the composition of the Earth's interior?
Answer Great question. You may want to ask in the geology area on this site, yet in simple they use waves. I think and I am rusty with this, yet they use an S wave. The idea goes with earthquakes. An earthquake feels different depending on what type of material. Good luck and ask in the geology area.
