A cross section of Earth reveals a layered structure that has different thicknesses and densities. How do geologists know this

asked Feb 3, 2023 177k views

22 votes

by NeilA

3.1k points

Please log in or register to add a comment.

12 votes

From observing the transit times through Earth of waves generated by earthquakes

Erdem Akkas answered Feb 9, 2023

4.8k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

4.4m questions

5.6m answers