Stony meteorites have a composition like that of the sun with volatile elements removed. (Ratios of refractory elements is similar to the sun's). Earth.
Internal Structure of the Earth : geology's most wildly speculative topic
1. What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks.
Chapter 4 Layers of the Earth Continental Drift Plate Tectonics Deformation of Earth’s Crust.
4. HOW THE GROUND SHAKES What happened in past quakes & will happen in future ones.
