Features of Earth's Crust
Geologists how they study Earth
seismic waves- caused by earthquakes waves flowing through the earth.
basalt- a dark colored igneous rock that is fine grained.
granite- a light colored rock that the grains a big enough to be visible.
lithosphere- the outer part of earth including the crust.
asthenosphere- the deforming mantle of earth it lies below the lithosphere.