Tectonic Plates Flashcards
Pressure
The force exerted on a surface divided by the area over which the force is exerted
Seismic waves
Vibrations that travel through earth carrying the energy released during an earthquake
Crust
The layer of rock that forms earths outer surface
Basalt
A dark dense igneous rock with a fine texture found in oceanic crust
Granite
A usually light colored igneous rock that is found in continental crust
Mantle
The layer of hot solid material between earths crust and core
Lithosphere
A rigid layer made up of the uppermost part of the mantle and the crust
Asthenosphere
The soft layer of the mantle on which the lithosphere floats
Outer core
A layer of molten iron and nickel that surrounds the inner core of earth
Inner core
A dense sphere of solid iron and nickel at the center of earth