Chapter 1- Plate Tectonics Flashcards
Define pressure.
The force exterted on a surface divided by the area over which the force is exerted.
Define seismic waves.
Vibrations that Travel through earth carrying
Define crust.
The layer of rock that forms Earth’s outer surface.
Define basaltic.
A dark, dense, igneous rock with a fine texture, found in oceanic crust.
Define granite.
A usually light-colored igneous rock that is found in continental crust.
Define mantle.
The layer of hot, solid material Earth’s crust and core.
Define lithosphere.
A rigid layer made up of the uppermost part of the mantle and the crust.
Define asthenosphere.
The soft layer of the mantle on which the lithosphere floats.
Define outer core
A layer of molten iron and nickel that surrounds the inner core of earth.
Define inner core.
A dense sphere of solid iron and nickel at the center of Earth.
