Unit 5 Vocab: Density, Convection and Tectonics

Front

Mass

Back

Amount of matter in an object. Measured in grams, kilograms.

Front

Volume

Back

Amount of 3D space an object occupies. Measured in cm3 or m3, mL or L.

Front

Density

Back

How condensed matter is in a given space. Can be used to determine the identity of a substance under same conditions. Measured in g/cm3 or g/ml.

Front

Lithosphere

Back

Uppermost part of mantle and crust; solid, brittle rock below crust. Tectonic plates made up of lithosphere.

Front

Asthenosphere

Back

Viscous mantle (just below lithosphere) that moves slowly with convection currents, moves tectonic plates.

Front

Magma

Back

Molten rock underground.

Front

Lava

Back

Molten rock that has erupted to earth’s surface.

Front

Volcano

Back

Mountain through which magma, gases, etc escape through earth’s crust. Eruptions occur where crust is thin, pressure builds up.

Front

Convergent boundaries

Back

Plates move together and collide.

Front

Divergent boundaries

Back

Plates move away from each other, magma rises and creates new crust.