Unit 6: Earth Science

Front

atmosphere

Back

air from our atmosphere

Front

hydrosphere

Back

water (oceans, lakes, streams, and ponds)

Front

lithosphere/ geosphere

Back

land (rocks and minerals, soil and sand)

Front

biosphere

Back

all life on Earth

Front

Layers of the Earth

Back

crust, mantle, outer core, inner core

Front

crust

Back

solid- thinnest layer and least dense layer of Earth

Front

Oceanic Crust

Back

denser than continental crust, located at the bottom of the oceans. Thinner than continental crust

Front

Continental Crust

Back

Located under land masses, less dense than oceanic crust, thicker layer than oceanic crust

Front

Mantle

Back

semi-solid, convection currents occur here. Convection currents are the reason why the crust moves.

Front

Outer Core

Back

Liquid- made up of iron and nickel