Mantle- Layer of the Earth between the crust and the core

Ozone- A molecule made up of three oxygen molecules

Fault- Break in the Earth’s crust

Salinity- The total quantity of dissolved salts in the ocean

Tributaries- Smaller streams or rivers that flow into larger ones

Tectonic Plates- The pieces that compose the lithosphere

Thermocline- Boundary between warm and cold water in an ocean or a lake

Volcano- A mountain built from magma

Surface Currents- Water movements in the ocean that are driven by the wind

Radiation- Transfer of energy through space

Atmosphere- The part of Earth that contains the air we breathe

Crust- The thin outermost layer of the solid Earth

Volcanoes occur at tectonic plate boundaries that are colliding and separating from one another.

Erosion is the removal and transport of surface material by wind and water.

The stratosphere is the atmospheric layer above the troposphere.

The Earth’s most abundant gases in the atmosphere are nitrogen and oxygen.

The transfer of heat by air currents (or currents in a liquid) is called convection.

The warmest temperature zone of the ocean is the surface zone.

Stream-like movements of cold, dense water near the ocean floor are called deep currents.

One of the most important roles of the ocean is to absorb ultraviolet radiation.

The narrow layer of Earth where life-supporting conditions exist is called the biosphere.

With respect to matter, Earth is mostly a closed system.