Science Ch 19

Front 1

abyssal plain

Back 1

flat seafloor area from 4,000 m to 6,000 m formed by the deposition of sediments.

Front 2

benthos

Back 2

marine plants and animals that liveon or in the ocean floor.

Front 3

chemosynthesis

Back 3

food-making process using sulfur or nitroge compounds, rather than light energy from the Sun, that is used by bacteria living hydrothemal vents.

Front 4

continental shelf

Back 4

gradually sloping end of a continent that extends beneath the ocean.

Front 5

continental slope

Back 5

ocean basin feature that dips steeply down from from the continental shelf.

Front 6

estuary

Back 6

area where a river meets the ocean that contains a mixture of freshwater and ocean water and provides on important habitat to many marine orginism.

Front 7

mid-ocean ridge

Back 7

area where new ocean floor is formed when lava erupts through cracks in Earth's.

Front 8

nekton

Back 8

marine orginism that actifely swem in the ocean.

Front 9

photosynthesis

Back 9

food-making process using light energy from the Sun, carbon dioxade, and water.

Front 10

plankton

Back 10

marine orginism that drift in ocean currents.

Front 11

pollution

Back 11

introduction of wastes to an envirment such as sewage and chemicals that can damage orginism.

Front 12

reef

Back 12

rigid wave- resistant ocean margin habitat built by corals from skeletal materials and calcium.

Front 13

trench

Back 13

long, narrow steep sided depression in the seafloor formed when one crustal plate sinks beneath another.