Ocean

Question 1

Pacific Ocean

Answer 1

the largest and deepest ocean on Earth

Question 2

Atlantic Ocean

Answer 2

the youngest of the five oceans

Question 3

Indian Ocean

Answer 3

third-largest Ocean in the world

Question 4

Arctic Ocean

Answer 4

5.4 million square miles

Question 5

Southern Ocean

Answer 5

the most southerly of the planet’s five oceans

Question 6

salinity

Answer 6

the quality or degree of being saline

Question 7

thermociline

Answer 7

a steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures

Question 8

deep zone

Answer 8

extending or situated relatively far down from a surface

Question 9

water cycle

Answer 9

the cycle of processes by which water circulates between the earth’s oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.

Question 10

evaporation

Answer 10

the process of turning liquid into vapor

Question 11

condensation

Answer 11

water which collects as droplets on a cold surface when humid air is in contact with it.

Question 12

precipitation

Answer 12

water falling from the sky

Question 13

continental shelf

Answer 13

the area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean. The continental shelf is geologically part of the continental crust.
“extensive areas of continental shelf”

Question 14

continental slope

Answer 14

the slope between the outer edge of the continental shelf and the deep ocean floor.

Question 15

continental rise

Answer 15

a wide, gentle incline from a deep ocean plain (abyssal plain) to a continental slope.

Question 16

abyssal plain

Answer 16

the largest habitat on earth.

Question 17

mid-ocean ridge

Answer 17

continuous range of underwater volcanoes that wraps around the globe like seams on a baseball

Question 18

rift valley

Answer 18

a lowland region that forms where Earth’s tectonic plates move apart, or rift.

Question 19

seamount

Answer 19

a submarine mountain.

Question 20

ocean trench

Answer 20

a long, narrow, deep depression in the ocean floor, typically one running parallel to a plate boundary and marking a subduction zone.

Question 21

plankton

Answer 21

the small and microscopic organisms drifting or floating in the sea or fresh water, consisting chiefly of diatoms, protozoans, small crustaceans, and the eggs and larval stages of larger animals. Many animals are adapted to feed on plankton, especially by filtering the water.

Question 22

Nekton

Answer 22

mobile organisms which are able to swim or otherwise move independently of all but the strongest water currents

Question 23

benthos

Answer 23

depths of the sea

Question 24

desalinantion

Answer 24

the process of removing salt from seawater.