Oceans

Question 1

The Pacific Ocean is the largest and deepest of Earth’s oceanic divisions

Answer 1

Pacific Ocean

Question 2

The Atlantic Ocean is the second largest of the world’s oceans with a total area of about 106,460,000 square kilometers

Answer 2

Atlantic Ocean

Question 3

The Indian Ocean is the third largest of the world’s oceanic divisions, covering 70,560,000 km²

Answer 3

Indian Ocean

Question 4

The Arctic Ocean is the smallest and shallowest of the world’s five major oceans

Answer 4

Arctic Ocean

Question 5

The Southern Ocean, also known as the Antarctic Ocean or the Austral Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica

Answer 5

Southern Ocean

Question 6

Salinity is the saltiness or amount of salt dissolved in a body of water.

Answer 6

salinity

Question 7

The surface layer of the ocean is known as the epipelagic zone and extends from the surface to 200 meters

Answer 7

surface zone

Question 8

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

Answer 8

thermocline

Question 9

The deep zone ocean is a zone of the world’s oceans occupying intermediate position between the abyssalpolegic region and the sea bed

Answer 9

deep zone

Question 10

The water cycle, also known as the hydrological cycle or the hydrologic cycle, describes the continuous movement of water on, above and below the surface of the Earth

Answer 10

water cycle

Question 11

Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance

Answer 11

evaporation

Question 12

Condensation is the change of the physical state of matter from gas phase into liquid phase, and is the reverse of vapourisation

Answer 12

condensation

Question 13

n meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity

Answer 13

precipitation

Question 14

The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea

Answer 14

continental shelf

Question 15

The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea

Answer 15

continental slope

Question 16

An imaginary geographic line defined by the fact that water poured on one side of it would ultimately flow into the ocean on one side of a continent

Answer 16

continental divide

Question 17

An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3,000 metres and 6,000 metres

Answer 17

abyssal plain

Question 18

A mid-ocean ridge is an underwater mountain system formed by plate tectonics

Answer 18

mid-ocean ridge

Question 19

a large elongated depression with steep walls formed by the downward displacement of a block of the earth’s surface between nearly parallel faults or fault systems

Answer 19

rift valley

Question 20

A seamount is a mountain rising from the ocean seafloor that does not reach to the water’s surface, and thus is not an island, islet or cliff-rock

Answer 20

seamount

Question 21

Oceanic trenches are topographic depressions of the sea floor, relatively narrow in width, but very long

Answer 21

ocean trench

Question 22

Plankton are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current

Answer 22

plankton

Question 23

aquatic animals that are able to swim and move independently of water currents

Answer 23

nekton

Question 24

Benthos is the community of organisms that live on, in, or near the seabed, also known as the benthic zone

Answer 24

benthos

Question 25

Desalination is a process that extracts mineral components from saline water. More generally, desalination refers to the removal of salts and minerals from a target substance, as in soil desalination, which is an issue for agriculture

Answer 25

desalination