Oceans

Question 1

Is the largest and deepest of Earth’s oceanic divisions

Answer 1

Pacific ocean

Question 2

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

Is the third largest of the world’s oceanic divisions, covering 70,560,000 km²

Answer 3

Indian ocean

Question 4

Is the smallest and shallowest of the world’s five major oceans

Answer 4

Arctic ocean

Question 5

Also known as the Antarctic Ocean or the Austral Ocean, comprises the southernmost waters of the World Ocean

Answer 5

Southern ocean

Question 6

The concentration of dissolved salts in water

Answer 6

salinity

Question 7

Bounded by lines parallel to the equator and named according to the prevailing temperature

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

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 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

Answer 10

water cycle

Question 11

Is a type of vaporization, that occurs on the surface of a liquid as it changes into the gaseous phase

Answer 11

evaporation

Question 12

Water that collects as droplets on a cold surface when humid air is in contact with it

Answer 12

condensation

Question 13

The action or process of precipitating a substance from a solution

Answer 13

precipitation

Question 14

The area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean

Answer 14

continental shelf

Question 15

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

Answer 15

continental slope

Question 16

Is a drainage divide on a continent such that the drainage basin on one side of the divide feeds into one ocean or sea, and the basin on the other side either feeds into a different ocean or sea, or else is endorheic, not connected to the open sea

Answer 16

continental divide

Question 17

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

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 submarine mountain

Answer 20

seamount

Question 21

Are topographic depressions of the sea floor, relatively narrow in width, but very long

Answer 21

ocean trench

Question 22

The small and microscopic organisms drifting or floating in the sea or fresh water

Answer 22

plankton

Question 23

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

Answer 23

nekton

Question 24

The flora and fauna found on the bottom, or in the bottom sediments, of a sea, lake, or other body of water

Answer 24

benthos

Question 25

The process of removing salt from seawater

Answer 25

desalination