Oceanography 1

Question 1

oceanography

Answer 1

the study of the physical and biological properties of the seas/oceans

Question 2

deep ocean basin

Answer 2

region of the ocean floor made of oceanic crust (deep)

Question 3

continental margin

Answer 3

region of the ocean floor made out of continental crust (shallow)

Question 4

ocean trench

Answer 4

a steep, long depression in the deep-sea floor that runs parallel to a chain of volcanic islands or a continental margin

Question 5

midocean ridge

Answer 5

a long, undersea mountain chain that forms along the floor of the major oceans

Question 6

rift valley

Answer 6

a long, narrow valley that forms as tectonic plates separate

Question 7

seamount

Answer 7

a submerged mountain on the ocean floor that is at least 1000 m high and that has a volcanic origin

Question 8

continental shelf

Answer 8

the gently sloping section of the continental margin located between the shoreline and the continental slope

Question 9

continental slope

Answer 9

the steeply inclined section of the continental margin located between the continental rise and the continental shelf

Question 10

continental rise

Answer 10

the gently sloping section of the continental margin located between the continental slope and the abyssal plain

Question 11

abyssal plain

Answer 11

a large, flat, almost level area of the deep-ocean basin

Question 12

echo-ranging

Answer 12

determination of the distance and direction of an object (as under water) by means of an echo (as of sound) returned by the object