Chapter 13 - Oceans and Seas

Question 1

What ocean basin region is the Challenger Deep associated with?

Answer 1

Trench

Question 2

What underwater feature forms at the margins of divergent tectonic plates?

Answer 2

Mid-ocean ridge

Question 3

What can reach up to 1100 atm in the Challenger Deep

Answer 3

Pressure

Question 4

What is lowered by increasing water’s saltiness?

Answer 4

Melting/freezing point

Question 5

What is 1.028 g/cm cubed at normal conditions?

Answer 5

Density

Question 6

What is essential for using echolocation?

Answer 6

Speed of sound

Question 7

True or False? The only substance dissolved in seawater is salt.

Answer 7

False

Question 8

True or False? Sea level is the same elevation everywhere on Earth.

Answer 8

False

Question 9

What area of the open ocean has relatively constant salinity and good water clarity?

Answer 9

Photic zone

Question 10

What area of the ocean between the low tide mark and the edge of the continental shelf is home to benthic and pelagic organisms?

Answer 10

Littoral zone

Question 11

Where do marine organisms must be very mobile or have a sturdy design and good grip on surfaces?

Answer 11

Intertidal zone

Question 12

Which area contains only pelagic organisms?

Answer 12

Photic zone

Question 13

Which two zones can light from the surface not reach?

Answer 13

Aphotic and abyssal zones

Question 14

What are sometimes called the “rainforests of the sea”

Answer 14

Coral reefs

Question 15

What forms when large waves first break and drop sand?

Answer 15

Longshore sandbar

Question 16

What is a submerged mountain or hill rising from the sea floor?

Answer 16

Seamount

Question 17

What is the height of the water at any particular time in a given location?

Answer 17

Local sea level

Question 18

What is water that is safe to drink?

Answer 18

Potable

Question 19

What is the shallow, submerged edges of a continent?

Answer 19

Continental shelf

Question 20

What is the method of desalinating seawater to provide fresh water?

Answer 20

Distillation

Question 21

What is the broad field that includes specialties such as marine biologists, marine engineers, marine chemists, and more?

Answer 21

Oceanography

Question 22

What is an ability found in some sea creatures which man has used as a model in developing sonar?

Answer 22

Echolocation

Question 23

What is a coral reef separated from the mainland by a lagoon?

Answer 23

Barrier reef

Question 24

What is a computed average of all the high and low tide levels at a location?

Answer 24

Mean sea level

Question 25

Which ocean covers the largest percentage of the earth’s surface?

Answer 25

Pacific Ocean

Question 26

Which of these do young-earth creationists believe were most likely created by runoff from the continents late in the Flood?

Answer 26

Submarine canyons

Question 27

How much mineral salt does 1000 g of seawater contain?

Answer 27

35 g

Question 28

The deepest measured depth of the ocean is about ______________.

Answer 28

11,000 m (36,000 ft)

Question 29

What is a reason that our lives do not depend on the existence of oceans?

Answer 29

The oceans produce nitrogen needed by humans

Question 30

True or False? Minerals lower the salinity of seawater when they leave it by being obsorbed by organisms, clumping and falling to the bottom with sediment, or by precipitating when they become to concentrated to remain dissolved.

Answer 30

True

Question 31

True or False? Through a process called nitrogen fixing, the nitrogen is converted to various organic forms of nitrogen that are useful to organisms.

Answer 31

True

Question 32

True or False? Lakes are sections of the oceans that are more or less surrounded by land.

Answer 32

False

Question 33

True or False? Because clams, corals, and anemones are attached to or live on the bottom, we call them abyssal organisms.

Answer 33

False