Features of the Ocean Floor + Coral Reefs

Label the features of the ocean floor.

a

b

c

d

e

f

i

j

continental slope

trench

shore

seamount

volcanic island

continental shelf

abyssal plain

mid-ocean ridge

continental rise

atoll

Tags

NGSS.MS-ESS2-4

Arrange the terms below in order from land (1) toward the middle of an ocean (5).

• continental rise

• abyssal plain

• beach

• continental slope

• continental shelf

At which type of tectonic plate boundary do mid-ocean ridges form?

• convergent

• divergent

• transform

• slate

The top of a seamount is called a (a)   .

The deepest place in the ocean is located in which ocean floor feature?

(a)  

What percentage of seawater is composed of salt?

• 35%

• 3.5%

• 50%

• 5.0%

What is the primary source of dissolved gases in the ocean?

• chemical reactions in the water

• underwater plants

• diffusion from the atmosphere

• outer space

(a)   : photosynthetic algae that live in mutual symbiosis with coral tissue.

Explain how coral and zooxanthellae live in mutual symbiosis. How does this relationship benefit both organisms?

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

(a)   : the chemical compound that is created by coral organisms to build their skeleton.