1) what is the number one factor that determines the types of organisms that can live in a body of water?

a) temperature
b) salt content
c) density
d) pressure

2) which of the following contributes to ocean currents?

a) differences in ocean water temperatures
b) differences in ocean water density
c) all of the above

3) what is the intertidal zone ?

a) deepest part of the ocean
b) part of the ocean close to land that has cycles of high and low water
c) part of ocean where sunlight is very limited
d) part of ocean where pressure is highest

4) what processes dominate shaping of the shore lines?

a) gravity and sedimentation
b) erosion and deposition
c) respiration and photosynthesis
d) rotation and revolution

5) what is a barrier island ?

a) small indentation in the shore line
b) piece of land that connects two bodies of water
c) land that runs parallel to the coast and caused by the build up of sediments
d) place where 2 sea caves have eroded side by side

6) salt water has higher density than fresh water ?
a) true
b) false

7) extreme pressure at the ocean floor keeps any living thing from surviving there
a) true
b) false

8) the ocean floor is not flat, but is instead marked by high mountains and deep trenches
a) true
b) false

9) a sand pit is a small hollow chamber formed by the erosion of a rocky coast .
a) true
b) false