The Marine Environment
Practice Test
1.
Which is NOT a method of building coastal landforms above sea level?
a.
wind-shaping dunes from sediments exposed at low tide
b.
storms moving sediments above the high-tide mark
c.
longshore transportation of sediments at high tide
d.
upwelling of sediments
2.
Why is sea level still rising?
a.
the destruction of ozone in the atmosphere
b.
global warming
c.
global cooling
d.
the size of world glaciers is growing
3.
Straight wave crests bend toward headlands because of a process called __________.
a.
concentration
b.
erosion
c.
wave reflection
d.
wave refraction
4.
How deep is the deepest place in the ocean?
a.
100 km
b.
2 km
c.
20 km
d.
11 km
5.
According to the graph, what is the approximate depth range of ocean basins?
a.
2 km to 4 km
b.
1 km to 4 km
c.
8 km to 10 km
d.
6 km to 8 km
6.
How much lower was sea level 10,000 years ago?
a.
100 m
b.
20 m
c.
500 m
d.
130 m
7.
According to the graph, at what depth does the sea floor start to drop off?
a.
1 km
b.
2 km
c.
4 km
d.
8 km
8.
What breaks mid-ocean ridges into smaller sections?
a.
fracture zones
b.
abyssal plains
c.
shelf breaks
d.
submarine canyons
9.
__________ are submerged basaltic volcanoes more than 1 km high.
a.
Seamounts
b.
Submarine canyons
c.
Fracture zones
d.
Shelf breaks
10.
How much would sea level rise if all the world's polar ice melted?
a.
10 m
b.
2 m
c.
700 m
d.
70 m
