CSU: ES 1010 Earth Science UNIT IV ASSESSMENT March 2016

| March 14, 2016

· Question 1

2 out of 2 points

__________ develop where oceanic lithosphere bends downward and sinks into the mantle.

· Question 2

2 out of 2 points

__________ are huge circular-moving current systems that dominate the surface of the ocean within an ocean basin.

· Question 3

0 out of 2 points

Examine the graph in Figure 9.2a (p. 297). At what latitude is the ratio of ocean water to land at its maximum? Choose from the following options.

· Question 4

2 out of 2 points

The energy that drives surface ocean currents such as the Gulf Stream comes from __________.

· Question 5

2 out of 2 points

Which element is most common dissolved in seawater?

· Question 6

16 out of 16 points

Match the term with the definition.

o

Question

Oceanography

The multi-disciplinary science that studies the oceans.

Salinity

The measure of the amount of dissolved salts in a given volume of water.

Thermocline

A layer of rapid temperature change.

Pycnocline

A layer of raid density change.

Bathymetry

.

The oceanic equivalent of topography; the three dimensional “shape” of the seafloor.

Terrigenous

Sediment derived from the weathering of rock, mainly on the continents.

Hydrogenous

Sediment derived from dissolved salts in seawater.

Biogenous

Sediment from the shells or skeletal material of living organisms.

· Question 7

4 out of 4 points

Examine the figure. Match each of the lettered locations with the name of the shoreline feature shown there.

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o

Question

Seamount

Volcanic island

Guyot

Oceanic plateau

· Question 8

Needs Grading

The best place to look for crabs is between the high tide and low tide zones (the tidal flat). Knowing this, would you expect to find more crabs during a full moon/new moon or during a quarter moon stage? Explain why.

· Question 9

Needs Grading

Discuss two reasons why summer temperatures in coastal locations in Southern California are cooler than coastal locations at the same latitude in Georgia.

· Question 10

Needs Grading

When you are at the beach, you notice that the waves seem to “break” at the same point as they come towards shore. Explain what is happening beneath the surface to cause the waves to break at this point.

· Question 11

Needs Grading

A variety of techniques and efforts are used to stabilize shorelines throughout the world. Discuss these techniques. Are they temporary or permanent? Also, discuss at least two ways in which the development/urbanization of coastal areas contributes to shoreline erosion? (Hint: think about rivers and what they contribute to our beaches. Also, what increases with the creation of roads and rooftops?)

Your response should be at least 150 words in length.

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