Quiz 1 Questions

Question 1

Which of the following statements is true when there’s a new moon?
a) The Earth is perpendicular with the Sun and Moon; and the tidal range is the greatest
b) The Earth is perpendicular with the Sun and Moon; and the tidal range is the lowest.
c) The Sun, Moon and Earth are in line, and the tidal range is highest
d)
The Sun, Moon and Earth are in line, the Earth is between the Sun and the Moon and the tidal range is highest
e) The Sun, Moon and Earth are in line, the Earth is on one side of the Sun and the Moon and the tidal range is highest

Answer 1

e) The Sun, Moon and Earth are in line, the Earth is on one side of the Sun and the Moon and the tidal range is highest

Question 2

Early navigators used the stars to find their:

a) latitude
b) longitude
c) distance they had travelled each day
d) speed they were travelling
e) all of the above

Answer 2

a) latitude

Question 3

t/f
The Equatorial Current is a Boundary Current

Answer 3

false

it doesn’t run along a continent

Question 4

Marginal seas tend to have properties that differ from the adjacent open ocean because
a) Local evaporation may be high relative to precipitation

b) Marginal seas usually have restricted circulation with the adjacent open ocean

c) Local river input might reduce the salinity of the marginal sea

d) all of the above

Answer 4

d) all of the above

Question 5

When a phytoplankter remains just below its compensation depth, it:
a) can no longer photosynthesize
b) will eventually die
c) experiences an increased rate of respiration
d) all of the above
e) a) and b) but not c)

Answer 5

e)
a and b but not c

Question 6

A sharp change in seawater density at any depth is called ___

pycnocline

thermocline

halocline

none of the above

Answer 6

pycnocline

Question 7

A submersible moving from just above a mid-ocean ridge to 1 km away would find:
a) the earth’s crust gets younger
b) the earth’s crust gets older
c) one plate subducting under another
d) all of the above

Answer 7

b) the earth’s crust gets older

Question 8

Seawater is denser than freshwater due to:
a) sodium
b) chlorine
c) bromine
d) metals
e) salts

Answer 8

e) salts

Question 9

If you sampled one liter of seawater for its different elements in Norway and in Hawaii you would find:
a)
The same ratio of elements in Hawaii as in Norway but different salinities because of evaporation in Hawaii
b) The same ratios of elements in Hawaii and in Norway due to mixing by thermohaline circulation
c) The ratios of elements would be the same except for silica because there are no large rivers in Hawaii
d) (a) and (b) but not (c)

Answer 9

(a) and (b) but not (c)

Question 10

Western ocean boundary currents in the northern hemisphere such as the Gulf Stream:
a) always bends to the left
b) move cold water from south to north
c) Are driven by the Coriolis effect and the rotation of the Earth
d) all of the above

Answer 10

c) Are driven by the Coriolis effect and the rotation of the Earth