Physical Oceanography
Practice Test
1.
During relatively warm times of Earth's geologic history, the volume of glacial ice was __________ and sea level was __________.
SC.D.1.4.3
a.
low, high
b.
high, low
c.
low, low
d.
high, high
2.
Which element is not an ion found in ocean water?
a.
Ni
b.
Cl
c.
Na
d.
K
3.
What is the cause of ocean layering?
a.
polar ice caps
b.
density differences
c.
evaporation
d.
currents
4.
What type of technology is used to map the ocean floor?
a.
UV radiation
b.
GPS
c.
submarines
d.
sonar
5.
Why are salinities lower than average in some areas close to the equator?
a.
rapid evaporation
b.
larger clouds
c.
abundant precipitation
d.
stronger winds
6.
What are wind-driven currents called?
a.
density currents
b.
spring tides
c.
surface currents
d.
ocean currents
7.
Which current shown in the map brings warm water to the east coast of the U.S.?
a.
Equatorial Countercurrent
b.
Canary Current
c.
Gulf Stream
d.
North Atlantic Current
8.
When did the first modern oceanographic expedition occur?
a.
early 1950s
b.
1500s
c.
early 1800s
d.
late 1800s
9.
What is the difference between low and high tide called?
SC.E.1.4.1
a.
tidal range
b.
riptide
c.
neap tide
d.
full moon
10.
What is the densest and coldest water mass of all Earth's oceans?
a.
North Atlantic deep water
b.
Gulf Stream
c.
Antarctic intermediate water
d.
Antarctic bottom water
11.
What determines the speed of waves in deep water?
a.
wave height
b.
surface currents
c.
wavelength
d.
direction of waves
12.
What is one source of sodium ions found in the ocean?
a.
volcanic gases
b.
the shells of marine organisms
c.
evaporation
d.
ultraviolet radiation
