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Pearson Ch. 7 Sec. 6 Ocean Currents!

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

The _______________ is/are the shifting of winds and surface currents from their expected paths that is caused by Earth's rotation.

a)

surface currents

b)

Coriolis effect

c)

polar wind

d)

none of these

2.

Changes in temperature and salinity work together to create __________.

a)

density currents

b)

upwelling

c)

gravity

d)

the gulf stream

3.

A vertical circulation in the ocean that brings deep, cold water to the ocean surface.

a)

wave length

b)

surface currents

c)

density

d)

upwelling

4.

Surface currents move __________.

a)

vertical

b)

horizontal

c)

diagonal

d)

90 degree angle

5.

In the Northern Hemisphere, surface currents tend to move _____________.

a)

counter clockwise

b)

clockwise

c)

straight

d)

at a 90 degree angle

6.

Density currents slowly circulate deep ocean water.

a)

True

b)

False

7.

Surface currents _________ affect density currents.

a)

do

b)

do not

c)

sometimes

d)

always

8.
Salt can be removed from ocean water by a process called ____________.
a)
removification
b)
salinity
c)
desalination
d)
steady state
9.
Ocean water contains many dissolved salts.  These salts arrive due to rocks that are dissolved slowly by _______________.
a)
carbon dioxide
b)
chemicals
c)
rivers and ground water
d)
water vapor
10.
Today around 81 percent of the Earth is covered by ocean water.
a)
True
b)
False
11.
Some animals, such as oysters, use dissolved calcium in the ocean water to form shells
a)
True
b)
False
12.
Scientists hypothesize that water vapor from ______________ created clouds that eventually lead to the creation of the Earth's oceans.
a)
cumulonimbus clouds
b)
valleys
c)
gases
d)
volcanoes
13.
Salinity is a measure of the _______________ dissolved in seawater.
a)
amount of oxygen
b)
amount of chlorine
c)
amount of salt
14.

Which of the following powers & causes surface currents to form?

a)

Moon

b)

Differences in density

c)

Wind

d)

Amount of Salinity

15.

Surface currents affect _____________.

a)

low tides

b)

the climate on continents

c)

the ocean bottom

d)

high tides