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Name ___________________________
Chapter 16
Class ___________________
Date _____________
The Dynamic Ocean
Section 16.1 Ocean Circulation
This section discusses how movements of surface and deep-ocean waters
occur.
Reading Strategy
© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.
Identifying Main Ideas As you read, write the main idea of each
topic in the table. For more information on this Reading Strategy, see
the Reading and Study Skills in the Skills and Reference Handbook
at the end of your textbook.
Topic
Main Idea
Surface currents
a.
Gyres
b.
Ocean currents and climate
c.
Upwelling
d.
.
Surface Circulation
1.
Is the following sentence true or false? Friction between the
ocean and the wind blowing across its surface cause ocean surface
currents.
Match each definition with its term.
Definition
2. large whirl of water within an
ocean basin
3. mass of ocean water that flows
from place to place
4. rising of cold, deep ocean water
to replace warmer surface water
5. horizontal water movement in
the upper part of the ocean’s surface
Term
a. gyre
b. upwelling
c. surface current
d. ocean current
Earth Science Guided Reading and Study Workbook
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119
Name ___________________________
Chapter 16
Class ___________________
Date _____________
The Dynamic Ocean
6. Select the appropriate letter on the map that identifies each of the
following ocean currents.
North Atlantic Gyre
North Pacific Gyre
South Atlantic Gyre
South Pacific Gyre
Indian Ocean Gyre
30˚
60°
C
i
io
sh
ya
O
S
N. Equatorial C.
sC
S. Equatorial C.
lh a
E
gu
D
C.
A
West Wind
West Wind Drift
20˚
0˚
C.
20˚
40˚
East Wind Drift
60˚
60˚
40˚
C.
hio
ros
u
K
us
40˚
la
ngue C.
Be
B
.
S. Equatorial C.
C.
Peru
20˚
S. Equatorial C.
Bra
zil
C.
0˚
C.
nC
.
N.
eg
Australia
Gu
lf
m
rea
C.
ntic
Atla
N or w
N. Equa rial C.
to
N. Equatorial C.
150°
Warm
Cold
om
ali
Ala
.
C
20˚
rn
ia
St
C.
land
en
re
ary
Can C.
Ca
lifo
120°
90°
E.
C.
40˚
A
E. G
n
N. Pacific C.
.
ska
60°
30˚
tralian C.
Leeuwin
or C
ad
60˚
0°
80˚
Lab
r
W
.A
90°
C.
120°
an
150°
80˚
60˚
East Wind Drift
80˚
80˚
150°
90°
60°
30˚
0°
30˚
60°
90°
120°
150°
How does the Coriolis effect impact ocean currents in the
Northern and Southern Hemispheres?
Ocean currents moving from low-latitude to higher latitude
regions transfer
from warmer to cooler areas.
9.
Is the following sentence true or false? Winds cause upwelling,
which in turn causes an increase in dissolved nutrients at the
ocean surface.
8.
Deep-Ocean Circulation
10. What are density currents?
Ocean water can increase in density as a result of a decrease in
temperature or a(n)
in salinity.
12. Circle the letter of the area where the ocean water with the highest density occurs.
a. at the equator
b. near Antarctica
c. in the Mediterranean Sea d. near Australia
11.
Earth Science Guided Reading and Study Workbook
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120
© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.
7.
120°