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WorksheetsOceans Review
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
A technique that uses sound waves to measure the depth of the ocean floor is
a)
dredging
b)
sonar
c)
scuba
d)
weighted lines
2.
Which of the following does NOT make studying the ocean floor difficult?
a)
The ocean consists of salt water rather than fresh.
b)
The deep ocean is in total darkness.
c)
The water in the deep ocean is extremely cold.
d)
There is tremendous pressure in the deep ocean.
3.
Which of the following features is made up of a range of mountains that wind through the ocean?
a)
seamount
b)
trench
c)
abyssal plain
d)
mid-ocean ridge
4.
The nearly flat region of the ocean floor, covered with thick layers of sediment, is called a(n)
a)
seamount
b)
abyssal plain
c)
continental slope
d)
mid-ocean ridge
5.
The part of the ocean that extends from the low-tide line to the edge of the continental shelf is the
a)
neritic zone
b)
open-ocean zone
c)
intertidal zone
d)
deep zone
6.
The area that stretches from the highest high-tide line on land out to the point on the continental shelf exposed by the lowest low tide is called the
a)
intertidal zone
b)
neritic zone
c)
estuary zone
d)
deep zone
7.
As a wave nears shore, the wave height increases and wavelength
a)
decreases
b)
increases
c)
stays the same
d)
doubles
8.
Salinity is a measure of which of the following in water?
a)
carbon dioxide
b)
oxygen
c)
dissolved salts
d)
sand
9.
Tides are caused by
a)
strong winds that blow over ocean waters
b)
the interaction of Earth, the moon, and the sun
c)
the shifting of the plates on the ocean floor
d)
variations in the salinity of ocean water
10.
A tidal power plant produces energy using the movement of water
a)
in surface waves
b)
between high tide and low tide
c)
due to earthquakes
d)
between neap tide and spring tide
11.
In the Northern Hemisphere, currents curve to the right because of the
a)
longshore drift
b)
density
c)
Coriolis effect
d)
moon's gravity
12.
The movement of cold, deep ocean water to replace warm water at the surface is called
a)
upwelling
b)
a surface current
c)
the Coriolis effect
d)
El Nino
13.
The horizontal distance between wave crests is the
a)
frequency
b)
wavelength
c)
trough
d)
wave height
14.
When a tsunami hits the shore, it can be very destructive because of its large
a)
sandbar
b)
trough
c)
wave height
d)
frequency
15.
Which of the following areas in the ocean is likely to have the lowest salinity?
a)
a warm, tropical sea
b)
the cold Arctic ocean
c)
a bay at the mouth of a big river
d)
deep parts of the Pacific ocean
16.
A tide with the LEAST difference between low and high tide is called a
a)
spring tide
b)
neap tide
c)
rip tide
d)
monthly tide
17.
A large current of moving water that flows through the oceans is called a(n)
a)
current
b)
tsunami
c)
tide
d)
undertow
18.
Which of the following types of current typically carries cold, dense water from the poles toward the equator?
a)
surface currents
b)
longshore currents
c)
deep currents
d)
rip currents
19.
What is the most abundant salt in sea water?
a)
sodium chloride
b)
magnesium chloride
c)
calcium chloride
d)
potassium chloride
20.
As you descend through the water column,
a)
temperature decreases
b)
pressure decreases
c)
light increases
d)
density decreases
21.
Which of the following is true of El Nino?
a)
Scientists fully understand the conditions that create El Nino
b)
El Nino affects only the ocean, not the land.
c)
El Nino can cause severe storms and can prevent upwelling in certain areas.
d)
El Nino usually occurs twice a year.
22.
What causes cold, deep currents to form in the oceans near the poles?
a)
sinking of dense, cold water with high salinity
b)
the Coriolis force
c)
movement of a large mass of water across the Pacific
d)
sinking of cold, freshwater from melting icebergs
23.
True or False?
As the salinity of water increases, the density decreases.
As the salinity of water increases, the density decreases.
a)
True
b)
False
24.
True or False?
Near the shore, friction between the ocean floor and the water causes waves to speed up.
Near the shore, friction between the ocean floor and the water causes waves to speed up.
a)
True
b)
False
25.
True or False?
The pressure of ocean water increases as depth increases.
The pressure of ocean water increases as depth increases.
a)
True
b)
False
26.
True or False?
Winds are the main cause of deep currents in the ocean.
Winds are the main cause of deep currents in the ocean.
a)
True
b)
False
27.
True or False?
A low tide occurs as places on Earth's surface pass through the areas of the tidal bulges.
A low tide occurs as places on Earth's surface pass through the areas of the tidal bulges.
a)
True
b)
False
28.
Which letter identifies the continental shelf?
a)
A
b)
B
c)
C
d)
D
29.
Which letter identifies a trench?
a)
A
b)
B
c)
C
d)
D
30.
Which letter identifies a mid-ocean ridge?
a)
A
b)
B
c)
C
d)
D
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