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WorksheetsOcean Motions
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
Horizontal distance between two wave crests is the
a)
frequency
b)
wavelength
c)
trough
d)
wave height
2.
The size of a wave is NOT affected by the
a)
length of time the wind blows across the water
b)
salinity of the water
c)
strength of the wind
d)
distance the wind blows across the water.
3.
The lowest point on a wave is the
a)
crest
b)
trough
c)
line of origin
d)
wavelength
4.
Distance from the crest to trough of a wave is called
a)
wavelength
b)
line of origin
c)
wave height
d)
wave period
5.
A wave will increase in height when the distance over which the winds blow over the ocean
a)
increases
b)
stays the same
c)
decreases
d)
is 0 km
6.
The highest point on a wave is the
a)
crest
b)
trough
c)
line of origin
d)
wavelength
7.
When a tsunami hits the shore, it can be very destructive because of its large
a)
sandbar
b)
trough
c)
wave height
d)
frequency
8.
In the Northern Hemisphere, currents curve to the right because of the
a)
longshore drift
b)
density
c)
Coriolis Effect
d)
Moon's gravity.
9.
What is the main cause of Gulf Stream movement?
a)
Storms
b)
winds that blow now and then
c)
winds that blow in the same direction regularly
d)
the moon's gravity
10.
A major warm ocean current flows along a coastal area. What type of climate would you most likely find in the area influenced by the current?
a)
cool and dry
b)
mild and wet
c)
extremely hot and dry
d)
extremely cool and wet
11.
Most currents that flow on the western side of a continent are usually
a)
warm
b)
irregular in motion
c)
cold
d)
moving toward the poles
12.
Currents that flow FROM the poles towards the equator are usually
a)
warm
b)
cold
c)
irregular in motion
d)
no specific temperature
13.
Currents that flow from the equator toward the poles are usually
a)
warm
b)
cold
c)
irregular in motion
d)
no specific temperature
14.
Surface currents and waves are caused mainly by
a)
density differences
b)
winds
c)
the Coriolis effect.
d)
the moon's gravity
15.
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
16.
High tide occurs two times a(n)
a)
hour
b)
month
c)
day
d)
year
17.
If tides alternate from high to low and there are two of each type of tide a day, about how many hours will generally be between each different tide?
a)
2 hours
b)
6 hours
c)
12 hours
d)
24 hours
18.
If the first HIGH tide of the day occurs at 1:00 A.M., the next high tide will come closest to
a)
7:00 AM
b)
7:00 PM
c)
1:00 PM
d)
1:00 AM
19.
The name given to tides that occur during a new and full moon are called?
a)
low tides
b)
high tides
c)
neap tides
d)
spring tides
20.
Which of the following is true of El Niño?
a)
Scientists fully understand the conditions that create El Niño
b)
El Niño affects only the ocean, not the land
c)
El Niño can cause severe storms and can prevent upwelling in certain areas.
d)
El Niño usually occurs twice a year.
21.
A technique that uses sound waves to measure the depth of the ocean floor is
a)
dredging
b)
sonar
c)
SCUBA
d)
weighted lines
22.
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
23.
A 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
24.
Which letter identifies the continental shelf?
a)
A
b)
B
c)
G
d)
F
25.
Identify the ocean feature labeled G.
a)
seamount
b)
abyssal plain
c)
trench
d)
mid-ocean ridge
26.
What is the feature labeled B?
a)
continental slope
b)
mid-ocean trench
c)
seamount
d)
trench
27.
What is the feature labeled at D?
a)
continental shelf
b)
continental slope
c)
mid ocean ridge
d)
trench
28.
Identify the feature at E.
a)
abyssal plain
b)
volcanic island
c)
trench
d)
continental shelf
29.
Which feature is part of the underwater mountain range that winds through Earth's oceans?
a)
continental shelf
b)
continental slope
c)
abyssal plain
d)
mid-ocean ridge
30.
What is the feature labeled at A?
a)
continental shelf
b)
continental slope
c)
abyssal plain
d)
mid-ocean ridge
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