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WorksheetsOceans Chapter 11
Total questions: 30
Worksheet time: 28mins
Name
Class
Date
1.
What is salinity?
a)
the amount of sodium in liquid
b)
the amount of water that has evaporated
c)
the amount of dissolved salts in a liquid
d)
the amount of solids in a liquid
2.
What do scientist use sonar technology for?
a)
to help scuba divers
b)
to talk to whales
c)
to find out the ocean's depth
d)
to predict the weather
3.
The process of removing salt from ocean water is called?
a)
Desalination
b)
Non-Point Source
c)
Point Source
d)
NonRenewable
4.
The major cause of surface waves in the ocean is —
a)
Earthquakes
b)
Rain
c)
Wind
d)
Gravity
5.
Oceanographers of the 21st century use which tool to determine the depth of ocean basins?
a)
Radar
b)
Sonar
c)
Depth gauge
d)
Radiometer
6.
Seawater is typically denser than freshwater due to seawater’s —
a)
Greater depth
b)
Lower freezing point
c)
Smaller mass
d)
Higher salinity
7.
The main cause of ocean salinity is...
a)
Weathering and erosion of rocks on land
b)
Metamorphism
c)
Continental volcanism
d)
CO2 emissions
8.
What causes ocean currents in the Northern Hemisphere to curve to the right?
a)
Earth's orbit around the Sun
b)
Earth's spinning on its axis
c)
Earth's magnetic field
d)
Earth's force of gravity
9.
A[n] ______________ tide occurs when the sun is at right angles to the line between Earth and the moon.
a)
high
b)
neap
c)
low
d)
spring
10.
Differences in the moon's and sun's pull on different sides of the Earth cause _________.
a)
gravity
b)
lunar phases
c)
tides
d)
dabbing
11.
What type of tides would this arrangement of earth-moon-sun create?
a)
neap tide
b)
spring tide
c)
new moon tide
d)
full moon tide
12.
Why does the moon's gravitational pull have more of effect on tides than the sun's gravitational pull?
a)
they are the same
b)
the moon is larger than the sun
c)
tides are not caused by the moon
d)
the moon is closer to the Earth than the sun
13.
What causes tides?
a)
gravity
b)
wind
c)
spring
d)
neap
14.
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
15.
The Coriolis Effect is caused by...
a)
Earth rotating around the sun
b)
Earth rotating on its axis
c)
The tides
d)
Gravity
16.
What process brings the deep cold ocean currents up to the surface?
a)
Conduction
b)
Global Wind Patterns
c)
Upwelling
d)
Temperature and salinity
17.
The apparent curving of moving objects from a straight path due to Earth's rotation is called the _____________ effect.
a)
Coriolis
b)
Jupiter
c)
sun
d)
continental
18.
A dangerous current that results from a break in a sandbar is known as a...
a)
longshore current
b)
global current
c)
tidal current
d)
rip current
19.
How do water particles move within a wave?
a)
Towards the top of the wave
b)
In a circular path
c)
They do not move at all
d)
Ocean organisms move the water particles
20.
To reduce erosion along a strip of beach, you might build a short wall called a...
a)
Dune
b)
Barrier beach
c)
Sandbar
d)
Groin
21.
In a body of water, a large ripple set in motion by steady winds.
a)
crest
b)
breaker
c)
wave
d)
trough
22.
In temperate zones, winds blowing from the west that drive ocean currents eastward.
a)
westerly winds
b)
trade winds
23.
The low part of a wave, between crests.
a)
crest
b)
breaker
c)
wavelength
d)
trough
24.
A type of vertical current flowing upward from the ocean floor to the surface.
a)
upstream
b)
upwelling
c)
current
25.
Near the equator, winds that blow from the east to drive ocean currents westward.
a)
trade winds
b)
westerly winds
26.
In the ocean, a long, smooth wave near the shore; caused by winds and storms far out at sea.
a)
trough
b)
wave
c)
swell
d)
trenches
27.
200 - 1000 m below the ocean surface, a region in which temperatures decrease rapidly with increasing water depth.
a)
thermocline
b)
upwelling
c)
wavelength
28.
Near the surface of the ocean, a layer of water in which winds and waves evenly mix heat from the Sun and other sources.
a)
thermocline
b)
mixed layer
c)
abyssal plain
29.
A mass of cold water flowing beneath the ocean surface; the water is often more saline than surrounding areas and often contains a significant amount of sediment.
a)
current
b)
density current
c)
saline current
d)
surface current
30.
Ocean currents that flow in the top 100 - 200 m of water are affected by the uneven heating of the atmosphere known as __________ currents.
a)
density
b)
surface
c)
cold
d)
hot
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