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Worksheetscreate a review like this !
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Which temperaturenis inferred to exist in Earths plastic mantle?
a)
5,000
b)
2,000
c)
3,000
d)
6,000
2.
In which earth layer are most convection currents that cause seafloor spreading thought to be located?
a)
outer core
b)
inner core
c)
asthenosphere
d)
crust
3.
a)
1
b)
2
c)
3
d)
4
4.
The daily tidal range is greatest during ____________tide:
a)
ebb
b)
spring
c)
neap
d)
all of the above
5.
Which number is closest to the number of earthquakes with a magnituted greater than or equal to 6, that occurred in 2011
a)
450
b)
9000
c)
200
d)
9380
6.
Where would you most likely find a boundary between a continental and an oceanic plate
a)
In the center of the pacific
b)
In the center of North America
c)
off the west coast of North America
d)
At the boundary between Canada and the United States
7.
The coriolis effect:
a)
applies only to tides
b)
is caused by earth's rotation
c)
is greatest nea the equator
8.
which of the following water masses would be the most dense?
a)
warm water with high salinity
b)
cold water with with low salinity
c)
cold water with high salinity
d)
all of these would be equally dense
9.
coriolis effect, surface ocean currents are deflected to the ________of their path of motion in the northern hemisphere
a)
right
b)
left
c)
middle
d)
not at all
10.
Concerning the distribution of land and water, which of the following statements is true?
a)
The percentage ofland and water is about the same in both Northern and Southern Hemispheres
b)
The southern hemishpere has much more water surface than the Northern hemisphere
c)
the northern hemisphere has much more water surface than the soutern hemispheres
d)
none of these
11.
Which salt is most abundant in seawater?
a)
sodium chloride
b)
sodium bicarbonate
c)
potassium bicarbonate
d)
magnesium chloride
12.
when there are two high tides and two low tides each tidal day, the pattern is described as
a)
mixed
b)
semidiurnal
c)
diiurnal
d)
none of these
13.
The _______marks the transition between the warm surface layer and the deep zone of cold water in the oceans
a)
pycnocline
b)
halocline
c)
salinoclinehalocline
d)
thermocline
14.
echosounder operates by measuring the time required for a
a)
sound pulse travels from a ship to the seafloor and back
b)
radar beam to travel from the harbor patrol boat toa fuzz-buster on a speeding yacht
c)
light beam to travel from a sattellite at a known altitude to the sea bottom and back
d)
radar beam to travel from a ship to the seafloor and back
15.
The earth surface waters probably originated through the process of
a)
outgasing
b)
crustal fracturing
c)
subduction
d)
erosion
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