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WorksheetsSalt Water
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
What causes surface currents?
a)
wind
b)
salinity
c)
temperature
d)
density
2.
What causes deep currents?
a)
differences in density
b)
wind
c)
weather
d)
Coriolis effect
3.
Why do currents curve to the right in the Northern Hemisphere?
a)
riptides
b)
density
c)
salinity
d)
Coriolis effect
4.
Which process will increase the salinity of ocean water?
a)
evaporation
b)
currents
c)
Coriolis effect
d)
density
5.
How will the melting of icecaps change the salinity of ocean water?
a)
raise the salinity
b)
lower the salinity
c)
no change to the salinity
d)
I have no idea
6.
How are salts added to the ocean?
a)
precipitation
b)
evaporation
c)
erosion from land
d)
density
7.
As the ocean depth increases, how to temperature and density change?
a)
it gets colder and more dense
b)
it gets colder and less dense
c)
it gets warmer and more dense
d)
it gets warmer and less dense
8.
What is a deep valley in the ocean formed at a convergent boundary?
a)
continental shelf
b)
mid-ocean ridge
c)
trench
d)
abyssal plain
9.
What is a flat plain deep in the ocean?
a)
abyssal plain
b)
trench
c)
mid ocean ridge
d)
continental shelf
10.
What is a long, underwater mountain chain formed at a divergent plate boundary?
a)
trench
b)
mid-ocean ridge
c)
continental shelf
d)
continental rise
11.
What underwater features are formed at plate boundaries?
a)
trenches and mid-ocean ridges
b)
continental shelf and slope
c)
abyssal plains and mountains
d)
guyots and seamounts
12.
What is the primary cause of waves?
a)
wind
b)
density
c)
salinity
d)
the moon
13.
What is the measure of the amount of dissolved salts in a liquid?
a)
density
b)
salinity
c)
density
d)
Coriolis effect
14.
If the first low tide of the day occurs at 4 AM, the next low tide will occur around
a)
4 PM
b)
noon
c)
10 AM
d)
4 AM the next day
15.
We have _____ tides each day.
a)
1 high and 1 low
b)
2 high and 2 low
c)
4 high
d)
it depends
16.
What causes tides?
a)
wind
b)
differences in density
c)
gravity from the moon
d)
plate tectonics
17.
Where is the most dense ocean water?
a)
deep in the ocean
b)
at the surface
c)
in the middle layer
d)
at the coast
18.
How does the moon affect Earth?
a)
it causes plate tectonics
b)
it causes tides
c)
it causes wind
d)
it causes the weather
19.
Where does most water vapor in the air come from?
a)
transpiration
b)
evaporation from groundwater
c)
evaporation from oceans
d)
precipitatoin
20.
How does the moon, Earth, and sun being aligned impact tides?
a)
it creates spring tides
b)
it creates neap tides
c)
it cancels out tides
d)
it causes dense tides
21.
Both the moon and sun create tides. Why does the moon have a greater effect?
a)
the moon is a solid
b)
the moon is larger than the sun
c)
the moon is farther from the Earth
d)
the moon is closer to the Earth
22.
How does the gravitational pull of the moon impact Earth's oceans?
a)
it causes the ocean to bulge on the side nearest the moon and opposite the moon
b)
it causes the water to buldge on the side farthest from the moon
c)
it does not affect Earth's oceans
d)
the affect is random
23.
How could an understanding of surface currents help early explorers and traders?
a)
it helped them find quicker sailing routes
b)
it kept their boat from sinking
c)
it helped them find passengers
d)
it kept them rich
24.
What is the name of the area of the ocean floor where you would play at the beach?
a)
abyssal plain
b)
trench
c)
continental shelf
d)
continental slope
25.
Where would you expect to find the coldest ocean water?
a)
continental slope
b)
continental shelf
c)
seamount
d)
trench
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