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Ocean Test
Test Description: This is a test over Oceans
Instructions: Answer all questions to get your test result.
1) Ocean water differs from freshwater in that it has _____________
A
a higher concentration of sodium chloride
B
a higher concentration of silicon dioxide
C
a higher temperature
D
a lower temperature
2) What are the two most abundant elements dissolved in seawater?
A
Ca and Cl
B
Mg and Ca
C
Na and Cl
D
Na and Mg
3) The salts in the ocean come from ______________
A
acid rain
B
weathering and erosion from rocks.
C
particles falling from space
D
organisms that live in the sea
4) Many gallons of freshwater pour into the oceans each day. However, the salinity balance is maintained because ___________
A
water continuously evaporates back out of the ocean
B
salty glacial water is also evaporating from the ice caps
C
sea organisms consume the freshwater.
D
the water becomes salty as it enters the ocean
5) There are many bodies of water in or next to Georgia, including Lake Blackshear and the Atlantic Ocean. What is MOST LIKELY a difference between the water in Lake Blackshear and the water in the Atlantic Ocean?
A
The water in Lake Blackshear comes from rivers, while the water in the Atlantic Ocean comes from rain.
B
The water in Lake Blackshear is always much colder than the water in the Atlantic Ocean.
C
The water in the Atlantic Ocean contains more dissolved minerals than the water in Lake Blackshear.
D
The water int eh Atlantic Ocean is part of the water cycle, but the water in the Lake Blackshear is not.
6) When ice forms in the oceans, what happens to the water found directly underneath the newly formed ice?
A
it becomes denser
B
it becomes more salty
C
it becomes warmer
D
it becomes colder.
7) Tropical seas have a high rate of evaporation Because of this, the water in tropical seas will have higher ___________
A
daily temperatures
B
wave crests
C
salt concentrations
D
amounts of algae
8) Which of these increases as a submarine dives deeper in the ocean?
A
the water pressure
B
the freshness of the water
C
the number of plants in the water
D
the water temperature
9) The floor of the ocean ___________________
A
has mountains and trenches
B
is hidden and unknown
C
has rivers and lakes
D
is smooth and sandy
10) The section of a continent that lies just off the shoreline and extends beneath the ocean is called the continental _____________________
A
ridge
B
basin
C
shelf
D
plain
11) Which best represents the order of seafloor features as you move from the shoreline to the deep ocean?
A
continental rise - continental shelf- mid-ocean ridge- continental slope
B
mid-ocean ridge- continental rise- continental shelf- continental slope
C
continental shelf- continental slope- continental rise - mid-ocean ridge
D
continental slope-continental shelf- continental rise- mid-ocean ridge
12) If you could look at the deep ocean floor, which is the best description of what you would see?
A
flat, sil-covered, lifeless regions
B
coral reefs with many varieties of life
C
high mountains and deep valleys
D
ocean ridges with active colcanoes
13) What are mid-ocean ridges?
A
They are areas where tectonic plates meet
B
They are areas underwater where thick layers of sediment have accumulated
C
They are areas of underwater mountain chains located near many active volcanoes.
D
They are narrow valleys that run along the bottome of the oceans
14) Algae and plants need lots of sunlight. Most ocean algae would be found in the water ______________
A
above the continental shelf
B
on the abyssal plain
C
in the oceanic trench
D
beside the continental slope
15) At which ocean feature would the greatest amount of water pressure be exerted?
A
trench
B
continental shelf
C
continental slope
D
abyssal plain
*select an answer for all questions
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