Ocean Test Question Preview (ID: 35622)

This Is A Test Over Oceans.

What are mid-ocean ridges?
a) They are areas where tectonic plates meet
b) They are narrow valleys that run along the bottome of the oceans
c) They are areas underwater where thick layers of sediment have accumulated
d) They are areas of underwater mountain chains located near many active volcanoes.

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) high mountains and deep valleys
c) ocean ridges with active colcanoes
d) coral reefs with many varieties of life

Which best represents the order of seafloor features as you move from the shoreline to the deep ocean?
a) continental slope-continental shelf- continental rise- mid-ocean ridge
b) continental rise - continental shelf- mid-ocean ridge- continental slope
c) continental shelf- continental slope- continental rise - mid-ocean ridge
d) mid-ocean ridge- continental rise- continental shelf- continental slope

When ice forms in the oceans, what happens to the water found directly underneath the newly formed ice?
a) it becomes colder.
b) it becomes warmer
c) it becomes denser
d) it becomes more salty

Tropical seas have a high rate of evaporation Because of this, the water in tropical seas will have higher ___________
a) wave crests
b) amounts of algae
c) daily temperatures
d) salt concentrations

Which of these increases as a submarine dives deeper in the ocean?
a) the water pressure
b) the water temperature
c) the freshness of the water
d) the number of plants in the water

The floor of the ocean ___________________
a) is smooth and sandy
b) has rivers and lakes
c) is hidden and unknown
d) has mountains and trenches

The section of a continent that lies just off the shoreline and extends beneath the ocean is called the continental _____________________
a) plain
b) shelf
c) basin
d) ridge

The salts in the ocean come from ______________
a) acid rain
b) particles falling from space
c) organisms that live in the sea
d) weathering and erosion from rocks.

Many gallons of freshwater pour into the oceans each day. However, the salinity balance is maintained because ___________
a) sea organisms consume the freshwater.
b) the water becomes salty as it enters the ocean
c) water continuously evaporates back out of the ocean
d) salty glacial water is also evaporating from the ice caps

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 is always much colder than the water in the Atlantic Ocean.
b) The water in the Atlantic Ocean contains more dissolved minerals than the water in Lake Blackshear.
c) The water in Lake Blackshear comes from rivers, while the water in the Atlantic Ocean comes from rain.
d) The water int eh Atlantic Ocean is part of the water cycle, but the water in the Lake Blackshear is not.

Ocean water differs from freshwater in that it has _____________
a) a lower temperature
b) a higher temperature
c) a higher concentration of silicon dioxide
d) a higher concentration of sodium chloride

What are the two most abundant elements dissolved in seawater?
a) Ca and Cl
b) Na and Mg
c) Na and Cl
d) Mg and Ca

Algae and plants need lots of sunlight. Most ocean algae would be found in the water ______________
a) on the abyssal plain
b) in the oceanic trench
c) above the continental shelf
d) beside the continental slope

At which ocean feature would the greatest amount of water pressure be exerted?
a) trench
b) abyssal plain
c) continental shelf
d) continental slope

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