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NR 150 OCEANOGRAPHY EXAM 1 UPDATED ACTUAL Questions and CORRECT Answers
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NR 150 OCEANOGRAPHY EXAM 1 UPDATED ACTUAL Questions and CORRECT Answers The oceanic crust is made of __________ ? - CORRECT ANSWER- Basalt About ____ percent of Earth's water is found in the ocean. - CORRECT ANSWER- 97% A boundary in which crustal plates move past one another is called a: - C...

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  • October 14, 2024
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NR 150 OCEANOGRAPHY EXAM 1
UPDATED ACTUAL Questions and
CORRECT Answers
The oceanic crust is made of __________ ? - CORRECT ANSWER- ✔✔Basalt



About ____ percent of Earth's water is found in the ocean. - CORRECT ANSWER- ✔✔97%


A boundary in which crustal plates move past one another is called a: - CORRECT
ANSWER- ✔✔Transform Fault



Active continental margins are located : - CORRECT ANSWER- ✔✔on the west coasts of
both North and South America


An example of a fishing technique that is particularly disruptive is ____. - CORRECT
ANSWER- ✔✔bottom trawling


At an ocean to ocean plate boundary, which plate will be subducted ? - CORRECT
ANSWER- ✔✔The older one, because it is usually cooler


Drift nets were developed in response to demands that fishing nets take only target species,
and that fishing ought to be more environmentally sensitive. T or F - CORRECT ANSWER-
✔✔False


Earlier than 200 million years ago, the continents were joined into one supercontinent called:
- CORRECT ANSWER- ✔✔Pangaea


Earthquakes provided evidence that the outer core is liquid, because : - CORRECT
ANSWER- ✔✔p and s waves have different shadow zones. One wave can penetrate liquids,
the other cannot.


Gravity was important in the formation of our planet because it pulled dense metals such as
iron and nickel inward, forming the Earth's core. T or F - CORRECT ANSWER- ✔✔True

,Physical resources result from the deposition, precipitation, or accumulation of useful
substances in the ocean or on the seabed. T or F? - CORRECT ANSWER- ✔✔True


Marine energetic resources include all the following, EXCEPT :
- Wind Power
-Harnessing power from currents and waves
- Oil and petroleum

- Harnessing the power from tidal waves - CORRECT ANSWER- ✔✔Oil and petroleum


Scientific hypotheses are never revised or updated. T or F? - CORRECT ANSWER-
✔✔False


Second to petroleum and natural gas, the most profitable resource recovered from the marine
environment is: - CORRECT ANSWER- ✔✔Sand and Gravel



The Earth is density stratified. T or F? - CORRECT ANSWER- ✔✔True


The Mid-Atlantic spreading ridge is above ground on Iceland. T or F? - CORRECT
ANSWER- ✔✔True


The Mariana Trench is the deepest feature on Earth: T or F? - CORRECT ANSWER-
✔✔True


A hotspot is a plume of magma rising from a stationary source near the core-mantle
boundary. T or F? - CORRECT ANSWER- ✔✔True


Magnetite is a magnetic mineral found in basalt and its orientation provided evidence for
plate tectonics. T or F? - CORRECT ANSWER- ✔✔True



Roughly how fast do most lithospheric plates move ? - CORRECT ANSWER- ✔✔about 5
centimeters per year

, The fastest growing alternative energy source is: - CORRECT ANSWER- ✔✔Wind Power


The hot, partially melted, slowly flowing layer of the Earth is called the: - CORRECT
ANSWER- ✔✔Asthenosphere


The inner core of the Earth is primarily made of __________. - CORRECT ANSWER-
✔✔Iron


The magnetic striping of the seafloor is considered evidence of seafloor spreading and: -
CORRECT ANSWER- ✔✔periodic reversals in the polarity of the Earth's magnetic field.



The world ocean: - CORRECT ANSWER- ✔✔is the dominant feature of the Earth and most
of its living organisms.


The outermost soild layer of the Earth that comprises both continental and oceanic crust is
called the: - CORRECT ANSWER- ✔✔Lithosphere


The theory of continental drift was correctly explained because of all the following, EXCEPT
:
- Continents fit together
-Mountain ranges on different continents match
- Fossils of the same species
-the crust and mountains are supported by mechanical scaffolding - CORRECT ANSWER-
✔✔the crust and mountains are supported by mechanical scaffolding



The youngest seafloor rocks are found... - CORRECT ANSWER- ✔✔near the rift valleys of
the mid-ocean ridges.


What do these things have in common: Paleomagnetism, seafloor spreading, Pangaea,
Wadati-Benioff zones, transform faults, fracture zones, seamount chains, and Pacific
hotspots. - CORRECT ANSWER- ✔✔They are involved with plate tectonics.

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