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Intro to Marine Science final exam questions and answers
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Intro to Marine Science final exam questions and answers
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Intro to Marine Science final examquestions and answers
What percentage of Earth i covered with oceans? - Answer -70.8 %
List the major oceans found on our planet - Answer -Artic, Atlantic, Indian, Pacific, and
Southern
What percentage of all water on planet Earth is oceanic? - Answer -97.2%
The smallest of the major oceans is - Answer -The Artic
The study of waves, tides, currents, weather, and climates are all a function of which
major discipline of oceanography? - Answer -Physical Oceanography
The study of marine life and its aspects is - Answer -Oceanography
What is the deepest part of Earth called, and how deep is it? - Answer -The Mariana
Trench at 11,022 meters (36,161 feet)
The first person to be given credit for circumnavigating planet Earth was/is - Answer -
Ferdinand Magellan
Celestial navigation, a fairly accurate circumference of Earth, and the first substantial
role map were all accomplished/produced y which people? - Answer -The Greeks,
Pytheas: reaced Iceland 325 B.C. by celestial navigation; 1st to determine latitude.
Compare continental and oceanic crust - Answer -Oceanic crust underlies ocean
basins, has high density 3.0 g/cm3 (5 Miles)
Continental crust underlies continents, has lower density 2.7/cm (22 Miles)
all major geological features on earth, such as volcanoes, earthquakes, trenches,
mountain ranges, etc., can be explained by what? - Answer -Plate Tectonics
List the evidence for continental drift and/or sea floor spreading - Answer -Magnetic
stripes in ocean floor rock
Earthquake patterns
Measurements of ocean floor rocks
, The study of how chunks of lithosphere float horizontally and interact on top of a plastic
asthenosphere is known as ___________, which can be classified as a field of study
under ______________ oceanography. - Answer -plate tectonics, Marine Geology
List the 3 major types of tectonic plate boundaries - Answer -Divergent (Apart)
Convergent (Together)
Transform (Slide Past)
When an oceanic-continental plate collision occurs, which crust is subducted? - Answer
-Oceanic Crust subducts under continent - ocean crust is more dense,
List the major types of marine sediments - Answer -Lithogenous, Biogenous,
Hydrogenous, and Cosmogenous
Silica-based biogenous sediment is generally found in ____________ water, while
calcium-based sediment is generally found in __________ water. - Answer -sunlit
surface water, cool deep water
A sediment type that has a high content of evoporites, iron, manganese, copper, and
zinc would be considered which type of sediment? - Answer -Hydrogenous
What physical factor has the least influence on the distribution of marine sediments? -
Answer -Neritic
Define and explain hydrothermal vents - Answer -Ocean water that percolates down
through fractures in recently formed ocean floor is heated by underlying magma and
surfaces again through these vents. They are usually located near the axis of spreading
along the mid-ocean ridge.
Aseismic extensions of transform fault lines are known as - Answer -Fracture
Define and explain marine snow - Answer -A shower of organic material falling from
uppers waters to the deep ocean. Biological debris that falls from higher in the water
column is also known as marine snow. Some flakes fall for weeks before finally
reaching the ocean floor.
Most oceanic trenches and geological activity is/are found in which major ocean? -
Answer -Pacific
The transition between the continental crust and oceanic crust is found in where? -
Answer -Continental Rise
How much cosmogenous sediments reach earth's surface each year from outer space?
- Answer -3000,000 tons
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