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Marine Science Segment 1 Exam Questions and Answers
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Marine Science Segment 1 Exam Questions and Answers
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Marine Science Segment 1 ExamQuestions and Answers
Epipelagic zone - Answer -first zone, aka sunlight zone, extends from surface to 200
meters deep
Mesopelagic zone - Answer -aka twilight zone, second zone, extends 200-1,000 meters
deep, only a faint amount of light
Bathypelagic zone - Answer -third zone, aka midnight zone, extends 1,000-4,000
meters deep
Abyssopelagic zone - Answer -fourth zone, aka abyss, extends 4,000-6,000 meters
deep, temp is near freezing
Hadal zone - Answer -fifth and last zone, extends 6,000 meters-deepest parts
sublimation - Answer -solid to gas bypassing the liquid state
deposition - Answer -gas to solid bypassing the liquid state
higher salinity means _______ water - Answer -denser
higher temperature means _______ water - Answer -less dense
deeper water is _________ shallow water - Answer -denser than
Low vapor pressure - Answer -keeps earth's bodies of water from evaporating quickly
high boiling point - Answer -if water did have such a high one, it would be a vapor at
earth's temp
Lower density as a solid - Answer -allows ice to float, which allows fish and other sea
life to live in very cold temps
What technology helped scientists discover mid-ocean ridges and further the evidence
for continental drift theory? - Answer -sonar
, what is the theory of plate tectonics - Answer -the layer of the earth under the crust, the
mantle, moves through convection, so the solid plates resting on the mantle move to.
The crust - Answer -oceanic and continental move in large pieces called plates due to
the heat convection in the mantle
The mantle - Answer -has the lithosphere which is the cool, solid top layer and the
asthenosphere which is the hot and soft bottom layer
The core - Answer -Earth's internal heat, inner part is solid because of high pressure
and the outer part is a liquid iron nickel alloy
What are the seven plate boundaries - Answer -antarctic, indo-australian, pacific, south
american, north american, african, and eurasian.
Where do plate boundaries occur? - Answer -where the plates meet
How is plate movement measured? - Answer -centimeters per year
Which type of crust is thinner and denser? - Answer -oceanic
Which type of crust is thicker and less dense? - Answer -continental
Trench - Answer -long and narrow opening in the crust usually above a subduction zone
Mid-ocean ridge - Answer -where oceanic plates diverge, and new seafloor is created
through seafloor spreading
What plains cover more than 50% of the earth's surface - Answer -abyssal plains
What are normal wind conditions - Answer -strong westward winds along equator
pushing back warm surface water near South America across the pacific. Cooler water
rises up to surface
what are el nino wind conditions - Answer -normally strong winds are weaker and can
sometimes go in the opposite direction of how they do in normal conditions
what are la nina conditions - Answer -winds become unusually strong, blowing warm
water eastward. Brings cold water to the surface near south america in a process called
upwelling
What do ocean currents do for the earth - Answer -keep temperatures across the earth
stable
How do warming ocean waters affect currents - Answer -slows normal movement and
mixing, causes cold temps and crop failures in place that rely on warm weather
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