-
About _____ % of the Earth surface is covered with water.
71
-
The three methods used to measure Ocean Depth are _____, _____, and _____.
- Rope & Weight
- SONAR
- Satellite Altimetry
-
If a sound pulse took 6 seconds to return from the seafloor, and if the speed of sound is 1500 m/sec, the depth is _____.
-
The 3 components of the Continental Margin are the _____, _____, and _____.
Shelf, Slope, Rise
-
The Continental _____ is the submerged part of the continent. Its width varies with changing _____.
Margin, Sea levels.
-
The true edge of the continent is marked by the continental _____.
Slope.
-
Most beach sediments eventually end up depositing at the continental _____, at the foot of the _____.
Rise, Slope
-
_____ form by the covering of the rocky seafloor with mud falling from seawater.
Abyssal Plains
-
_____ is the location where the seafloor forms and _____ are where they are destroyed.
MOR (Mid-Oceanic Ridge), Trench
-
The feature that clearly indicates that the seafloor spreads from the _____ is the _____ valley.
MOR (Mid-Oceanic Ridge), Rift
-
Fresh lava flows, and _____ along the _____ valleys indicates that the seafloor is spreading continuously.
Earthquakes, Rift
-
As seafloor moves away from the MOR, it _____ taking any seamounts _____ with it.
Sinks, Down
-
Seamounts are submarine _____. They form over _____, or _____.
Volcanoes, Hotspots, Subduction Zones
-
List the evolution of seamounts.
- Seamount
- Volcanic Island
- Atoll
- Guyot
-
Ocean basins are generally _____than continents.
Younger
-
Submarine canyons are deep _____ that cut acoss continental _____.
Valleys, Margin
-
Submarine canyons transport coastal _____ to the continental _____.
Sediments, Rise
-
The top of a guyot is _____ due to _____ by waves.
Flat, erosion.
-
Turbidity currents are submarine _____of mud and sand, and they transport sediments very _____.
Avalanches, Far.
-
If the global sea level increased the area of the continental shelves will _____.
Increase
-
Submarine canyons form primarily due to mass movement along the continental _____.
Slope
-
_____ are submerged seamounts with coral reefs on them. They commonly enclose a _____.
Atolls, lagoon
-
The Continental _____ is the submerged extension of the continents.
Shelf
-
Ocean = Seawater + _____
Basin
-
The shape and size of ocean basins constantly _____ over geologic time.
changes
-
_____ are the deepest parts of oceans. They form due to _____ of the seafloor into the Mantle.
Trenches, Subduction (Sinking)
-
Ocean Basins _____ along Mid-Oceanic Ridges.
Form
-
Submarine canyons are _____ trenches.
NOT
-
All trnches are actuall over 27,000 feet deep, but most of them are filled with _____ that come from nearby continents.
Sediments
-
MORs can be identified by the presence of the _____ at the top.
Rift Valleys
-
During the Ice Ages when the sea level was low, the continental shelves we _____.
Shorter/Smaller/Narrower
-
Most ocean trenches are found in the _____ Ocean.
Pacific
-
Oceans form by _____ moving apart.
Continents
-
All oceans have a _____ in them.
MOR (Mid-Oceanic Ridge)
-
Due to Global Warming the width of the continental shelves is _____.
increasing
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