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Slow spreading rates are typically_____________________.
2 to 5 cm/year
Spreading rates are constant among mid-ocean ridges.
A flat-topped volcano that has been eroded by ocean waves.
Mid-ocean ridges are narrow and steep sided.
The flooded edge of the continent is the ___________________.
Passive margins are not plate boundaries.
The image below shows a series or chain of _______________ on the abyssal plain of the
Atlantic Ocean. (blue pic with bear, kelvin, and manning)
Fast spreading rates are typically __________________.
10 to 20 cm/year
The east Pacific rise is a fast spreading ridge.
Which of the following are types of ocean sediments?
all of the above
A deep-sea geyser that forms at or near mid-ocean ridges is a ______________.
Passive margins are formed as continents rift apart to form new oceanic basins.
______________ sediments crystalize directly from seawater. These include evaporites or manganese nodules.
The zone between the continental shelf and continental rise is the ________________.
______________sediment is mainly the tests and shells of organisms.
Mid-ocean ridges are not covered in ocean sediments.
The deep flat part of the ocean floor is the ____________.
The image below shows a(n) ______________. (green circle outline)
Mid-ocean ridges make up a continous mountain chain that is present in all major oceans.
Ultra-slow spreading rates are typically ____________________.
< 2 cm/year
Active margins refer to continental edges at convergent plate boundaries. For example, the west coast of South America.
Mid-ocean ridges are also known as a _______________ boundary.
Identify letter A in the image above. (blck/ yt 'the ocean floor')
The image above shows a _____________. (one arrow going away and the other going towards me)
Ridges are held up by thermal bouyancy and subside to create deep basins as they cool with age.
The area between the abyssal plane and the continental slope is the ______________.
Identify letter F in the image above. (blck/ yt 'the ocean floor')
Identify letter D in the image above (blck/ yt 'the ocean floor')
Atolls are donut-shaped islands made of coral that have grown on subsiding volcanoes.
Identify letter G in the image above. (blck/ yt 'the ocean floor')
______________ sediment is mainly minerals and rocks collected from the continents.
Identify letter C in the image above. (blck/ yt 'the ocean floor')
The mid-Atlantic ridge is a slow spreading ridge.
Passive margins are plate boundaries.
Mid-ocean ridges are covered in ocean sediments just like the abyssal plane.
Active margins surround the ______________ ocean.
Passive margins occur at the edges of continents where they connect to oceanic crust.
Passive margins surround the ______________ ocean.
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