Exam 13: The Ocean Floor

African dust from the Sahara desert is observed across the Atlantic as far west as the Caribbean region where it produces a hazy sky condition during the annual dry season. You are a climate scientist and make a prediction that the Sahara was not a desert during glacial periods in the northern hemisphere. How could you test this hypothesis by looking at deep sea sediments from the Atlantic off west Africa?

Which ocean is almost entirely within the Southern hemisphere?

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Which of the following generally has the lowest surface slope?

The first systematic bathymetric measurements came on the voyage of______ .

An_______ is a volcanic mountain, built up from the seafloor that never reached the sea surface.

Which of the following is associated with ocean ridges?

Abyssal plains with sediments covering the seafloor igneous rocks are _______ in the central Pacific basin than in the North Atlantic.

How do calcareous oozes form?

Seamounts______.

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

An_______ is the vast, relatively deep, flat, sediment- covered portion of the deep- ocean basin.