intro to oceanography: exam 1

is the component with the greatest concentration in the Earth's atmosphere

is the most abundant greenhouse gas that also influences air density

the magnetic pattern recorded in the seafloor is best described as

river input

the 5 principal ocean basins are the

tis is the basic building blocks of all matter

which of the following reptile fossils found in south america & africa, was used as evidence to help reconstruct Pangea?

the west wind drift current is a

the trade winds are located at

high temperature

The sun and the rest of the solar system formed about 5 million years ago from a huge cloud of dust and gas called a

ekman transport

boundary between the troposphere and stratosphere

Which of the following statements regarding continental & oceanic crust is true?

earth's primordial atmosphere most likely included

all continents fit together with the least number of overlaps and gaps when the continents are matched along

sea ice formation

Negatively charged subatomic particles that orbit an atomic nucleus are called

the tropic of cancer is

the polar easterly winds are

the ekman spiral is caused by

this bond holds adjacent water molecules together

downwelling is

is the rising and sinking air masses moving in a circular fashion

which current moves in a circular path around a subtropical convergence, reflecting ekman transport, gravity & coriolis?

Segments of the mid-oceanic ridge system that are gentler in slope & less rugged, due to faster rates of seafloor are

is the lowermost portion of Earth's atmosphere where most weather occurs

the gulf stream is a

Passive continental margins are the result of

the mariana trench is an example of ___ plate boundary.

which of the following is a biogenous sediment?

Relatively few abyssal plains are located in the Pacific Ocean because of

equatorial currents are driven by the

geostrophic current is the

this is a change in state from gas to liquid

current scientific knowledge indicates that most likely the origin of (most) water in earth's oceans was from

the gulf of california is an example of ___ plate boundary.

this is defined by a rapid change in seawater salinity with slight change in depth

This type of marine sediment forms the thickest deposits worldwide.

the largest ocean basin, which currently covers more than half of the ocean surface, is the

the Inter-Tropical Convergence Zone (ITCZ) is

the most likely place you are going to find abundant manganese nodules is on the

the Big Island of Hawaii is an example of a volcanic island associated with volcanic activity at a

Which of the following was the most convincing piece of evidence to support the concept of sea floor spreading?

sediments that are the result of chemical reactions in seawater are called

plankton shells made of calcium carbonate are most likely to dissolve in seawater with

this is defined by a rapid change in water density with slight change in depth.

which of the following was not used as evidence for continental drift?

which is the main process that forms the thick layers of ooze making up the abyssal plains on deep ocean floors?

this is a change in state from liquid to gas

evaporation

the average velocity of tectonic plates is about as fast as

Earth is about

This is a change in state from solid to gas

Based on theory of plate tectonics, you would find ___ heat flow at mid-ocean ridges; ___ heat flow at subduction zones

Which of the following best describes turbidity currents?

the california current is a

upwelling is

Why are satellites used to map the ocean floor?

this bond involves the sharing of electrons . between atoms

The average depth of the world's oceans is approximately

precipitation

the westerly winds are

oceanographers who study oceanic crust beneath the seafloor sediments use which of the following techniques?

charged atoms due to the gain or loss of one or more electrons are called