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Which temperaturenis inferred to exist in Earths plastic mantle? 

• 5,000
• 2,000
• 3,000
• 6,000

In which earth layer are most convection currents that cause seafloor spreading thought to be located?

• outer core
• inner core
• asthenosphere
• crust

• 1
• 2
• 3
• 4

The daily tidal range is greatest during ____________tide:

• ebb
• spring
• neap
• all of the above

Which number is closest to the number of earthquakes with a magnituted greater than or equal to 6, that occurred in 2011

• 450
• 9000
• 200
• 9380

Where would you most likely find a boundary between a continental and an oceanic plate

• In  the center of the pacific
• In  the center of North America
• off the west coast of North America
• At the boundary between Canada and the United States

The coriolis effect:

• applies only to tides
• is caused by earth's rotation
• is greatest nea the equator

which of the following water  masses would be the most dense?

• warm water with high salinity
• cold water with with low salinity
• cold water with high salinity
• all of these would be equally dense

coriolis effect, surface ocean currents are deflected to the ________of  their path  of motion in the northern hemisphere

• right
• left
• middle
• not at all

Concerning the distribution of land and water, which of the following statements is true?

• The percentage ofland and water is about the same in both Northern and Southern Hemispheres
• The southern hemishpere has much more water surface than the Northern hemisphere
• the northern hemisphere has much more water surface than the soutern hemispheres
• none of these