EARTH SCIENCE 1086 EXAM 4 | 2025-2026 LATEST UPDATED|30 REAL
EXAM | COMPLETE QUESTIONS AND ANSWERS | 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+
What is the primary driving source of surface ocean currents? How do the
distribution of continents on Earth and the Coriolis effect influence these currents?
10 - (answer)10/ Wind is the primary source of surface ocean currents. The
Coriolis effect influences currents. This is due to earth's rotation, currents are
deflected to the right of the northern hemisphere and to the left of the southern. As
a consequence, gyres flow in opposite directions in the two different hemispheres.
What is a gyre? How many currents exist within each Gyre? Name the five
subtropical gyres. 10 - (answer)10/ A gyre are huge circular - moving current
systems that dominate the surfaces of the ocean. The five subtropical gyres are the
"North Pacific","South Pacific","North Atlantic","South Atlantic", and the "Indian
Ocean."
How do currents influence climate, give at least one example? 10 - (answer)10/
There is a net gain of energy in lower latitudes and a net loss at higher latitudes.
Because the tropics are not becoming progressively warmer, nor the polar regions
colder, there must be a large scale transfer of heat from areas of excess to areas of
, deficit. The transfer of heat by winds and ocean currents equalizes these latitudinal
energy imbalances.
Describe the process of coastal upwelling. Why is an abundance of marine life
associated with these areas? 10 - (answer)10/ Upwelling, the rising of cold water
from deeper layers to replace warmer surface water, is a common wind induced
vertical movement. Coastal upwelling occurs in areas where winds blow towards
to equator and parallel to the coast. Upwelling brings greater concentrations of
dissolved nutrients to the ocean surface, thus promoting the growth of plankton,
which in turn support extensive populations of fish and other marine organisms.
What is the driving force of deep ocean circulation? Why is the movement of deep
currents often termed Thermohaline circulation? 10 - (answer)10/ Deep Ocean
Circulation is caused by differences in temperature and salinity, thus giving it the
reference of Thermohaline, which means heat and salt, circulation.
What is beach drift? How is it related to a longshore current? Why are beaches
often called rivers of sand? 10 - (answer)10/ Beach drift is the transport of
sediment in a zig zag pattern along a beach caused by the uprush of water from
obliquely breaking waves. Long shore currents act in similar way, and the beach is
EXAM | COMPLETE QUESTIONS AND ANSWERS | 100% RATED
CORRECT | 100% VERFIED | ALREADY GRADED A+
What is the primary driving source of surface ocean currents? How do the
distribution of continents on Earth and the Coriolis effect influence these currents?
10 - (answer)10/ Wind is the primary source of surface ocean currents. The
Coriolis effect influences currents. This is due to earth's rotation, currents are
deflected to the right of the northern hemisphere and to the left of the southern. As
a consequence, gyres flow in opposite directions in the two different hemispheres.
What is a gyre? How many currents exist within each Gyre? Name the five
subtropical gyres. 10 - (answer)10/ A gyre are huge circular - moving current
systems that dominate the surfaces of the ocean. The five subtropical gyres are the
"North Pacific","South Pacific","North Atlantic","South Atlantic", and the "Indian
Ocean."
How do currents influence climate, give at least one example? 10 - (answer)10/
There is a net gain of energy in lower latitudes and a net loss at higher latitudes.
Because the tropics are not becoming progressively warmer, nor the polar regions
colder, there must be a large scale transfer of heat from areas of excess to areas of
, deficit. The transfer of heat by winds and ocean currents equalizes these latitudinal
energy imbalances.
Describe the process of coastal upwelling. Why is an abundance of marine life
associated with these areas? 10 - (answer)10/ Upwelling, the rising of cold water
from deeper layers to replace warmer surface water, is a common wind induced
vertical movement. Coastal upwelling occurs in areas where winds blow towards
to equator and parallel to the coast. Upwelling brings greater concentrations of
dissolved nutrients to the ocean surface, thus promoting the growth of plankton,
which in turn support extensive populations of fish and other marine organisms.
What is the driving force of deep ocean circulation? Why is the movement of deep
currents often termed Thermohaline circulation? 10 - (answer)10/ Deep Ocean
Circulation is caused by differences in temperature and salinity, thus giving it the
reference of Thermohaline, which means heat and salt, circulation.
What is beach drift? How is it related to a longshore current? Why are beaches
often called rivers of sand? 10 - (answer)10/ Beach drift is the transport of
sediment in a zig zag pattern along a beach caused by the uprush of water from
obliquely breaking waves. Long shore currents act in similar way, and the beach is
