1. Minisubmarines, such as Alvin, are limited in their use because they:
cannot descend to very deep watercannot collect samples or take readings
take too long to move along the bottomtake too long to descend and to return to the surface
2. The shelf edge is the boundary between the continental shelf and the:
shorelinecontinental slope
trenchcontinental rise
3. _____ are long, narrow valleys in the ocean floor found near islands or coastal mountain ranges.
Ocean basinsMid ocean ridges
TrenchesAbyssal plains
4. A _____ is marked by its thick sediment accumulation.
continental shelfcontinental slope
continental risenone of these is correct
5. Hudson, Monterey, and Hatteras are examples of:
abyssal hillslarge atolls
research shipssubmarine canyons
6. _____ are the flattest places on Earth.
Ocean basinsMid ocean ridges
TrenchesAbyssal plains
7. An underwater volcano:
guyoutatoll
seamountnone of these
8. Abyssal hills are found on the seafloor between:
mid-ocean ridges and continental risescontinental rises and deep-sea trenches
deep-sea trenches and abyssal plainsabyssal plains and mid-ocean ridges
9. Atolls are examples of _____.
crustal sinkingunderwater volcanoes
underwater mountainsnone of these
10. At what point in history did geologists dismiss the premise that the ocean floor was flat?
the Fifteenth Centurythe Revolutionary War
the Civil WarWorld War II
11. Which method is currently used LEAST to measure the depth of ocean floors?
lead weightsonar
satelliteall of these methods are used currently
12. Which method of studying the ocean floor gives some degree of proximity but is efficient in terms of time as well?
minisubmarinessonar
undersea vehiclesgrab sample
13. The ocean floor is divided into two major regions, _____ and _____.
continental margins and ocean basinscontinental shelves and ocean basins
continental slope and ocean basinscontinental slope and continental shelf
14. A simple method of obtaining an actual sample of seafloor sediment is with a:
lead-weighted linegrab sampler
hydraulic-piston corerrobot submarine
15. Satellites can obtain information about the seafloor because:
the satellite can "see" through sea waterseafloor sediments radiate infrared light
the color of the surface water varies with seafloor depththe sea surface level varies with seafloor depth
16. Deep valleys that run through a continental slope are called:
continental risesmid-ocean ridges
submarine canyonscontinental shelves
17. The source of most of the material found on the surface of the abyssal plain is:
continental riversocean surface
abyssal hillsmid-ocean ridges
18. Which seafloor feature is not found on active continental margins?
deep-sea trenchcontinental rise
continental shelfcontinental slope
19. Sinking volcanic islands and developing coral reefs are related to the formation of:
atollsoozes
abyssal hillsdeep-sea trenches
20. Which of the following is NOT a continental margin?
continental shelfcontinental slope
continental riseall of these are continental margins
21. In which ocean are most of the deep-sea trenches located?
AtlanticArctic
IndianPacific
22. A ring-shaped coral reef around a lagoon:
guyoutatoll
seamountnone of these
23. At the _____, the water depth increases greatly in comparison to areas closer to the shoreline.
continental shelfcontinental slope
continental risenone of these is correct
24. Which method of studying the ocean floor allows oceanographers to be closest to the ocean floor?
minisubmarinessonar
undersea vehiclesgrab sample
25. _____ are thought to represent the original sea floor because sediments top them.
Ocean basinsMid ocean ridges
TrenchesAbyssal hills
26. An underwater volcano with a "sliced top":
guyoutatoll
seamountnone of these
27. How does sonar work?
an object in space precisely measures the ocean surfacean object emits sound waves that bounce off of the ocean floor and record its depth
a line is dropped into the ocean and its length is measured once it hits the floornone of these is correct
28. _____ are undersea mountain ranges.
Continental risesMid-ocean ridges
Submarine canyonsContinental shelves
29. This area is between the continental slope and ocean basin:
continental risesmid-ocean ridges
submarine canyonscontinental shelves
30. The _____ is a shallow extension of the continent that extends beyond the shoreline.
continental shelfcontinental slope
continental risenone of these is correct
I am sorry, but this should be in your geology book. It is quite a bit to answer
August 26th, 2009 at 12:25 pm
WTF?
References :
August 26th, 2009 at 12:40 pm
I am sorry, but this should be in your geology book. It is quite a bit to answer
References :