The _____ inclines more steeply than the continental slope and rise and features submarine canyons and turbidity currents. continental rise b....

41. The _____ inclines more steeply than the continental slope and rise and features submarine canyons and turbidity currents.

a. continental rise 

b. continental slope 

c. continental shelf 

d. oceanic ridge 

42. A (An)_____ is volcanically active and is the site where new oceanic crust forms.

a. oceanic rift 

b. active margin 

c. passive margin 

d. guyot 

43. A (An) _______ has a narrow continental shelf and is the site of seismic and volcanic activity.

a. divergent plate boundary 

b. passive margin 

c. active margin 

d. oceanic rift 

44. A (An) _______ forms from accumulated sediments and could be called an underwater delta.

a. abyssal plain 

b. deep sea trench 

c. submarine canyon 

d. deep sea fan 

45. ______ have flat tops and were once above the sea.

a. seamounts 

b. guyots 

c. sea fans 

d. submarine canyons 

46. ______ extend from the continental rise to the oceanic ridge and compose a large portion of the ocean bottom.

a. deep sea trenches 

b. submarine canyons 

c. abyssal plains 

d. oceanic rifts 

47. The site of turbidity currents, a _______ is a former river valley now under sea level.

a. submarine canyon 

b. deep sea trench 

c. deep sea fan 

d. guyot 

48. The East Coast is an example of a (an) _______ , which has a wide continental shelf.

a. convergent plate boundary 

b. passive margin 

c. active margin 

d. oceanic rift 

49. There are more ______ on the Pacific Ocean bottom than the Atlantic. These underwater volcanoes can form islands if they break the surface.

a. seamounts 

b. guyots 

c. deep sea fans 

d. smokers 

50. ______ are found at converging plate boundaries and are the deepest spots in the ocean.

a. submarine canyons 

b. deep sea trenches 

c. abyssal plains 

d. deep sea fans 

51. A (An)_______ exists at the boundary between continent and ocean basin and is composed of transported sediments.

a. continental rise 

b. continental slope 

c. continental shelf 

d. oceanic ridge 

52. _______ are underwater hot springs that eject superheated water that support communities of interesting marine organisms.

a. seamounts 

b. guyots 

c. deep sea fans 

d. smokers 

53. The summit of the ______ features the oceanic rift zone and is composed of very young oceanic crust.

a. active margin 

b. continental rise 

c. continental shelf 

d. oceanic ridge 

54. ______ are due to the sun and moon's gravity cancelling each other out.

a. neap tides 

b. spring tides 

c. gyres 

d. tides 

55. The _______ travel(s) through deep ocean and at the surface in a worldwide pattern of water movement.

a. gyres 

b. sunamis 

c. wind-driven waves 

d. hermohaline conveyor belt 

56. ______ occur during new and full moons when the sun and moon's gravity pulls in the same direction.

a. neap tides 

b. spring tides 

c. El Niños 

d. tides 

57. _______ have a very long wavelength, travel very rapidly and are caused by a sudden displacement of a large volume of water.

a. storm surges 

b. tsunamis 

c. wind-driven waves 

d. gyres 

58. ______ change ocean temperatures across the Pacific and can change the weather patterns in North America.

a. El Niños 

b. tsunamis 

c. wind-driven waves 

d. storm surges 

59. ______ may move many miles inland and are more dangerous to shorelines than hurricane winds.

a. tsunamis 

b. spring tides 

c. wind-driven waves 

d. storm surges 

60. _____ are caused by friction of wind on water and exist in every ocean.

a. gyres 

b. tsunamis 

c. wind-driven waves 

d. storm surges