What is siliceous ooze mostly composed of?
mineral grains that were eroded from continental rocks and transported to the ocean
minerals that crystallize quickly from ocean water through various chemical reactions
the shells of diatoms (single-celled algae) and radiolarians (single-celled animals)
13. Calcium carbonate is a type of hydrogenous sediment that can be buried and hardened into _____.
limestone
siliceous ooze
calcareous ooze
14. How much of the world’s oil production currently comes from offshore regions?
75 percent
50 percent
10 percent
30 percent
15.
Seamounts are _____.
submarine canyons found near Australia
only found in the Pacific Ocean
volcanoes that form on the ocean floor
a special type of oceanic trench
16. Terrigenous sediment consists primarily of mineral grains eroded from _____.
undersea minerals
mid-ocean ridges
marine animal shells
continental rocks
17. Which part of the ocean is deepest?
rifts
trenches
seamounts
ridges
18. Multibeam sonar technology uses _____.
more than one sound source and listening device
multiple beams of bouncing microwaves
more than one light source and viewing device
multiple beams of ocean-floor sediment
19. Important mineral deposits, including large reservoirs of oil and natural gas, are associated with _____.
mid-ocean ridges
continental shelves
rift zones
ocean trenches
20. Which ocean has the greatest average depth?
Pacific
Indian
Atlantic
Arctic
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jeifunk|Points 8360|
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Asked 1/10/2013 8:27:39 AM
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