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Eleventh Grade (Grade 11) Oceanography and Hydrology Questions

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Grade 11 Oceanography and Hydrology
A seamount is a(n)
  1. volcano with a summit that rises above sea level.
  2. ancient volcano with a summit that has been cut off by erosion.
  3. an elevated part of the ocean floor, possibly an underwater volcano.
  4. rock column located near the coast and formed by erosion.
Grade 11 Oceanography and Hydrology
Continental crust is
  1. denser and more rigid than oceanic crust.
  2. floating on top of the oceanic crust.
  3. thicker than oceanic crust.
  4. younger than the oceanic crust.
Grade 11 Oceanography and Hydrology
How do rip currents form?
  1. the sea is deep
  2. ocean water has no motion
  3. water runs along the shoreline
  4. sea water flows though gaps in the longshore bars
Grade 11 Oceanography and Hydrology
What are other names for hydrothermal vents?
  1. Magma centers
  2. Lava bars
  3. Geothermal vents or smokers
Grade 11 Oceanography and Hydrology
Seamounts
  1. are a special type of oceanic trench
  2. are volcanoes that form on the ocean floor
  3. form only in the Pacific ocean basin
  4. are submarine canyons found near Australia
Grade 11 Oceanography and Hydrology
The source of black sand beaches is                .
  1. sandstone
  2. limestone
  3. shell
  4. lava rock
Grade 11 Oceanography and Hydrology
What is the continental margin?
  1. underwater extension of the continent
  2. ancient volcano with a cut off summit by erosion
  3. volcano whose summit rises above sea level
Grade 11 Oceanography and Hydrology
Seamounts
  1. are a special type of oceanic trench.
  2. are volcanoes that form on the ocean floor.
  3. form only in the Pacific Ocean basin.
  4. are submarine canyons found near Australia.
Grade 11 Oceanography and Hydrology
The oceanic crust is composed mainly of what kind of stone?
  1. iron oxide
  2. limestone
  3. granite
  4. basalt
Grade 11 Oceanography and Hydrology
The oceanic crust is composed primarily of what kind of stone?
  1. iron oxide
  2. limestone
  3. granite
  4. basalt
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