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Ocean Zones (Grade 8)

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Ocean Zones

The pelagic zones of the ocean are determined mainly by distances from shorelines.
  1. True
  2. False
The epipelagic zone, or the sunlight zone, extends from the surface of the ocean to about 200 meters.
  1. True
  2. False
The depths from about 3,300 - 13,100 feet (1,000-4,000 meters) comprise the bathypelagic zone. Due to its constant darkness, this zone is also called the midnight zone. The only light at this depth (and lower) comes from the bioluminescence of the animals themselves.
  1. True
  2. False
Below the epipelagic zone is the mesopelagic zone, extending from about 660 feet (200 meters) to 3,300 feet (1,000 meters). The mesopelagic zone is sometimes referred to as the twilight zone as sunlight this deep is very faint. Temperature changes the greatest in this zone as this is the zone with contains the thermocline.
  1. True
  2. False
The table shows the ocean zones in the wrong order.
Ocean Zones

Which sequence shows the ocean zones in the correct order from surface to bottom?
  1. D, E, B, A, C
  2. C, A, B, E, D
  3. D, B, E, A, C
  4. C, A, E, B, D
Which statement best describes the amount of sunlight that reaches the abyssopelagic zone?
  1. Sunlight does not reach the zone.
  2. Sunlight reaches only the top of the zone.
  3. Sunlight reaches throughout the entire zone.
The Mariana Trench is the deepest known part of any of Earth's oceans. Its bottom reaches almost 11,000 meters, or over 6 miles, below the surface of the ocean. In which ocean zone is the Mariana Trench located?
  1. mesopelagic
  2. hadalpelagic
  3. bathypelagic
  4. abyssopelagic
Which pelagic zone contains the greatest volume of ocean water?
  1. epipelagic zone
  2. hadalpelagic zone
  3. bathypelagic zone
  4. abyssopelagic zone
Which ocean zones would you most likely find giant tube worms and phytoplankton?
  1. Both giant tube worms and phytoplankton live in the epipelagic zone.
  2. Both giant tube worms and phytoplankton live in the abyssopelagic zone.
  3. Giant tube worms live in the abyssopelagic zone and phytoplankton live in the epipelagic zone.
  4. Phytoplankton live in the abyssopelagic zone and giant tube worms live in the epipelagic zone.
Which ocean zone would be most impacted by the formation of a hurricane?
  1. bathypelagic
  2. epipelagic
  3. abyssopelagic
  4. hadalpelagic
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