Oceans Zones

What is the term for the part of the ocean where sunlight does not reach?

• Photic zone

• Aphotic zone

• Intertidal zone

• Neritic zone

Which ocean zone requires sea life to be highly adaptable to varying amounts of water due to tides?

• Photic zone

• Aphotic zone

• Intertidal zone

• Pelagic zone

Which ocean zone is characterized by abundant sunlight and a high concentration of autotrophs like grasses, seaweed, and photosynthetic bacteria?

• Pelagic zone

• Benthic zone

• Neritic zone

• Abyssal zone

What best describes the Benthic zone of the ocean?

• Top of the photic zone with abundant sunlight.

• Middle zone not near the coast or sea floor.

• Floor of the ocean with no light, scavengers, and very cold temperatures.

• Area affected by tides, requiring adaptable life.

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What types of tools have scientists recently started using to explore the deep ocean?

• Ships and floats

• Human-occupied submersibles, remote-controlled vehicles, and autonomous robots

• Drifters and water sample collectors

• Traditional nets and cameras

When was a new community of organisms discovered on the deep ocean floor by scientists diving in Alvin to the Galápagos Rift?

• 1877

• 1997

• 1977

• 2007

What term is used to describe organisms that thrive in extreme conditions like those found in the deep ocean?

• Hydrophiles

• Thermophiles

• Extremophiles

• Chemophiles

What is the primary energy source for lush communities of life found at hydrothermal vents and cold seeps?

• Sunlight

• Chemical-rich fluids leaking from the seafloor

• Heat from volcanic activity

• Organic matter falling from the surface