Ocean Zones

What is the role of the Abyssal Zone in the ocean ecosystem?

• It is a region with no light that supports only a few species.

• It hosts unique organisms that contribute to nutrient cycling and energy flow in the deep sea.

• It is the shallowest part of the ocean where most marine life is found.

• It serves as a barrier to protect coastal areas from storms.

What is the pressure like in the Abyssal Zone?

• The pressure is low, around 1,000 pounds per square inch.

• The pressure is moderate, typically between 5,000 to 7,000 pounds per square inch.

• The pressure is extremely high, often exceeding 11,000 pounds per square inch.

• The pressure is variable and depends on the time of year.

What is the relationship between ocean zones and marine biodiversity?

• Different ocean zones support varying levels of biodiversity, with the Sunlight Zone having the highest diversity due to abundant light and nutrients.

• All ocean zones have the same level of biodiversity regardless of light and nutrients.

• Marine biodiversity is only found in the deepest ocean zones.

• The Sunlight Zone has the lowest biodiversity because of too much light.

What is the Sunlight Zone?

• The Sunlight Zone is the uppermost layer of the ocean, extending from the surface to about 200 meters below sea level, where most ocean life exists due to sunlight.

• The Sunlight Zone is a region of the ocean that is completely dark and devoid of life.

• The Sunlight Zone is the deepest part of the ocean, where pressure is extremely high and no light penetrates.

• The Sunlight Zone is a layer of the atmosphere that protects the Earth from harmful solar radiation.

What is the Midnight Zone?

• The part of the ocean that lies between 1,000 and 4,000 meters below sea level, completely dark and with very high pressure.

• A region of the ocean that is well-lit and supports a variety of marine life.

• The surface layer of the ocean where sunlight penetrates and photosynthesis occurs.

• An area of the ocean that is known for its warm temperatures and abundant coral reefs.

What is bioluminescence?

• The ability of certain organisms to produce light through chemical reactions in their bodies.

• A process by which plants convert sunlight into energy.

• The phenomenon of animals changing color to blend in with their environment.

• A method of communication used by birds during mating season.

What adaptations do organisms in the Midnight Zone have?

• Bioluminescence, large eyes, and slow metabolism

• Ability to photosynthesize

• Thick fur and warm blood

• Ability to migrate to warmer waters

How do scientists study ocean zones?

• Using satellites to monitor surface temperatures

• Employing submersibles, remotely operated vehicles (ROVs), and sonar mapping

• Conducting surface-level observations only

• Relying solely on theoretical models without practical exploration

What is the significance of the ocean's layers?

• They create distinct habitats that support different types of marine life and ecological processes.

• They are primarily composed of saltwater and affect global weather patterns.

• They serve as barriers to prevent pollution from entering the ocean.

• They are important for human recreation and tourism.

How does temperature change with depth in the ocean?

• Temperature increases with depth due to geothermal heat.

• Temperature remains constant at all depths in the ocean.

• Temperature generally decreases with depth in the ocean.

• Temperature fluctuates randomly with depth.