Ocean Zones Quiz

What is the maximum depth of the Epipelagic Zone in open ocean water?

• 50 meters

• 100 meters

• 200 meters

• 500 meters

Which organisms are primarily responsible for photosynthesis in the Epipelagic Zone?

• Algae and kelp

• Phytoplankton

• Coral reefs

• Seagrass meadows

Why is the Epipelagic Zone also known as the 'Sunlight Zone'?

• It is the deepest part of the ocean

• It is where sunlight can penetrate for photosynthesis

• It is the coldest part of the ocean

• It is where most marine animals live

What is the Epipelagic Zone known for in terms of marine life?

• It has the least marine life.

• It is where 90% of marine life is found.

• It has no marine life.

• It is only home to large marine animals.

At what temperature can seawater be found in the Epipelagic Zone near the poles?

• 0 degrees Celsius

• -2 degrees Celsius

• 5 degrees Celsius

• 10 degrees Celsius

What is the freezing point of salt water compared to fresh water?

• Salt water freezes at 0 degrees Celsius.

• Salt water has a lower freezing point than fresh water.

• Salt water has a higher freezing point than fresh water.

• Salt water and fresh water freeze at the same temperature.

How does atmospheric pressure change with ocean depth?

• It decreases by one atmosphere every 10 meters.

• It remains constant regardless of depth.

• It increases by one atmosphere every 10 meters.

• It increases by two atmospheres every 10 meters.

What is the Mesopelagic Zone also known as?

• The Sunlight Zone

• The Twilight Zone

• The Midnight Zone

• The Abyssal Zone

What is a thermocline?

• A layer where water temperature increases rapidly.

• A layer where water temperature drops quickly.

• A layer where water temperature remains constant.

• A layer where water temperature is the warmest.

What is the main purpose of a bathymetric map?

• To show the height of landforms

• To show the depth of landforms

• To display weather patterns

• To map ocean currents