2024.04.11_ Science; Layers of the Ocean Review; EDMS

Who mentioned we know less about the ocean's bottom than Mars or the Moon?

• A geologist

• Dr. Jean Feldman

• An astronaut

• A marine biologist

What process contributes to the ocean's salinity from the ocean floor?

• Condensation

• Evaporation

• Seafloor spreading

• Photosynthesis

What keeps the ocean salty?

• Animal life

• Freshwater input

• Salt mines

• Evaporation leaving salt behind

Which zone is known for its bioluminescent creatures?

• Twilight Zone

• Midnight Zone

• Sunlight Zone

• Abyssal Zone

Which zone extends to 1,000 meters below the surface?

• Abyssal Zone

• Twilight Zone

• Sunlight Zone

• Midnight Zone

What is the primary challenge in exploring the Hadal Zone?

• Lack of light

• High pressure

• Scarcity of life

• Cold temperatures

What is the deepest part of the ocean called?

• Oceanic Trench

• Mariana Trench

• Hadal Zone

• Abyssal Plain

Why is there little oxygen in the Abyssal Zone?

• Because of pollution

• Due to high temperatures

• Because of the lack of photosynthesis

• Due to the abundance of fish

What zone is referred to as the 'desert of the ocean'?

• Hadal Zone

• Twilight Zone

• Midnight Zone

• Abyssal Zone

What makes deep ocean exploration more challenging than exploring the surface of planets?

• The distance

• The cold

• The pressure

• The darkness