2024.04.09_ Science Layers of the Ocean; Part 1; EDMS

Who stated we have better maps of Mars and the Moon than the ocean's bottom?

• An astronaut

• A marine biologist

• A geologist

• Dr. Jean Feldman

What makes exploring the ocean challenging?

• Both pressure and darkness

• The darkness

• The cold

• The pressure

Why are Earth's oceans important?

• They support human activities

• They provide a habitat for marine life

• All of the above

• They regulate climate

What process contributes to the ocean's saltiness by leaving salt behind?

• The water cycle

• Photosynthesis

• Seafloor spreading

• Underwater volcanic eruptions

What is another source of salt in the ocean besides erosion and deposition?

• Rainwater

• River outflow

• Seafloor spreading

• Icebergs melting

Why does the ocean remain salty?

• Saltwater fish

• Because of salt mines

• Freshwater evaporation

• Due to fish

What role does seafloor spreading play in the ocean's saltiness?

• It purifies water

• It has no effect

• It adds minerals and salts

• It reduces salt

What is the name of the ocean zone that extends to 200 meters below the surface?

• The Midnight Zone

• The Sunlight Zone

• The Abyssal Zone

• The Twilight Zone

What life forms are found in the Sunlight Zone?

• Bioluminescent creatures

• Scavengers

• Photosynthesizing plants and organisms

• Deep-sea fish

Which zone is known for creatures that use bioluminescence?

• The Hadal Zone

• The Twilight Zone

• The Abyssal Zone

• The Sunlight Zone