Which term denotes the broad, flat, sediment-covered ocean floor located far from continents?

Which term denotes the broad, flat, sediment-covered ocean floor located far from continents?

• A. Abyssal Plain
• B. Abyssal Hill
• C. Continental Margin
• D. Fracture Zone

Answer: (A)

This item is testing your knowledge of the deep-ocean floor features. The broad, flat, sediment-covered seafloor located far from continents is the abyssal plain. It sits in the deep ocean basins beyond the continental margins and is kept flat by the gradual accumulation of fine sediments—clays and silts—from rivers and the ocean. This accumulation smooths out irregularities over long timescales, creating one of the flattest, most expansive features on Earth, typically at depths of several thousand meters. Abyssal hills are small raised features on the plain, not the broad flat area. The continental margin refers to the zone where land meets the ocean, including the continental shelf, slope, and rise, rather than the deep basin floor. Fracture zones are transform faults that offset mid-ocean ridges, not the flat sediment blanket far from land.

This item is testing your knowledge of the deep-ocean floor features. The broad, flat, sediment-covered seafloor located far from continents is the abyssal plain. It sits in the deep ocean basins beyond the continental margins and is kept flat by the gradual accumulation of fine sediments—clays and silts—from rivers and the ocean. This accumulation smooths out irregularities over long timescales, creating one of the flattest, most expansive features on Earth, typically at depths of several thousand meters.

Abyssal hills are small raised features on the plain, not the broad flat area. The continental margin refers to the zone where land meets the ocean, including the continental shelf, slope, and rise, rather than the deep basin floor. Fracture zones are transform faults that offset mid-ocean ridges, not the flat sediment blanket far from land.