Question

the area in an ocean basin where new ocean floor is formed is a -
seamount
mid-ocean ridge
continental rise
trench

Explanation:

Identify the core geological process

The question asks for the area in an ocean basin where new ocean floor is formed.

Evaluate the given options

• seamount: An isolated underwater volcanic mountain that does not create new oceanic crust on a basin-wide scale.
• mid-ocean ridge: An underwater mountain range formed by plate tectonics where convection currents rise in the mantle beneath the oceanic crust and create magma, forming new oceanic crust as the plates pull apart.
• continental rise: A wide, gentle incline from the deep ocean floor to the continental slope, consisting mainly of silts and sediments.
• trench: A deep depression in the ocean floor where old oceanic crust is subducted and destroyed, not formed.

Select the correct feature

The mid-ocean ridge is the site of seafloor spreading where new oceanic lithosphere is continuously created.

Answer:

• seamount
• mid-ocean ridge (Correct answer)
• continental rise
• trench