Question

4 multiple choice 1 point

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

Explanation:

Analyze the question prompt

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

Evaluate the options

• mid-ocean ridge: This is an underwater mountain range formed by plate tectonics. Upwelling magma here cools to form new oceanic crust.
• continental rise: This is a gentle slope at the base of the continental slope, formed by sediment accumulation.
• trench: This is a deep depression formed at subduction zones where old oceanic crust is destroyed.
• seamount: These are isolated underwater volcanic mountains. While volcanic, they are not the primary zones where new ocean floor is systematically created.

Connect to ocean topography

Using our understanding of Ocean Floor Topography, we know that tectonic plates pull apart at divergent boundaries. This process, known as seafloor spreading, occurs at mid-ocean ridges where magma rises from the mantle to create new crust.

Answer:

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