ES 9.2 Formative

A surface feature in the seafloor produced by the descending plate during subduction.

• deep-ocean trench

• mid-ocean ridge

• rift valley

• seafloor spreading

Tags

NGSS.MS-ESS2-3

A continuous elevated zone on the floor of all major ocean basins. This system forms the longest feature on Earth's surface.

• deep-ocean trench

• mid-ocean ridge

• rift valley

• subduction

A deep faulted structure found along divergent plate boundaries.

• deep-ocean trench

• mid-ocean ridge

• rift valley

• sonar

A system that used sound waves to calculate the distance to an object.

Process by which new ocean floor forms along mid-ocean ridges and slowly moves outward across ocean basins.

• sonar

• sea-floor spreading

• subduction

• paleomagnetism

Tags

NGSS.MS-ESS2-1

The process by which ocean floor returns to the mantle as it sinks beneath a deep ocean trench.

Tags

NGSS.MS-ESS2-3

The study of changes in Earth's magnetic field, as shown by patterns of magnetism in rocks that have formed over time.

Evidence for sea-floor spreading include magnetic strips in ocean-floor rock, measurements of the ages of ocean floor rocks, and _____ patterns.