Seafloor Spreading Subduction

Which features form the longest mountain ranges on Earth?

• mid-ocean ridges

• deep-ocean trenches

• Rocky Mountains

• Andes Mountains

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

Which process adds more crust to the ocean floor?

• suction

• sea-floor spreading

• subduction

• magnetic stripe

Where does subduction occur?

• along the middle of some ocean floors

• down the middle of mountain ranges

• on continents

• at deep-ocean trenches

Tags

NGSS.MS-ESS2-3

Which process or processes change the size and shape of the oceans?

• subduction only

• sea-floor spreading only

• both subduction and sea-floor spreading

• both drill for samples and subduction

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

What device do scientists use to map the ocean floor?

• boat

• seismographs

• sonar

• solar

Tags

NGSS.MS-PS4-2

A deep-ocean trench is an underwater what?

• canyon

• waterfall

• mountain

• rift valley

Tags

NGSS.MS-ESS2-3

Molten material erupts inside the central valley of mid-ocean ridges.

• true

• false-outside

Tags

NGSS.MS-ESS2-3

The farther from a mid-ocean ridge a rick sample is taken, the younger the rock is.

• true

• false; older

Tags

NGSS.MS-ESS2-3

Sea-floor spreading occurs at mid-ocean ridges.

• true

• false; deep-ocean trenches

Tags

NGSS.MS-ESS2-3

The pattern of magnetic stripes in rocks on either side of a mid-ocean ridge is the same.

• true

• false; different

Tags

NGSS.MS-ESS2-3