Sea-Floor Spreading REVIEW

Sea-floor spreading begins at a

• convergent boundary

• divergent boundary

• transform boundary

New sea floor is always formed at the...

• mid-ocean ridge

• deep-ocean trench

• asthenosphere

Which is used to map the ocean floor?

• GIS

• Rocks

• GPS

• Sonar

What process in the mantle causes the plates to move?

• conduction

• convection currents

• radiation

Tags

NGSS.MS-ESS2-3

What is the Mid ocean ridge?

• a continental mountain range

• a valley system in the middle of the ocean

• an underwater volcanic mountain range

What feature is at C?

• Deep sea trench

• Mid ocean ridge

• sea floor spreading

• subduction

Tags

NGSS.MS-ESS2-3

Massive pieces of land that are part of the Earth's crust and upper mantle

• Tectonic plates
• Trenches
• Divergent boundary
• Continental shelves

Tags

NGSS.MS-ESS2-3

The OLDEST seafloor is located? 

• Closest to the mid-ocean ridge
• Farthest from the mid-ocean ridge

Tags

NGSS.HS-ESS1-5

Younger sea floor crust is located...

• farther from the mid-ocean ridges
• at the mid ocean ridges
• at the subduction zone
• near the continents

Tags

NGSS.MS-ESS2-1

Another name for the crust is the ____________.

• asthenosphere

• mantle

• lithosphere

• hydrosphere