science vocab week 23

undersea mountain chain where new ocean floor is created

 

• mid-ocean ridge

• fault

• subduction

• rift valley

process where molten material adds new oceanic crust to the ocean floor       

• plate

• deep ocean trench

• sea-floor spreading

• divergent boundary

deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle

• subduction

• deep ocean trench

• convergent boundary

• transform boundary

process where oceanic crust sinks back into the mantle

• plate

• subduction

• divergent boundary

• fault

section of the lithosphere that slowly moves over the mantle, carrying pieces of continent and ocean crust

• mid-ocean ridge

• rift valley

• fault

• plate

plate boundary where two plates move away from each other

• divergent boundary

• sea-floor spreading

• convergent boundary

• rift valley

plate boundary where two plates move toward each other

• plate

• divergent boundary

• convergent boundary

• subduction

plate boundary where plates move past each other in opposite directions

 

• mid-ocean ridge

• divergent boundary

• convergent boundary

• transform boundary

a break in Earth’s crust along which rocks move

• fault

• riftvalley

• plate

• subduction

 deep valley that forms where two continental plates move apart

• rift valley

• deep ocean trench

• divergent boundary

• plate