Sea Floor Spreading

Sea-floor spreading begins at the

• Deep ocean trench

• Mid-ocean ridge

• Continent's edge

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

New crust is always formed at the...

• mid-ocean ridge

• deep-ocean trench

• asthenosphere

What is the process happening at R?

• Deep ocean trench

• mid ocean ridge

• subduction

• sea floor spreading

Tags

NGSS.MS-ESS2-3

At the Mid-Ocean Ridge and active volcanoes you can find:

• fault lines

• earthquakes

• older crust

• newest crust

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Ferromagnetic molecules make up little shavings of iron that are in rock and align themselves to magnetic north when the rock is molten and liquid. Where do we find this?

• Past the subduction zones where land and ocean plates collide

• On either side of mid-ocean ridges

• On the land under the Antarctic cap

• In the layers of rock surrounding the Grand Canyon

• In the convection cells of the mantle

Tags

NGSS.HS-ESS1-5

The diagram shows the magnetic polarity (they look like zebra stripes) of the seafloor at the Mid-Ocean Ridge. Which of the following statements is true about the magnetic polarity pattern of the ridge?

• Stripes of normal polarity and reversed polarity DO NOT alternate across the ocean bottom.

• Stripes form mirror images (are symmetrical) on either side of the mid-ocean ridges

• Stripes form different images on either side of the mid-ocean ridges

• there is not a pattern that is created

Tags

NGSS.MS-ESS2-2

The oceanic crust is pushed aside on both sides of the 

• Continent's edge

• Deep-ocean trench

• Mid-ocean ridge

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What words describe M? choose all

• deep ocean trench

• mid ocean ridge

• sea floor spreading

• subduction

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What feature is at C?

• Deep ocean trench

• Mid ocean ridge

• sea floor spreading

• subduction

What grows at the divergent boundary? 

• San Andreas Fault

• Mid Ocean Ridge

• Land ridge

• Pacific Ocean