Earth's Layers and Plate Tectonics

When two plates move away from each other what type of boundary occurs?

• transform boundary

• convergent boundary

• divergent boundary

Tags

NGSS.MS-ESS2-3

The outermost, thinnest, compositional layer of the Earth is called the

• crust

• mantle

• inner core

• outer core

When a continental plate collides with an oceanic plate, the oceanic plate sinks underneath because it is more dense and ____________________ occurs.

• sea-floor spreading

• mid-ocean ridge

• subduction

• collision

Select all that are true about the inner core.

• It is made of iron and nickel

• It is solid

• It is liquid

• It is at the center of Earth

Which is true about oceanic crust?

• It is thicker than continental crust

• It is more dense than continental crust

• It is less dense than continental crust

• It makes up the mantle

Select the three mechanisms that drive tectonic plate motion.

• mantle convection

• slab pull

• ridge push

• continental drift

Tags

NGSS.MS-ESS2-3

The crust and the rigid upper part of the mantle make up which physical layer?

• lithosphere

• asthenosphere

• mesosphere

• inner core

What process is being described "molten rock from inside Earth rises through the cracks in the ridges, cools, and forms new oceanic crust"

• sea-floor spreading

• mantle convection

• subduction

• slab pull

Which description matches the inner core?

• Solid sphere of iron and nickel

• Molten iron and nickel

• Liquid sphere of iron and nickel

• Circle of iron and nickel

When two continental plates collide at a convergent boundary, what forms?

• Mountains

• Volcano

• Trench

• Rift valley

Tags

NGSS.MS-ESS2-2