Plates Tectonics

Observe this diagram of a plate boundary. One statement BEST describes what is happening:

• the oceanic crust is melting.

• the denser ceanic crust is subducting under the less dense oceanic crust

• volcanic islands are forming.

• the tectonic plates are moving away from each other.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What geological forces might be responsible for this range of mountains?

• diverging tectonic plates

• erosion of the land by the ocean

• converging tectonic plates

• deposition of sediments by the ocean
  

Tags

NGSS.MS-ESS2-2

The Earth’s surface is not a solid surface but is divided into

• several oceanic plates.

• continental and crustal plates.
  

• seven continental plates.

• continental and oceanic plates.
  

Where would sea floor spreading most likely occur?

• At convergent boundaries (oceanic vs. oceanic)

• At convergent boundaries (oceanic vs. continental)

• At divergent plate boundaries (oceanic vs. oceanic)

• At transform plate boundaries

Tags

NGSS.MS-ESS2-3

Which of the following land formation occurs at a divergent continental/continental boundary?

• mid-ocean ridge

• deep ocean trench

• Pacific hot spot

• rift valley

Earth's plates are....

• constantly moving and changing the face of the Earth.

• never moving, but are fixed in place.

• hardly ever moving, but move fast when they do.

• moving, but it has little effect on Earth's surface.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What type of boundary creates a new seafloor?

• convergent continental to continental

• convergent ocean to continental

• convergent ocean to ocean

• divergent 

A subduction zone is formed....

• when one tectonic plate sinks below another.

• at all plate boundaries.

• when plates diverge.

• at transform boundaries.

Tags

NGSS.MS-ESS2-3

How is it possible for new crust to be formed without increasing the surface area of the Earth?

• Crust is destroyed at the same time it is created.

• New crust is underwater where it sinks.

• New crust breaks more easily than old crust.

Tags

NGSS.MS-ESS2-1

What is happening at point B?

• subduction

• a divergent boundary

• convection

• an earthquake

Tags

NGSS.MS-ESS2-2