Earth Layers and Plate Tectonics

Subduction zones occur on Earth where dense oceanic crust dives under more buoyant continental crust. These boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. All of this is further evidence for the

• big bang theory.

• theory of plate tectonics.

• origin of the species.

• theory of natural selection.
  

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

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

• 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

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

What is the difference between the lithosphere and asthenosphere that makes up the mantle?

• The lithosphere is ismade of dense solid meal whle the asthenosphere is made of liquid molten metal

• The lithosphere is a mixture of gasses while the asthenosphere is made of solid rock

• The lithosphere is molten rock that moves while the asthenosphere is ridid and thin

• The lithosphere is made of solid rock while the asthenosphere is more flexible hot rock that moves.

What is the correct order (starting from the surface) of Earth's layers?

• crust, mantle, inner core, outer core

• mantle, outer core, inner core, crust

• inner core, outer core, mantle, crust

• crust, mantle, outer core, inner core

​ (a)   hot liquid rock below the surface of Earth

• magma

• mantle

• Mesosaurus

• mid-ocean ridge

Tags

ESS1.C

ESS2.A

ESS2.B

​ (a)   the layer of soft, solid rock underneath Earth's plates

• mantle

• Mesosaurus

• mid-ocean ridge

• model

Tags

ESS1.C

ESS2.A

ESS2.B

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle

What are the two types of crust?

• continental and oceanic

• ocean and basin

• lower and upper

• thick and thin

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

• the tectonic plates are moving towards each other

• the continental crust is melting

• the more dense oceanic crust is subducting

• an ocean ridge is forming

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3