The Theory of Plate Tectonics 6.3

PLATE TECTONICS is the theory that the Earth's lithosphere is divided into tectonic plates plates that move around on top of the asthenosphere.

• TRUE

• FALSE

The theory of plate tectonics combine which two other theories?

• sea floor spreading and continental drift

• sea floor spreading and tidal theory

• continental drift and fossil theory

• continental theory and Big Bang theory

Tags

NGSS.HS-ESS1-5

The partly melted lower mantle is called

• magma

• the lithosphere

• the core

• the asthenosphere

A boundary where plates move away from each other is called

• divergent

• convergent

• transform

• shear boundary

The homework crew includes all of the following (check all that apply)...

• Emma :)

• Ava and Luke :)

• Abby :)

• Cole :)

• Amelie :)

Why is a divergent boundary also called a constructive boundary?

• magma flows up between the plates and forms a new crust

• old ocean floor is re-melted into magma

• animals in the ocean construct nests there

• Pacific Ocean becomes wider

An example of a transform/shear/sliding boundary is a

• volcano

• mid-ocean ridge

• deep-sea trench

• fault

What kind of plate boundary causes sea floor spreading like the one causing the Atlantic Ocean to widen?

• convergent boundary

• divergent boundary

• transform or shear boundary

What kind of plate boundary results to the formation of a fault line like the San Andreas fault here in California?

• divergent boundary

• transform or shear boundary

• convergent boundary

What kind of plate boundary results to the formation of a trench?

• convergent boundary

• divergent boundary

• transform or shear boundary