Plate Tectonics

PLATE TECTONICS A

1

What are the large sections of hard, solid rock that make up Earth's outer layer called?

PLATES

1

What layer of Earth is made of mostly solid iron?

Inner Core

1

What layer is broken up to create plates?

Lithosphere (crust and upper mantle)

1

What is the cause of earthquakes?

Movement of a tectonic plate.

1

Where is the oldest crust located in a oceanic divergent boundary?

Far away from the mid ocean ridge

PLATE TECTONICS B

1

The crust is divided into what 2 types?

Continental crust and oceanic crust

1

What do you call the place where two tectonic plates meet?

Plate Boundary

1

What is a boundary where two plates slide along each other?

Transform

1

What term describes the movement in a gas or liquid in which the warmer parts move up and the cooler parts move down?

CONVECTION currents

1

What are examples of the geologic activities found at plate boundaries?

earthquakes, active volcanoes, sea floor spreading, subduction

PLATE TECTONICS C

1

How did the Mesosaurous fossils separate? 

the divergent boundary in the Atlantic ocean pulled it apart. 

1

What happens when a continental plate converges with a continental plate?

Formation of mountains and mountain ranges

1

What is the process when oceanic crust sinks below continental crust?

Subduction

1

What hardens to form new rock at mid-ocean ridges?

Magma

1

What is the low land area landform that occurs at a divergent boundary?

Rift Valley

PLATE TECTONICS D

1

What feature can you see at a transform boundary?

Offset streams

Faults

1

What type of boundary is made when two tectonic plates collide?

Convergent

1

Why is the asthenosphere able to fuel plate movement?

Because it is soft solid that flows like putty.

1

Give the 2 geologic features when two oceanic crust collide

volcanic arc island and trench

1

What type of tectonic plate boundary can produce a subduction zone?

Convergent Boundary

PLATE TECTONICS E

1

What is the name of the super continent that proves plate motion is real?

Pangaea

1

What lanform is created when two oceanic plates diverged?

Mid-Ocean Ridge

1

What process occurs at a mid ocean ridge?

Sea Floor Spreading

Creation of New Crust

Diverging Plate Movement

1

What is the term that describes the oldest rock layer being on the bottom and the newest being on the top? 

The Law of Superposition

1

Why do plates move?

Convection currents in the asthenosphere.