Vocabulary
3
Types:
1. Oceanic – Oceanic
 2. Continental – Continental
 3. Continental – Oceanic

Definition

The boundary formed by the
collision of 2 lithospheric plates.
Definition

The boundary between 2 tectonic
plates that are moving away from
each other.
Effect

Sea Floor Spreading at a MidOcean Ridge
Definition

The boundary between 2 tectonic
plates that are sliding past each
other horizontally.
Effect

Earthquakes!!!!!
Types
1. Reverse Fault
 2. Strike – Slip Fault
 3. Normal Fault

Definition

A break in a body of rock along
which one body of rock slides
relative to another.
Definition

Pieces of the lithosphere that
move around on top of the
asthenosphere.
Definition

The solid outer layer of the earth
that consists of the crust and the
rigid upper part of the mantle.
Divided
into tectonic plates.
Definition

The body of molten rock that
feeds a volcano
Definition

It
The soft, plastic layer of the
mantle on which the tectonic
plates move because of heat that
causes convection currents.
causes the tectonic plates
to move.
Definition

The shaking of the ground
Measured
Forms
by seismic waves
at transform
boundaries
Definition

A vent or fissure in the earth’s
surface through which magma and
volcanic gases are expelled.
Forms
at Convergent
boundaries
Definition

The theory that explains how
large pieces of the earth’s
outermost layer called tectonic
plates move on the asthenosphere
and change shape.
Definition


The tectonically active volcanoes
that formed to surround the
Pacific ocean.
Indonesian Islands, Phillipino
Islands, Japan
Definition
The hypothesis that states
that the continents once
formed a single landmass
called Pangaea, broke apart,
and drifted to their present
locations.

Who

came up with it?
Alfred Wegener
Definition

The process by which new oceanic
lithosphere forms as magma rises
toward the surface and solidifies.
Occurs
at divergent
boundaries
Definition

The lithosphere sinks under
another plate. Old oceanic crust
gets pushed down into the
asthenosphere where it is remelted and recycled.
Causes
volcanoes to form.
Occurs at convergent
boundaries.