Why do tectonic plates move?
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Transcript of Why do tectonic plates move?
Why do tectonic plates move?
Moving PlatesLithosphereTectonic plates make
up a part of Earth called the lithosphere.
Litho- means rock and sphere- means ball.
The lithosphere is the solid, rocky layer of Earth.
Lithosphere includes the crust, with oceans and continents, and the rigid upper mantle.
The layer of Earth below the lithosphere is the asthenosphere.
It is not rigid and moves like silly puttyWhen the asthenosphere heats up from
moving around is flows like a thick liquid. A sharp, quick force will snap it like a solid.
Moving PlatesAsthenosphere
Temperature increases steadily as you move deeper into the asthenosphere.
Deeper in the asthenosphere the mantle is partly melted and moves like syrup.
The heated parts rise and begin to cool near the top.
As the cooler parts get colder they begin to sink and the cycle starts all over again.
Convection Current Cycle
Boiling pasta
What example did we see in our everyday life that uses
convection current?
Pasta Earth
How do plates interact?
Type of plate:Colliding plates- plate
come together
Separating plates- plates move away
Sliding plates- plates move past each other
Type of boundary:Convergent
boundaries
Divergent boundaries
Transform-fault boundaries
Colliding Plates
Separating plates
Sliding Plates
Separating plates
Sea-floor spreading is an example of what kind of
plate interaction?
Mountains
What kind of features occur along colliding boundaries?