QUICK REVIEW… Layers of the Earth Crust (2 types) Mantle Outer Core Inner Core Earth’s crust and...

QUICK REVIEW… Layers of the

EarthCrust (2 types)MantleOuter CoreInner Core

Earth’s crust and the very top of the mantle form the lithosphere

Lithosphere sits on top of the asthenosphere

WHAT DO WE MEAN WHEN WE SAY

“EARTH’S HISTORY?”Study Jams Slide Show: How did all of these

things happen?

http://studyjams.scholastic.com/studyjams/jams/science/rocks-minerals-landforms/landforms.htm

HOW???

LAW OF UNIFORMITARIANISMLaw of

Uniformitarianism- the idea that Earth is an always changing place

The same forces of change are at work today that were at work in the past.

Some changes are gradual; some changes are fast.

T-CHART: SLOW CHANGES VS.

FAST CHANGES

SOME THINGS HAPPEN SLOWLY, WHILE OTHERS HAPPEN QUICKLY, BUT WHAT THEY BOTH HAVE IN COMMON IS THAT IT IS MOVEMENT THAT CAUSES THESE CHANGES…BUT MOVEMENT OF

WHAT????

TECTONIC PLATES The Lithosphere broken into many large and small

slabs of rock called tectonic plates and where two plates meet, a lot of changes can occur.

They move because of convection currents.

The hot, soft rock in the mantle rises…then it cools, and sinks.

TECTONIC PLATES

How do the

tectonic

plates move?

1. Divergent2. Convergent 3. Transform

TECTONIC PLATES

There are 3 types of

plate boundaries

Please TURN to back of paper

Key word: Divide

DIVERGENT

What occurs at this boundary?

New Crust Forms

Mid-ocean ridges

Rift valleysEarthquakes

Volcanoes

DIVERGENT

Key word: Collide

3 types of convergent:Continental-continental

Oceanic-oceanicOceanic- continental

CONVERGENT

CONVERGENT: CONTINENTAL-CONTINENTAL

High mountains

Earthquakes

CONVERGENT: CONTINENTAL-CONTINENTAL

CONVERGENT: OCEANIC-OCEANIC

Deep-ocean trenches

Volcanic islands

Earthquakes

CONVERGENT: OCEANIC-OCEANIC

CONVERGENT: OCEANIC- CONTINENTAL

Deep-ocean trenches

Coastal mountains

Earthquakes

CONVERGENT: OCEANIC- CONTINENTAL

Key word: Slide

TRANSFORM

FaultsEarthquakes

TRANSFORM

When one plate sinks under another plate

CAN ONLY HAPPEN…Continental & oceanic

plate collide = oceanic plate ALWAYS sinks because it is more DENSE.

Oceanic & oceanic plate collide = the older more dense plate sinks!

BUT WHAT ABOUT SUBDUCTION?

What is Subduction

http://www.sepuplhs.org/middle/iaes/students/simulations/SEPUP_Plate_simulation.swf

PLATE MOTION SIMULATION

HOMEWORKFind a real world example for

each type of boundary to fill in the last column of the chart…you may also include a printed picture

Vocabulary Set 1 – Day 1

QUICK REVIEW… Layers of the Earth Crust (2 types) Mantle Outer Core Inner Core Earth’s crust and...

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