Forcesof changeonlineversion1
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Transcript of Forcesof changeonlineversion1
FORCES OF CHANGE3.5 understand that common physical, biological, and cultural characteristics create regions. 3.6 understand how physical processes shape Earth’s natural landscapes and affect environments. 3.7 understand how physical systems and environments affect human systems. 3.8 understand how human systems modify the physical environment.
THE INTERIOR OF THE EARTH
Crust
Mantle
Outer Core
Inner Core
Solid, rocky
Jello-like, magma
Liquid, Very Hot
Solid, iron and nickel, and the hottest
THE CRUST IS BROKEN UP INTO TECTONIC PLATES
THESE TECTONIC PLATES HAVE NAMES
CONTINENTAL DRIFT THEORY STATES THAT THESE PLATES MOVE!
The continents were once a supercontinent called Pangaea
BUT WHY DO THESE PLATES MOVE!CONVECTION IN THE MANTLE!
Convection
Warm magma rises and cools
Cooler magma sinks and heats
PLATES MOVE IN 3 GENERAL WAYS
Away from each other
Towards each other
Rubbing against each other
THESE PLATE MOVEMENTS CREATE A VARIETY OF LANDFORMS!
Volcanoes
Islands
Mountains
ONE REGION HAS MORE PLATE ACTIVITY THEN ANY OTHER PLACE ON EARTH!
PLATE MOVEMENTS CAN CAUSE A VARIETY OF PROBLEMS FOR US
EARTHQUAKES ARE SUDDEN VIOLENT MOVEMENTS
PLATE MOVEMENTS CAN CAUSE A VARIETY OF PROBLEMS FOR US
VOLCANOES ARE HOLES IN EARTH’S CRUST WHERE MAGMA ERUPTS OR FLOWS!
PLATE MOVEMENTS CAN CAUSE A VARIETY OF PROBLEMS FOR US
TSUNAMIS ARE HUGE TIDAL WAVES CAUSED BY UNDERWATER EARTHQUAKES