OUR CHANGING EARTH. LITHOSPHERIC PLATES EVOLUTION OF LANDFORMS.

OUR CHANGING EARTH

LITHOSPHERIC PLATES

EVOLUTION OF LANDFORMS

TECTONIC FORCESEndogenic forces The forces that act in the interior of the earth.

Exogenic forces - The forces that act on the surface of the earth .

CAUSESEndogenic forces produce slow and sudden movements .

Sudden changes cause EARTHQUAKES & VOLCANOES

VOLCANOA VENT OR OPENING IN THE EARTHS CRUST THROUGH WHICH MOLTEN MATERIALS ERUPTS SUDDENLY.

EARTHQUAKEWhen the Lithospheric plates move ,the surface of the earth vibrates.These vibrations are called EARTHQUAKES.

Earthquake hits Bhuj26th January 2001

EARTHQUAKE PREPAREDNESS

SEISMOGRAPH

WEATHERING & EROSIONWeathering Breaking up of the rocks on the earths surface.

Erosion - is the wearing away of the landscape by different agents like water, wind ,ice .

WORK OF A RIVER

FLOOD PLAINS

DELTA

WORK OF SEA WAVES

WORK OF ICE

WORK OF WIND