WHAT MAKE MAGNA BRUST OUT IN VOLCANO ?

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VOLCANOES ERUPT WHEN HOT MOLTEN

 ROCKS FROM DEEP DOWN IN THE EARTH'S

HARD OUTER LAYERS AND REACHES THE SURFACE.















THE MOLTEN ROCKS IS CALLED MAGMA, 

WHEN IT REACHES THE SURFACE ,IT IS CALLED LAVA .













MOST VOLCANOES OCCUR NEAR THE EDGE OF PLATES.






MANY RISE ALONG THE OCEAN RIDGES WHERE MAGMA 

RUSHES TO FILL THE GAPS FORMED AS PLATES MOVE APART.






OTHER VOLCANOES GET THEIR MAGMA FROM THE PLATES 

THAT ARE MELTED AS THEY ARE PULLED BENEATH OTHER PLACES.












WHAT ARE VOLCANOES MADE OF?



SOME VOLCANOES ARE CONE-SHAPED AND MADE OF VOLCANIC ASH OR CINDERS. 

DOME-SHAPED SHIELD VOLCANOES ARE MADE OF  HARDENED LAVA.

INTERMEDIATE VOLCANOES CONTAIN LAYERS OF BOTH ASH AND LAVA.




MAGMA REACHES THE SURFACE THROUGH VENTS,WHICH ARE HOLES IN THE GROUND.


LAVA  MAY BURST  FROM A CENTRAL VENT OR THROUGH SIDE VENTS.


LAVA FLOW BURN EVERYTHING IN THEIR PATHS.

    





















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