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NATURAL HAZARDS - Coggle Diagram
NATURAL HAZARDS
PLATE MOVEMENTS
DIVERGENT OR CONSTRUCTIVE
PLATES MOVE AWAY FROM EACH OTHER
CAUSING
NEW BALSATIC OCEAN CRUST CALLED SEA FLOOR SPREADING, VOLCANIC ISLANDS, SHIELD OR BASIC VOLCANOES, RIFT VALLEYS
TRANSFORM OR CONSERVATIVE
PLATE SLIDE PAST EACH OTHER IN THE SAME OR OPPOSITE DIRECTIONS
CAUSING
EARTHQUAKES
CONVERGENT OR DESTURCTIVE
PLATES MOVE IN OPPOSITE DIRECTIONS
CAUSING
EARTHQUAKES, COMPOSITE OR STRATO VOLCANOES, VOLCANIC ISLANDS
VOLCANOES
A HOLE OR CRACK THROUGH WHICH AN ERUPTION OCCURS
VOLCANIC ERUPTIONS
OCCURS WHEN MAGMA IS RELEASED FROM A VOLCANO
CALM AND EFFUSIVE
LAVA FLOWS
EXPLOSIVE
GASES, ASHES AND PYROCLASTIC DENSITY CURRENTS
TYPES
SHIELD OR BASIC
FOUND ON DIVERGENT BOUNDARIES
COVER A WIDE AREA WITH GENTLE SLOPES
100 - 900 METRES
FORMED BY LAVA FLOWS
LOW VISCOSITY MAGMA
NON EXPLOSIVE
BASALT LAVA FLOWS
COMPOSITE OR STRATO
FOUND ON CONVERGENT BOUNDARIES
100-3500 METRES
CONICAL SHAPE WITH STEEP SLOPES -NARROW BASES
VISCOSITY MAGMA
EXPLOSIVE
VOLCANOES
EFFECTS ON PEOPLE
STRATEGIES