Opening in Earth's crust that allows the energy to escape to the surface
Is a rupture in the crust of a planetary-mass
There are volcanoes because Earth's crust is broken into tectonic plates.
Lahar
Mixture of water, powerful enough to carry away trees, boulders, and logs, can bury buildings and houses
Ash Fall
Composed of bits and pulverized rocks, can cause respiratory diseases such as: asthma, bronchitis, and emphysema
Pyroclastic Flow
Fast moving rocks and gasses, very high temp, can easily destroy man made structures, contains high-density mix, moves at very high speed down volcanic slopes
Ballistic Projectile
Rock fragments ejected from volcano, can travel 5km or even further, like cannonballs
Volcanic Gas
Consist of sulfur dioxide and sulfide, restricted, also causes respiratory problems and other health risks
Lava Flow
Molten rocks, can cause forest fire
Trenches
Deepest part of ocean floor
Transform Boundaries
Where crust is neither produced nor destroyed
Convergence
Can occur between an oceanic and a largely continental plate, or between two largely oceanic plates, or between two largely continental plates
Signs of Impending Volcano
Increase in frequency of earthquakes
Deformation in the ground
Landslide and rockfall
Drying up of springs and freshwater
Top provinces at risk
Camiguin - highestrisk
Sulu - secondhighestrisk
Albay
Sorsogon
Bataan
Precautionary before an eruption - Stay updated with the local news.
Precautionary during an eruption - Follow evacuation orders by local authorities and remind family members of disaster plan.
Precautionary after an eruption - Wait for an announcement from authorities.
