Volcano
Shield Volcano- Lava only-nonexplosive
Cinder Cone volcano-Pyroclastic materials only; explosive
Composite Volcano-Lava and pyroclastic material; explosive
Convergent boundary- tectonic plates move towards each other; the oceanic plate is subducted (goes below) the continental crust. oceanic plate is melted
Divergent boundary-tectonic plates move away; magna rises
Hot Spot-no tectonic plate boundary; volcano forms possibly due to weak crust or extra hot magma
Viscosity-slow moving liquid; a liguid's resistance to flow
Lava types-Block lava-lava cools in; pahehoe-slow lava wrinkles; Aa jagged surface; pillow lava-lave cools underwater
Pyroclastic material and types:molten rock that solidifies (hardens) as it travels through the air; Rock fragments created by explosive volcanic eruptions
~volcanic black
~Volcanic bombs
~Lapilli-pebbles
~Volcanic ash
Lava: molten rock on the earth's surface
Magma: molten rock beneath the earth's surface
Ring of Fire: 75% of the earth's volcanoes are found on the continents near the Pacific plate boundary