Plate Tectonics
These boundaries occur when one plate dives beneath another, melts, and produces magma.
convergent
What are the three types of volcanoes?
shield
cinder cone
composite
What volcanic eruption occurred in 79 AD in Rome?
Mt. Vesuvius
What is the name of heat-driven cycles that move energy from one location to another?
convection currents
Which plate boundary generates new crust?
Divergent
As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone for this volcano.
Cinder cones
In what country is this famous volcano: Eyjafjallajokull?
Iceland
What is the heat source that moves molten rock in the mantle?
the core
Which type of plate boundary destroys crust?
Convergent
These volcanoes are sometimes called composite volcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash,
stratovolcanoes
Almost all of the most destructive volcanoes occur on which type of plate boundary?
convergent
If you heat a liquid on one side, it rises and creates a convection current. However, if you move the heat source to the other side, the direction of the circulation will what?
will reverse
How do plate tectonics cause earthquakes?
Plates grind past each other and the crust is broken and jagged/fracturing
These volcanoes are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield.
Shield volcanoes
These boundaries occur when plates pull apart and magma rises to fill the gap forming volcanoes.
Divergent
What is one positive, long-term effect of volcanic eruptions for humans?
fertile soil