Perfect Plates
tectonic plates that move away from each other are called
divergent plates
the type of volcano with the most explosive eruptions
cinder cone
besides lava, these are the most common products of a volcanic eruption
gas and ash
what is the difference between magma and lava?
magma exists beneath the earth's surface, lava is above the surface
describe a subducting plate boundary
the biggest type of volcanoes
shield
true or false: low viscosity lava flows quickly
true
what are the two most common volatiles?
water, carbon dioxide
volatiles help create magma at what kind of plate boundary?
subducting plates
extremely viscous lava forms this kind of volcano
lava dome
Volcanoes can trigger what other natural disasters?
flooding, earthquakes, water contamination, wildfires, mudslides
during decompression, why is magma able to melt and rise towards the surface?
pressure decreases
Volcanoes most often occur near what part of a tectonic plate?
The boundary or edge
the tallest type of volcanoes
composite
one of the most common volcanic gases
steam, carbon dioxide, sulfur dioxide
volatiles help create magma at what kind of plate boundary?
subducting plates
it decreases
cinder cone
these tiny rock, dust and crystal particles generated by a volcanic eruption can cause extreme discomfort and health problems
ash
the temperature necessary to melt a substance
melting point