Formation of Volcanoes
Molten mixture of rock-forming substances, gases, and water from the mantle
What is magma
This is molten rock above ground
What is lava
a live volcano that is currently erupting or has shown signs that it may erupt in the near future
What is an active volcano
the richter scale measures this
What is an earthquake
usually cone-shaped landform produced by erupted magma
What is a volcano
The place where magma comes from
What is the (upper) mantle
This is molten rock below ground
What is magma
formed from only quiet eruptions
What is a shield volcano
A break in the Earth's crust along which blocks of crust slide past each other
What is a fault
Tiny, powder-like fragments
What is ash
the name of the bowl-shaped area that forms at the top of a volcano
What is the crater
This material changes the thickness of lava
What is silica
a dead volcano that is unlikely to erupt again
What is an extinct volcano
The hotter the magma...
What is the faster it will flow
a stream of runny, hot lava.
What is lava flow
The volcanic belt formed along boundaries of tectonic plates in the Pacific Ocean
What is the Ring of Fire
This is fast moving hot lava
What is pyroclastic flow
the crater that is left behind after a volcano "blows" itself up or sinks into itself
What is a caldera
The higher the silica content...
What is the higher its viscosity
a compound in magma made of particles of oxygen and silicon
What is silica
Volcanoes can happen at these type of boundaries
What are divergent and convergent boundaries.
The physical property of a liquid's resistance to flow
What is viscosity
a volcano that forms from alternating quiet and explosive eruptions
What is a composite volcano
Name the parts of a seismometer.
Frame, spring, weight, marking device (like a marker or pen), and a paper.
a cloud of hot ash, embers, and poisonous gas that has the power to know over trees and small buildings
What is pyroclastic flow