volcanoes amd earthquake Flashcards
eruption
The release of lava and gases from a volcano
Volcano
Hill or mountain formed by material that erupts on the earth surface caused by action of magma below surface
aftershock
A small earthquake that occurs after a large earthquake
earthquake
movement of the ground caused by the release of energy from a sudden shift of rocks in earths surface
epicenter
The point on earth surface directly above the focus of an earthquake
magma
molten material Bonita within the Earth’s crust from which igneous rock is formed
lava
The molten fluid rock that flows from a volcano or volcanic vent
fault
A break in Earth’s crust where movement of rock occurs
Focus
The point below earths surface work movement of rock produces an earthquake
caldera
A large basin like depression resulting from the explosion or collapse of the center of the volcano
magma chamber
A pocket in the volcano where magma collects
vent
an opening at the earth surface from which volcanic material lava steam or gas is released
viscosity
A measure of fluids resistance to flow example honey flow slower than water
Crater
bowl shaped area that may form around a volcano central vent
pipe
A long tube in the ground that connects the magma chamber to earths surface
