Volcanoes
type of volcano that forms above a hot spot when magma erupts through the crust and reaches the surface
hot spot volcano
What are the 4 layers of the Earth?
crust, mantle, outer core, inner core
3 types of stress in the crust
tension, compression, shearing
area beneath Earth's surface where rock is under stress, starting an Earthquake
focus
3 forms of heat transfer
radiation, conduction, convection
3 locations where volcanoes can form
divergent boundaries, convergent boundaries, hot spots
When the mantle gets hotter what happens to its density?
it decreases, so the mantle rocks go up
3 types of faults
normal, reverse, strike-slip
Point on the surface directly above the focus
epicenter
name of "super continent" before it separated into continents
Pangea
4 types of volcanoes
composite, shield, lava dome, cinder cone
How do we call it when an oceanic crust gets under a continental crust and goes back to the mantle?
subduction
Shaking and trembling that results from the movement of rock beneath Earth's surface.
Earthquake
Large wave formed by an earthquake
tsunami
TRUE or FALSE
Mid-ocean ridges are places where oceanic crust sinks back to the mantle.
FALSE
deep-ocean trenches
volcano that has alternate layers of lava and layers of ash
composite
Boundary where 2 plates move away from each other
Divergent boundary
How do P waves move?
back and forth
melted mixture of rocks, gases and water from the mantle
magma
4 effects of earthquakes
liquefaction, aftershocks, tsunami, shaking
three stages a volcano goes through
active, dormant, extinct
Forces that cause the plates to move?
convection currents in the mantle
How do S waves move?
up and down
what do we call it when magma cools down inside a volcano
intrusion
How hot can magma and lava get?
From ______ °C to ______°C
750°C - 1175°C