Earthquakes
What point IN the earth does and earthquake start
focus
Volcanoes form by what moving?
Earths plates
When one plate sinks under another
What is subduction
minerals describe what best?
Rocks
This layer is composed on liquid iron and nickel
outer core
What point on the SURFACE does an earthquake start?
epicenter
what are hotspots
Active areas below Earths crust
The Lithosphere is home to....
Tectonic plates
molten rock underground is known as what?
Magma
This layer has the greatest density
inner core
The device that measures Earthquakes is called...
Seismograph
The Ring of Fire is located on top of what plate boundary?
Divergent
cooled magma on the edge of plates would be evidence for what?
Sea floor spreading
sedimentary rock is made by what material?
Sediments
The lower part of the mantle is called....
mesosphere
On what scale do we measure Earthquakes?
Richter scale
name one of the three types of volcanoes
shield composite or cinder cone
All the continents used to be one big landmass called....
pangea
heat and pressure forms what rocks
metamorphic
The upper part of the mantle that is malleable is called...
asthenospere
Name the order of seismic waves from first to last
S waves- P waves- Surface waves
What is viscosity
Resistance to fluid and flow
Sea-floor spreading and continental drift is belived to be caused by....
Convection currents in the mantle
when sediments are moved to a new spot to form sediments
deposition
What layer is liquid
Outer core