Earthquakes
What point IN the earth does and earthquake start
focus
In a convection current, hot things do what?
Rise
When one plate sinks under another
What is subduction
Why is it called the rock "cycle"?
Rocks can keep changing!
This layer is composed on liquid iron and nickel
outer core
What point on the SURFACE does an earthquake start?
epicenter
In a convection current, cold things do what?
Sink
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
Where does convection occur inside the Earth?
The mantle
A mountain range is formed by...
Convergent plate boundaries
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
The convection currents inside the Earth cause this on the surface of the Earth...
Movement of tectonic plates
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 two types of energy waves AND their directions.
S Waves go side-to-side & P Waves do a push-and-pull
Why do cold things sink in a convection current?
They are more dense.
Sea-floor spreading and continental drift is believed to be caused by....
Divergent plate boundaries
The vocabulary term for breaking down a rock
Weathering
What layer is liquid
Outer core