Earthquakes
A break in the earth's crust
fault
This state is mostly made of Volcanos.
Hawaii
The Earth's Crust is made of these which are constantly moving...
Plate Techtonics
About how thick is the Mantel?
1800 miles thick
What type of plate boundary is located in California?
Transform boundary
The type of FAULT occurs when two plate tectonics slide past each other.
Transform Boundary
This is an area not on a plate boundary where volcanoes frequently occur
hot spot
This layer of the earth is the hottest.
Inner Core
What is the name of the plate that we live on?
Pacific Plate
They can form when earth's plates collide
Mountains
This type of fault occurs when plates collide or move towards each other
Convergent Boundary
Before it comes out of the earth, what is lava referred as?
Magma
The earth's outer core is made up of this
very dense liquid (iron and nickel)
What causes the plates to move within the earth?
Convection Current
The theory that continents drifted apart is called?
Continental drift
What types of boundaries can produce volcanic activity? (2)
Convergent and Divergent boundaries
Another term for a volcano that is not dead, but not active.
Dormant
Most of the earth's mass (weight) is located here
mantle
What facts did Alfred Wegener use to prove to other scientists that the continents were once joined?
Plant and Animal fossils located on continents that are not currently joined
The force that moves tectonic plates
convection currents in the mantle
What is the name of the earthquake fault that runs through California
San Andreas Fault
What is the name given to a volcanic peak that no longer has the possibility of erupting?
Extinct
What 2 types of crust make up Earth's outer layer?
Oceanic Crust and Continental Crust
What happens when an oceanic crust plate and a continental crust plate collide? (why)
The oceanic crust goes under the continental crust because it is denser.
What geologic marvel has formed on the convergent boundary located in the Atlantic Ocean along the South American, North American , African and Eurasian plates?
The mid-Atlantic Ridge, the world's longest mountain range