Earthquakes
A break in the earth's crust
fault
This state is mostly made of Volcanos.
Hawaii
The Earths Crust is made of these which are constantly moving....hold on!
Plate Techtonics
Sea floor spreading is found at which type of plate boundary?
Spreading
Name for when plates are spreading apart
divergent
The type of FAULT occurs when two plate techtonics slide past eachother.
Fracture 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
They can form when earth's plates collide
Mountains
Name for when plates are colliding
Convergent
This type of fault occurs when plate techtonics is pushed up past another plate techtonic.
Colliding 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
The theory that continents drifted apart is called?
Continental drift
Name the 7 major tectonic plates
North American plate, Eurasian plate, Pacific plate, South American plate, African plate, Indo-Australian plate, Antarctic plate.
This device measures ground movement
seismograph
Another term for a volcano that is not dead, but not active.
Dormant
Most of the earth's mass is located here
mantle
The force that moves tectonic plates
convection currents in the mantle
The name for the super-continent that existed from 299 million years ago to about 180 million years ago
Pangea
This is the point that sits on the Earth’s Crust directly above the Earthquakes focus.
Epicenter
In the year 76AD, Mt. Vesuvius erupted, killing, but amazingly preserving, the people in a frozen, ashen state in this city.
Pompeii
What makes up the Lithosphere?
Earth's crust and solid part of the mantle
What three types of evidence support Wegener's theory of continental drift
Continents shape, Fossil records and alternating rows of magnetism on the ocean floor near the Mid Atlantic ridge
What is a subduction zone?
A collision of two plates where one sinks into the mantle.