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
In this year, San Francisco’s most infamous Earthquake occured.
1906
Sea floor spreading is found at which type of plate boundary?
Spreading
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
An area of raised flat land is called
a plateau
They can form when earth's plates collide
Mountains
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
What wo type of waves are produced by an earthquake?
P and S waves
The theory that continents drifted apart is called?
Continental drift
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
Charles ___________ invented this machine to measure the magnitude (size) of an earthquake.
Rictor Scale
The force that moves tectonic plates
convection currents in the mantle
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
Name three factors that explain why similar size earthquakes can cause differing damage levels
kind of rock, number, type and age of buildings and population density
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