Layers of the Earth
This is the more dense of the two crust layers
Oceanic Crust
This is the Canadian Geophysicist credited with the theory of continental drift
Alfred Wegener
The type of seismic wave responsible for the most destruction
L wave
These three components effect the viscosity of magma
Temperature, Siica Content, Dissolved Gasses
The ring of fire is located around which tectonic plate
The pacific
This is the layer of the earth consisting of the outer mantle in deep crust
The Asthenosphere
The three types of plate boundaries
Convergent, Divergent, Transform
The exact location of the origin of the earthquake is referred to as
The focus point
This volcano forms from alternating layers of lava and pyroclastic flow
Composite cone
This anomaly travels up to 900km/h and may be undetectable until movements before its coastline arrival
Tsnumai
This is referred to as the “layer of rock”
The Lithosphere
The study of patterns of alternating orientation of magnetite on the ocean floor in the North and South direction is referred to as
Paleomagnetism
The reason that earthquakes do not occur deeper than 700km under ground
Subduction plate has melted
What would you expect the viscosity of lava for a shield volcano to be
Low
This type of seismic wave sends compressional force and effects the volume of a material
P wave
This section layer of the earth has a liquid consistency
The outer core
The Hawaiian Islands are sitting on top of a hot spot indicating that the Pacific plate is moving in which direction?
North East
S and P waves may reach a seismic startion prior to an L wave because...
They can travel through the body of the earth
This is a blocky type of lava formed when there is low silica content
Aa
This term is used to describe how a rock may be prevented from melting despite being situated at the correct melting temperature
Confining pressure
The inner core of the earth consists of what major element
Iron
The discovery of the mid Atlantic ridge lead to this theory that describes the “recycling” of oceanic crust
Sea floor spreading hypothesis
The P wave shadow zone occurs between what refraction angles at the outer core?
105 and 140
This type of opening is formed when immense amounts of gas is released from the magma chamber resulting in a decrease of pressure
Caldera
This type of volcano possess the steepest angle of inclination
The cinder cone