Volcanoes (18.1)
(Volcanoes 18.2)
Earthquakes (19.1-2)
Earthquakes (19.3-4)
Techtonics
100
What is the process of volcanoes releasing magma, hot fluids, and other gasses?
Volcanism
100
Dense magma causes this type of eruption.
Explosive
100
This type of force pulls an object apart.
Tension
100
How many seismographs are needed to find the epicenter?
3
100
What was the landmass called when all the continents were connected?
Pangea
200
Where do most volcanoes form on Earth?
Plate boundaries
200
What are both types of tephra?
Ash and Blocks
200
The San Andreas Fault is what type of Fault.
Strike Slip Fault
200
Pancaking is an example of what type of damage?
Structural
200
What type of boundary is where plates come together?
Convergent boundary
300
What percentage of volcanism takes place under water?
66%
300
What is the biggest threat for those living close to a volcano?
Pyroclastic flow
300
What instrument measures Earthquakes?
seismometer
300
What is an area of a fault line that has not had earthquakes in a long time.
Seismic Gap
300
What type of boundary is where plates come apart?
Divergent bondary
400
This type of volcano is short, coned shaped and has violent explosions.
Cinder Volcano
400
What type of magma has the highest gas content?
Rhyolitic
400
What type of wave in an Earthquake causes the most damage?
Surface waves
400
What scale is used to measure seismic energy?
Richter Scale
400
This is a spot where a plate is thin, and magma can make it through.
Hot spot
500
Volcanos with the most lava production are at what tectonic feature?
Hot spots
500
This property describes a fluids resistance to flow.
Viscosity
500
What is the focus of an earthquake?
It is where the earthquake starts underground
500
When the s and p waves are 4 minutes apart, what is the distance from the epicenter?
2*10^3 km = 2000km
500
This is what the area is called when an oceanic plate is going below a continental plate.
Subduction zone