Volcanoes
What is a volcano ?
A mountain that has a crater or vent, which lava, rock fragments, and hot vapor gas are being/have been erupted from
What is the Ring of Fire ?
a long horsehoe-shaped earthquake prone belt of volcanoes and tectonic plate boundaries that fringes the Pacific Ocean basin
What is the difference between oceanic and continental crust ?
Oceanic is denser
Where was the San Andreas Fault earthquake ?
San Fransico, California
Which volcano structure is circular mound-shaped ?
Lava Dome Volcano
What was Wegener's name for the one large land mass ?
Pangea
The process that continually adds new crust is ?
sea-floor spreading
How strong was Japan's magnitude of the earthquake ? (located in Indonesia, year 2004)
8.9
Which volcano structure is broad, with slightly sloping sides, and is domed ?
Shield Volcano
Who created the tectonic plates theory ?
Alfred Wegener
When continental plates pull apart and valleys appear ?
Rift Valley
What year did the magnitude of a 9.1 earthquake occur on December 26 ?
2004
Which volcano structure is built up of layers with lava and ash
Stratovolcano
What book was expanded because he added in his theory about tectonic plates ?
The Origin of Continents and Oceans
When rocks are pulled apart it is what ?
Tension
The town Prince William Sound had a magnitude of 9.2 earthquake, what state did this occur in ?
Alaska
How many types of volcanoes are there and how are they structured ?
4
Cinder Cone: circular or oval shape cone
Strato: conical (cone like) and composite with many lava vents
Shield: large and broad
Lava Dome: small masses of lava, which is thick
The date that Wegener proposed the theory of plate tectonics is...
1915
When two rocks converge, and the denser slab sinks into the asthenosphere
subduction zones
What is the date of the 9.5 magnitude earthquake that took place in Chile ?
May 22, 1960