Earthquakes
This is where an earthquake begins.
What is the focus?
A broad domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.
What is a Shield Volcano?
The boundary where two plates slide past one another.
What is a Transform Fault Boundary?
This is the part of the Earth between the core and the the crust. It is also where convection currents occur.
What is the Mantle?
A major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur. Also, a famous song by Johnny Cash.
What is the Ring of Fire?
This is the point on Earth's surface directly above the earthquake's focus.
What is the epicenter?
The simplest type of volcano. They are built from particles and blobs of lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone.
What is a Cinder Cone Volcano?
This is the gradual movement of the continents across the earth's surface through geological time.
What is Continental Drift?
This is the reason the youngest rocks on the ocean floor are found at the mid ocean ridge.
What is Sea-Floor Spreading?
If you were in close proximity to an erupting volcano what would you do?
What is Run, Scream, ....answers will vary?
An area that is both a major earthquake zone and a major volcano zone. Located around the Pacific Rim.
What is the Ring of Fire?
A conical volcano built up by many layers of hardened lava, tephra, pumice and ash.
What is a Composite Volcano OR Stratovolcano?
The type of boundary that occurs when two plates move together causing one plate to be subducted into the mantle beneath the other plate.
What is Convergent Boundary?
This type of volcano hasn't erupted recently, but could at any moment.
What is an Active Volcano?
This is an underwater mountain range, formed by plate tectonics.
What is Mid-Ocean Ridge?
A type of excavation or depression in the ground that is generally deeper than it is wide, and narrow compared with its length.
What is a trench?
This factor is responsible for the main difference between between quiet eruptions and explosive eruptions.
What is the silica content of the magma?
higher silica content = high viscosity
lower silica content = low viscosity
This type of boundary occurs when two plates pull apart from each other and a crack in the ocean floor appears.
What is a Divergent Boundary?
This type of volcano has not had an eruption for at least 10,000 years and is not expected to erupt again.
What is an Extinct Volcano?
This occurs when dissolved gases are trapped in magma.
What is the magma erupts to the surface?
The instrument used to record earthquake waves.
What is a seismograph?
Honey has this type of viscosity level.
What is High viscosity level?
A volcano that has not erupted recently but is expected to do so again.
What is a Dormant Volcano?
This is the location where volcanoes are most likely to be found.
Where is along divergent and convergent boundaries?
The following evidence supports This scientist's hypothesis:
"Fossils of the same organisms have been found on different contintents."
Who is Alfred Wegener?