Earthquakes And Volcano Review Sheet For Test Part 2- 11/20/2014 Flashcards
Move slowly through rock
S waves
Longitudinal waves
P waves
Large sea wave created by an underwater earthquake, volcano, or landslide
Tsunami
Measure AMOUNT OF ENERGY released by earthquake
Moment magnitude scale
Ash, dust, cinders, blocks thrown into the air from volcanic eruptions
Tephra
Movement of earth’s crust releases…
Stored energy
Break in a mass of rock along which movement occurs
Fault
Cannot travel through liquid
S wave
Example of a cinder come volcano
Para cutin
Hawaii was made from a
Hot spot (middle of plate)
Hot, fast moving lava
Pahoehoe
Example of transform fault
San-Andraus fault
Location under earth’s surface where earthquakes start
Focus
Rocks pull on crust stretching rock
Tension (a stress)
Scale that measures MAGNITUDE of earthquakes
Richter scale
Molten rock on Earth’s surface
Lava
Example of a composite volcano
Mt. Fuji
Molten rock UNDER earth’s surface
Magma
Location on earth’s surface above focus
Epicenter
Volcanoes with:
Broad slopes
Quiet eruptions
Largest volcanoes
Shield volcanoes
Transverse waves
S- waves
Clouds of tephra with hot gas that move fast
Most dangerous part of a volcanic eruption
Phyroplastic flow
Fault cause by tension
Normal fault
RATES type of damage and other effects noted by observers
Modified Mercalli scale
Slow, chunky lava
AA
Rocks are pushed into two opposite directions (what stress?)
Shearing
Example of a shield cone volcano
Mauna Loa
Wave that looks like a compressed spring
P wave
Plate that matches with ring of fire
Pacific plate
Rocks are squeezed until they break (type of stress on a rock)
Compression
Energy from earthquakes is released as…
Seismic waves
Wave that looks like a rope being shaken up and down
S wave
Type of eruption where lava erupts in a stream of easily flowing lava
Quiet eruption
Fault caused by compression
Reverse Fault
Underwater lava
Pillow lava
Used to record P waves, S waves, and Surface waves
Seismograph
Volcano built from alternating layers of ash, cinders and lava
Explosive eruptions
Composite volcano
Fault cause by shearing
Strike-slip fault
Structure that allows magma to rise to the surface
Pipe (Condult)
Waves that move slower than S and P waves but produce larger ground movements (more damage)
Surface waves
80% of all volcanoes are located here
Ring of Fire
A volcano that is currently erupting or has erupted in the past 10.000 years
Active Volcano
Active volcano that’s not erupting but is thought to erupt again
Dormant
This is connected to the conduit and is a bowl shaped pit at top of volcano
Crater
First waves to reach the recording station
P waves
Depression at top of volcano caused by shell collapse
Caldera
Volcano with steep sides, explosive eruptions of ash and cinders
Cinder cone
Occurs in middle of plates & the region where hot rock extends from the mantle
Hot spot
Protrusion from extra lava flows
Lava dome
Type of eruption when LAVA and HOT GASES are thrown outward (Lava solidifies quickly)
Explosive eruption
Has not erupted for 10,000 years and is not expected to erupt again
Extinct
Where magma collects
Magma chamber
Damage of earthquake depends on…
- Distance between populated areas and the epicenter,
- The depth of the focus, and
- The physical properties of the surface rocks.
Composite, explosive Mt. Fuji
…
Shield volcano, quiet eruption, Mona loa
Normal- tension
Compression-reverse
Shearing- strike- slip
Thank You! :)