Earthquakes
Vibrations caused by the sudden movement of rocks along a break in the Earth's crust.
What are "Seismic Waves"?
What is the name of the plate boundary that will one day cause "The Big One" in California?
What is the San Andreas Fault?
What kind of Tectonic plate boundary occurs where plates pull apart?
What is a divergent boundary?
An opening in the Earth's crust through which molten rock flows.
What is a vent?
With this earthquake scale, an increase of 1 unit on the scale represents ten times the amount of ground motion.
What is the Richter Scale?
The point on Earth's surface directly above the focus of an earthquake.
What is the epicenter?
The type of seismic wave that causes particles to move side to side.
What is a secondary wave?
What type of volcano is Mt. Fuji (in Japan)?
Composite Volcano
A large volcano with gently sloping sides.
What is a shield volcano?
The earthquake intensity on this scale is based on descriptions of an earthquake's effects on people and structures. (Roman numerals)
What is the Mercalli Scale?
A scientist who studies earthquakes.
What is a seismologist?
The type of seismic wave which causes particles in the ground to move in a push-pull motion.
What is a primary wave?
What kind of Plate boundary forms where two plates collide?
What is a convergent boundary?
A location where volcanoes form far from plate boundaries.
What is a Hot Spot?
The distance from an earthquake epicenter can be determined by finding the difference between the arrival times of the P and _____ waves.
What are S waves?
The location inside Earth where the rocks along a fault first break causing an earthquake.
What is the focus?
This type of seismic wave that causes particles in the ground to move up and down in a rolling motion.
What is a surface wave?
A crack or fracture in Earth's lithosphere along which movement occurs.
What is a fault?
A small, steep-sided volcano made of cinders, ash and small volcanic rocks.
What is a cinder cone?
Magma that erupts onto Earth's surface is called?
What is lava?
An instrument that measures and records seismic waves.
What is an seismograph?
The squiggly lines of an earthquake recorded by a seismograph.
What is a seismogram?
Tiny particles of pulverized volcanic rock and dust.
What is volcanic ash?
A large, steep-sided volcano that forms at subduction zones.
What is a composite volcano?
Molten rock formed beneath Earth's surface?
What is magma?