Two blocks of rock slide horizontally past each other in opposite directions
What is strike-slip
100
tiny particles of pulverized volcanic rock and glass.
What is volcanic ash
100
free 75 points
What is awesome
100
an instrument that measures and records ground motion and can be used to determine the distance seismic waves travel.
What is seismometer
100
energy that travels as vibrations on Earth and in Earth
What is seismic wave
200
Forces pull two blocks of rock apart. the block of rock above the fault moves down relative to the block of rock below the fault
What is normal fault
200
a large volcano with gentle slopes of basaltic lavas, common along divergent plate boundaries and oceanic hotspots.
What is Shield volcano
200
Happens to primary waves when they hit the liquid outer core.
How they slow down
200
A graphical illustration of seismic waves
What is Seismogram
200
The rock and soil are enriched with valuable nutrients.
What is positive results of Volcano eruptions
300
Forces that push two blocks of rock together. The block of rock above the fault moves up relative to the block of rock below the fault.
What is reverse fault
300
a small, steep-sided volcano that erupts gas-rich, basaltic lava.
What is cinder cone
300
Type of waves that travel through solids and liquids
What is P-waves
300
a location inside Earth where seismic waves originate and rocks first move along a fault and from which seismic waves originate.
What is focus
300
Most active volcano in Hawaii
What is Kilauea
400
measures earthquake intensity based on descriptions of the earthquake’s effects on people and structures.evaluates the damage that results from shaking
What is Modified Mercalli scale
400
a location where volcanoes form far from plate boundaries.
What is hot spot
400
Type of waves that do not travel in liquids
What is S-waves
400
a type of seismic wave which causes particles in the ground to move in a push-pull motion similar to a coiled spring. These waves arrive first to a seismometer.
What is primary wave
400
add 50 free points
What is super cool
500
measures the total amount of energy released by the earthquake
What is Moment Magnitude scale
500
a large, steep-sided volcano that results from explosive eruptions of andesitic and rhyolitic lavas along convergent plate
What is composite volcano
500
Type of waves that travel deepest into the center of Earth
What is P-waves
500
a type of seismic wave that causes particles to move at right angles relative to the direction the wave travels. These waves arrive second to a seismometer.
What is secondary waves
500
measures magnitude
uses the amount of ground motion at a given distance from an earthquake to determine magnitude
is used when reporting earthquake activity to the general public