Volcanos
What are the two types of lava?
Aa and pahoehoe
Which wave would you see first due to traveling fastest?
Primary Waves/ P Waves
What kind of boundary is an earthquake?
Divergent boundary
(Plate going under another)
Where do most earthquakes occur?
Outer edge of the Pacific Ocean
Name the 3 types of volcanoes.
What do Body Waves consist of?
Primary Waves and Secondary Waves
What is the point within Earth where the Earthquake starts?
Focus
Small earthquakes that often come before a major earthquake.
foreshocks
What if the Ring of Fire?
Area around the Pacific Ocean known for frequent earthquakes and volcanoes.
What is a seismogram?
Record of earthquake waves
Describe what an earthquake is.
Vibrations of Earth produced by rapid release of energy.
What is the cause of a tsunami?
Define gentle eruption.
Occurs when magma flows easily and gently bubbles out, the lava is thin and runny as it oozes out quietly from the vent.
What direction do L Waves/ Surface Waves move?
In an up and down motion.
What is an effect of an earthquake?
Landslides, fires, etc
Smaller earthquakes that occur after a major earthquake.
Aftershocks
What is pyroclastic flow?
The expulsion of ash, cinders, bombs, and gases during an explosive volcanic eruption.
____ and ____ of seismic waves are directly related to the density of the Earth's layers.
What is the scale used to measure Earthquakes?
Richter Scale (outdated)
Moment Magnitude (current)
Define liquefaction.