Groundbreaking Events
Breaks in the earth's surface along which rocks can move
What are faults?
This measures the magnitude of an earthquake
What is the Richter scale?
Another name for molten rock
What is magma?
A funnel-shaped mound
What is a cone?
Volcanic gases
What is vog?
These move back and forth in a zigzag pattern
What are Love waves?
This is a record of an earthquake's movement
What is a seismogram?
This forms where a crack in the earth's crust allows magma and gases to come to the surface
What is a volcano?
Two-thirds of active volcanoes are found here
What is the ring of fire?
A byproduct of volcanoes created from cooled magma and lava
What is igneous rock?
These flow out from the focus in all directions
What are seismic waves?
These were the apostles who experienced an earthquake in jail as recorded in Acts
Who are Paul and Silas?
A mixture of cinders, ash, and rock
What is tephra?
This volcano has erupted in the distant past but is not expected to erupt again
What is a dormant volcano?
A laser beam used to assess the shape and size of a volcano
What is a geodometer?
Rocks moving horizontally past each other
What is a Strike-slip fault?
This is another result of an earthquake (hint: it is NOT a tsunami)
What is a volcano?
Another name for underwater eruptions
What are submarine eruptions?
This volcano produces a fountain of lava that runs down the sides
What is a Strombolian eruption?
This is located near an underground magma pool
What is a hot spring?
These waves roll similar to the way ocean waves roll
What are Rayleigh waves?
Each whole number measuring the intensity of an earthquake on the Richter scale is ___ times bigger than the previous one.
What is 10?
An avalanche of red-hot dust and gas
What is a pyroclastic flow?
This type of igneous rock is used to make abrasive soap and polish
What is pumice?
This volcano was a both a Pelean and Plinian eruption
What is mount Saint Helens?