Crusty Crust
It is hot and made of solid rock.
This hypothesis traces oceanic crust from its origin at a mid-ocean ridge to its destruction at a deep sea trench and is the mechanism for continental drift.
What is the sea floor spreading hypothesis?
Forms when large amounts of fluid lava flows over an extensive area.
What is a lava plateau?
In geosciences, the force per unit area that is placed on a rock
What is stress?
How energy travels from the point of an earthquake
What are seismic waves?
Is about 85 percent iron with nickel making up much of the remaining 15 percent.
What is the earth's core?
In this hypothesis, hot buoyant mantle rises up a mid-ocean ridge, causing the ridge to rise upward. The hot magma at the ridge erupts as lava that forms new seafloor.
What is the sea floor rising hypothesis?
The most common type of volcano.
What are cinder cones?
When rocks under stress do not return to its original shape when the stress is removed
What is plastic deformation?
Waves that are only able to propagate through solids
What are secondary waves (S-waves)?
Is made up of many different types of igneous, metamorphic, and sedimentary rocks.
What is the continental crust?
Movement of the plates over Earth’s surface.
What are plate tectonics?
This type of volcano is the most dangerous volcano on the planet.
What are composite volcanoes?
If the blocks of rock on one or both sides of a fracture move, the fracture is called this
What is a fault?
Water heated below ground that rises through a crack to the surface
What is a hot spring?
Is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid.
What is the lithosphere?
Most geologic activities, including volcanoes, earthquakes, and mountain building, take place here.
What are plate boundaries?
Molten material inside the earth.
What is magma?
These record ground motions using electronic motion detectors
What are seismometers?
Heat generated by volcanoes that can create electricity to power civilization
What is geothermal power?
Is a partially molten upper mantle material that behaves plastically and can flow.
What is the asthenosphere?
The most famous transform boundary is which fault?
What is the San Andreas Fault?
A ropy type of lava that flows easily (low viscosity).
What is pahoehoe lava?
The greatest influence on the deadliness of an earthquake
What is population density?
When looked under a microscope, the volcanic “ash” is actual microscopic shards of this
What is glass?