Earthquakes and Volcanoes
Cinder cone
A cinder cone is small and steep-sided and it erupts basaltic lava.
Composite volcano
A composite volcano is large and steep-sided, occurs along convergent plate boundaries, and results from explosive eruptions.
What is a fault?
A fault is a break in Earths Lithosphere where one block of rock moves toward, away from, or past another.
Shield volcano
A shield volcanoes have gentle slopes of basaltic lava and they are located along divergent plate boundaries and ocean hot spots.
What is rock deformation?
Rock deformation is where a force such as pressure is applied to rock along plate boundaries, which allows the rock to change shape.
Earthquakes
Earthquakes are the vibrations in the ground that result from movement along breaks in Earths lithosphere.
How do earthquakes form?
Earthquakes result from the buildup and release of stress along active plate boundaries.
Modified Mercalli scale
Measures the earthquakes intensity that results from damage; determined based on descriptions of the earthquakes effects; scale ranges from 1 to 12
Moment magnitude scale
Measures the total amount of energy released by an earthquake; energy released depends on: the size of the fault; the motion that occurs; the strength of the rocks.
Where are most earthquakes found?
Most earthquakes are found in oceans and along the edges of continents.
Where do the shallowest earthquakes happen?
Shallow earthquakes occur where plates separates along a divergent plate boundary.
Where do the deepest earthquakes happen?
The deepest earthquakes occur where plates collide along a convergent plate boundary.
What are the three types of motion found along faults?
The three types of motion found along faults are strike-slip, normal, and reverse.
Richter Magnitude scale
This scale uses the amount of ground motion at a given distance from an earthquake to determine magnitude.
Viscosity
Viscosity is a liquids magma resistance
How do volcanoes form?
Volcanoes form from the movement of earths tectonic plates.
