Seismic Waves
Which is the slowest Seismic wave?
Surface waves
Volcanoes can form over what plate boundary?
Divergent plate boundaries and Convergent plate boundaries
How many Faults are there?
3
What is the ring of fire?
An area of earthquakes and volcanic activity that surrounds that Pacific Ocean
What is a Seismologist?
Scientist that study Earthquakes.
Name the three types of Seismic waves?
Primary, Secondary, Surface Seismic waves.
What is the definition of a volcano?
A vent in earth crust through which molten rock flows
What are the three types of Faults?
Strike-slip, Normal, and Reverse
What are volcanoes that are not associated with plate boundaries called?
Hot spots
What is an epicenter?
The location on Earth's surface directly above the earthquake's focus
What are S waves?
Secondary waves
What type of volcano is broad, gently sloped, and formed from fluid basaltic lava flows?
Shield Composite
Why does a fault form?
When stress builds in places like a plate boundary.
How many active volcanoes are in the United States?
60
Where do earthquakes occur?
Along the fault.
What motion do surface waves travel in?
Up and down in a rolling motion
What type of volcano is a large, bowl-shaped depression formed when a volcano erupts and collapses, often after emptying its magma chamber?
Caldera
What is the definition of a fault?
A break in Earth's lithosphere where one block of rock moves toward, away from, or past another.
Defined volcanic ash
Tiny particles of pulverized volcanic rock and glass high into atmosphere
Richter Scale, Moment magnitude Scale, and The Modified Mercalli Scale
What do Seismic waves exactly do?
Move back and forth, up and down, or in an elliptical motion parallel to the direction the waves travel.
What type of volcano is a a steep-sided, small volcano formed by the accumulation of solidified lava fragments?
Cinder cone
What direction does a rock have to move along the fault in order to cause volcanoes?
Any direction, it depends on the force applied to the fault.
Explosive volcanoes can produce fast-moving avalanche, and rock is called what?
Pyroclastic flow
What are Modified Mercalli Scales supposed to do?
They are used to elevate earthquakes intensity based on the damage that results.