Mantel Convection
The process of hot molecules rising while cooled molecules sink
What is Convection
This boundary type neither creates new crust, nor destroys existing crust.
What is a transform boundary
This measurement scale is the most simplistic, ranking how the shaking feels, or looks on a scale of 1-12
What is the Mercalli Scale.
The speed at which surface waves move compared to body waves
What is slower (Surface waves move slower)
These waves travel the fastest, reaching the seismograph before any other wave type.
Primary Waves (P. Waves)
Convection in the mantel moves these
These geographic features are the result of a convergent boundary subduction zone between two pieces of oceanic crust.
The Richter scale uses this instrument to record seismic waves.
What is a seismograph.
Surface waves cause the most of this to cities and communities
What is destruction or harm
The energy from these waves pass through particles perpendicular to the direction of the wave’s energy path.
Secondary Waves (S. Waves)
When the Earth's core heats up the mantel, the molten rock's density will
What is decrease (Get lighter)
This plate is the largest of all the Earth's tectonic plates.
What is the Pacific plate
This scale, favored by modern scientists, uses a combination of things to find a detailed measurement of energy released during an earthquake event.
What is the Moment Magnitude scale
This surface wave moves in a flat shaking motion back and forth
What is a Love wave
Solids (rock)
When this happens in mantle material, it creates rising and sinking motion, it is responsible for the circular current.
What is change in density
This crust type is typically older and denser than its counterpart, which it subducts under in a convergent boundary.
What is oceanic crust
This is the point on the surface above the focus that is considered the original starting point of the earthquake
What is the epicenter
Reyleigh waves move in this type of motion
What is rolling, or ground roll
These waves move similar to a slinky or accordion by expanding and compression in the same direction as the waves energy path.
What are P. Waves
This is the source of the internal heat coming from the inner and outer core of the earth that powers the convection cycles.
What is elemental radioactive decay
This term for an underwater mountain range is the result of an oceanic x oceanic divergent boundary.
What is a mid ocean ridge.
These two waves types are used across three different seismographs to locate the epicenter
What are P. waves and S. waves
DOUBLE POINTS **Love waves were named after A.E.H Love in this year**
When is 1911
The Secondary (S) waves are also known by this name, describing the way they move rock in a side to side or up and down motion
What are the shaker waves