Measures the amount of energy released during an earthquake.
Richter Scale
100
This is the theory scientists use to explain plate movements.
Plate tectonics
100
This is the first wave in an Earthquake that is a push-pull vibration
Primary wave (P-Wave)
100
This type of volcano is slightly dome-shaped and broad. They are the worlds largest volcanoes. They may erupt many times over a period of more than a million years.
Shield volcanoes
200
How many cores are there?
2 (Inner and Outer Core
200
Another name for a deep valley that is formed where two plates move apart.
Rift
200
This is a chain of mountains that runs through all the world's oceans. A lot of divergent boundaries are found here.
Mid-Ocean Ridge
200
This type of wave causes vibrations at right angles to the waves' direction of travel.
Secondary waves (S-Wave)
200
This type of volcano is built up from ashes, cinders, and rocks that burst from Earth during a violent eruption. These volcanoes erupt for a short period of time and are not very tall.
Cinder cone volcano
300
This is a zone of partially melted rock in the upper mantle.
Asthenosphere
300
Name of a boundary that has two plates who tend to move toward one another head on.
Convergent boundary
300
These plates move away from one another.
Divergent boundary
300
These are the slowest of all the types of waves.
Surface waves.
300
This type of volcano switches between quiet eruptions of flowing lava and violent eruptions of thick, gas-rich lava. This type of volcano has the most powerful eruptions of all.
Composite volcano
400
This floats on the asthenosphere and includes all of the crust and part of the upper mantle. It is the cool, solid portion of Earth.
Lithosphere
400
A sudden jolt where energy is released as vibrations.
Earthquake
400
These boundaries grind past each other.
Transform Fault Boundary
400
This is the point directly above the focus of an Earthquake
Epicenter
400
A volcano that emerges from a single column of magma and tends to occur in the middle of a plate.
Hot spot volcano.
500
How many major plates are there on Earth?
7
500
Hawaii was formed from this type of volcano, also is a vocab word.
Hot spot volcano
500
This is when rocks on each side of a rift are slowly pushed away from it.
Sea-floor spreading
500
This scale measures using roman numerals.
Mercalli Intensity Scale
500
What is the percentage of area of the continents and ocean floors that were formed by volcanic flows and eruptions?