Earth's Layers
The middle layer of the three compositional layers of earth.
What is the mantle?
This theory explains how large pieces of Earth's outermost layer moves and changes shape.
What is the theory of plate tectonics?
Vents of fissures on Earth's surface where magma and gas are expelled.
What are volcanoes?
Movement or trembling of the ground by a sudden release of energy when rocks move along a fault.
What is an earthquake?
The outermost compositional layer of the earth.
What is the core?
The bending of rock layers due to stress.
What is folding?
This is magma that is above the ground.
What is lava?
The point at which an earthquake originates.
What is the focus?
The outermost physical layer of the earth.
What is the lithosphere?
This crust is thicker and less dense than oceanic crust.
What is continental crust?
The release of pyroclastic materials is associated with this type of volcano.
What is an explosive eruption?
The point on EArth's surface directly above the focus.
What is the epicenter?
This core is solid.
What is the inner core?
Plates move away from each other at this type of boundary.
What are divergent boundaries?
This process causes hot spots in the Pacific Ocean which caused the volcanoes that created the Hawaii Islands.
What is convection?
These are two scales used to measure earthquakes.
What are the Richter and the Moment Magnitude scale.
The lithosphere is broken up into plates that "float" on this physical layer.
What is the asthenosphere?
The line the fault blocks move along.
What is the fault line?
Mountain building, volcanism, subduction, and large earthquakes occur aaah these boundaries.
What is convergent boundaries?
A wave of energy that travels through earth and away from an earthquake in all directions.
What are seismic waves?