Earth's Layers
This is the thinnest, outermost rocky layer that we live on.
Crust
This type of crust is thinner but denser than the other type.
Oceanic Crust
The general term for waves of energy that travel through the Earth, usually after an earthquake.
Seismic Waves
Scientists use seismic waves as a form of "ultrasound" to study this.
Earth's Interior
This protective shield, created by the outer core, protects Earth from solar wind.
Magnetic Field
This layer is a solid ball of iron and nickel, despite being the hottest.
Inner Core
This term describes the rigid, rocky layer made of the crust and the upper mantle.
Lithosphere
These are the fastest seismic waves and can travel through both solids and liquids.
P-waves
The fact that S-waves disappear when they reach the core proves this layer is in what state of matter?
Liquid
This type of crust is thicker but less dense.
Continental Crust
Made of hot, semi-solid rock, this is the thickest layer of the Earth.
Mantle
This "plastic" or flowing layer of the mantle is what the tectonic plates move on top of.
Asthenosphere
These seismic waves are slower and can ONLY travel through solids.
S-waves
The name for the area on the opposite side of Earth from an earthquake where S-waves are not detected.
S-wave shadow zone
This process, similar to boiling water, creates currents in the mantle that move the plates.
Convection
The four main layers of the Earth, in order from the inside out.
Inner Core, Outer Core, Mantle, Crust
The inner core is solid, not liquid, because of this immense force.
Pressure
The compression motion is characteristic of this type of seismic wave.
P-wave
The existence of our magnetic field protects us from what primarily?
Solar Wind
The lithosphere is broken into these large, slowly moving pieces.
Tectonic Plates
The movement in this layer is responsible for creating Earth's magnetic field.
Outer Core
Both the inner and outer core are primarily made of these two metals.
Iron+Nickel
The movement in multiple planes of motion is a characteristic of this type of seismic wave.
S-wave
Which type of crust is most likely to slide BENEATH the other type?
Oceanic Crust (more dense)
The main property that divides the Earth into layers.
Density