Download Atmosphere – The various layers of air that surround Earth. The

Atmosphere – The various layers of air that
surround Earth. The densest atmospheric
layers are closer to Earth, and the least dense
layers are farther away from Earth.
Crust – The solid outer layer of Earth where life
is found. This is the thinnest layer of Earth.
Density – A comparison of the Mass and
Volume of an object. Density is calculated as
Mass ÷ Volume. A dense object or liquid tends
to sink in a less dense liquid.
Inner Core – The centermost layer of Earth.
This solid metal layer is the hottest and most
dense layer.
Mantle – A semi-solid layer of Earth that takes
up the most volume of Earth. This layer is
found directly below Earth’s crust.
Mixture – A combination or blend of two or
more substances that have not chemically
combined. Each substance maintains its own
identity.
Model: A diagram, or three dimensional (3-D)
representation of an object or process used to
teach a concept or idea. Models are usually
best for one or two ideas and are limited since
they do not always show detail or proper scale.
Outer Core – A liquid layer of Earth found near
the center. It is between the Mantle and Inner
Core. This layer is made of metal.
Particle – A small piece of something, typically
used to represent a small part of matter.
Seismic waves - Waves that are generated by
earthquakes and used to explain the state of
matter and density of earth’s interior layers.
Sorting – The process that separates particles
based on differences in density and/or particle
size.