The blanket of air surrounding Earth
Atmosphere
The star at the center of our solar system
The Sun
The smallest particle that still behaves like the original matter it came from
Rule by the people
Democracy
A public meeting place in Rome
Forum
Movements of air that result from local changes in temperature
Local Winds
The path one body takes in space as it revolves around another
Orbit
THe amount of space an object takes up
Volume
A widespread disease
Plague
Rule by three leaders
Triumvirate
A large body of air that has similar temperature and humidity throughout
Air mass
An imaginary line that passes through Earth's center and its North and South Poles
Axis
The dense area in the center of an atom that contains protons and neutrons
Nucleus
A term used to define outsiders of a culture
Barbarian
To officially and absolutely turn down an idea
Veto
The pattern of weather an area experiences over a long period of time
Climate
One of the shapes the moon seems to have as it orbits Earth
Moon phase
The ability of a substance to go through a chemical change
Rule by the few
Oligarchy
The ill-treatment towards someone, especially because of their religion, race, or political beliefs
Persecute
The layer of air closest to Earth's surface
The bending of light as it moves from one material to another
Refraction
The measure of how closely packed an object's atoms are
Density
The story or impact left behind by someone
A wealthy member of Roman society
Patrician