bio (life)
astro (stars)
chron (time)
dem (people)
geo (earth)
100
The study of life
What is biology
100
The study of celestial objects (things in space).
What is astronomy?
100
A timepiece.
What is chronometer?
100
A society in which people all have the right to vote.
What is a democracy?
100
The study of the Earth.
What is geology?
200
Part of the Earth where life can exist.
What is a biosphere?
200
One who takes treks in space.
What is an astronaut?
200
A timeline or the study of a period of time.
What is chronology.
200
A disease that spreads quickly.
What is an epidemic?
200
The measure of angles.
What is geometry?
300
A rocky object which orbits the sun.
What is an asteroid?
300
Make the same time; occurring at the exact same time or rate.
What is to synchronize?
300
A way of electing officials in which people vote.
What is democratic?
300
The study of the Earth's formations and environments.
What is geography?