Question 1
The concept that Earth was a sphere was established around the time of ________.
◦ The beginning of the Middle Ages
◦ The space age
◦ The Ancient Greeks
◦ The Renaissance
Question 2
According to the Ptolemaic (Greek) system, the planets have ________ orbits.
◦ heliocentric
◦ elliptical
◦ random
◦ circular