Question 1
This scientist wrote a book entitled
Dialogue of the Great World Systems that compared the Earth-centered system with the Sun-centered system.
◦ Sir Isaac Newton
◦ Galileo
◦ Nicolaus Copernicus
◦ Johannes Kepler
◦ Tycho Brahe
Question 2
Which of these men formulated the Law of Universal Gravitation?
◦ Johannes Kepler
◦ Galileo
◦ Nicolaus Copernicus
◦ Sir Isaac Newton
◦ Tycho Brahe