Chapter 2 - 2.4

32. When it comes to our place in the solar system today, which model do we accept?

b. heliocentric

38. According to the geocentric view, everything in the heavens had to go around the Earth, which was the center of the universe. What objects did Galileo discover with his telescope that clearly didn't go around the Earth?

b. moons around the planet Jupiter

34. The scientist who first devised experimental tests to demonstrate the validity of the heliocentric model of the solar system was

c. Galileo

36. In what fundamental way did the work of Galileo differ from his predecessors who had thought about the sky?

c. Galileo used instruments and experiments to show him what nature was doing, instead of relying on pure logic

37. In Copernicus' day, people were worried about the idea that the celestial sphere seemed to turn around us once a day because the Earth rotates. They argued that if the Earth were to rotate so fast, it should fly apart. According to our textbook, what was one response Copernicus had to this worry?

d. Copernicus argued that the idea that the much larger celestial sphere is turning once a day (and the Earth is not) meant that the celestial sphere would be torn apart even more

33. The Renaissance astronomer who wrote the pioneering book that suggested the Earth probably orbits the Sun (instead of the other way around) was:

e. Copernicus

35. Which of the following was NOT done by Galileo Galilei?

e. explaining retrograde motion with the heliocentric hypothesis