Astro 101 Exam 1 Questions And Answers 2024( A+ Graded 100% Verified).

gravitational force is an ___ force {Ans: attractive}Kepler's Second Law {Ans: Planets sweep out equal areas in equal times, planets move slowest at aphelion}according to newton's law of universal gravitation (force equals gravitational force times mass one multiplied by mass two divided by radius squared), if the distance r is doubled, the force is {Ans: one fourth of the original value}An observer is located in Santiago, Chile. Which parts of the celestial sphere would be above the horizon? {Ans: the celestial equator and the south celestial pole}the length of time it takes the sun to return to the same position in the sky is a {Ans: solar day}What do the prefixes kilo, milli, deci, micro, and centi designate? {Ans: 10^3, 10^-3, 10^-1, 10^-6, 10^-2}