21st Century Astronomy Chapter 07 Questions And Answers 100% Verified A+ Guaranteed

If a quantity is conserved, it means that it Choose one:A. it doesn't change. B. changes only if an external force acts.C. changes only if an internal force acts.D. can be saved for a later time. {Ans: A. it doesn't change.}Apply everything you have learned to match the patterns of planetary properties in our Solar System to the physical law or process that best explains their existence, given that the planets were formed from a spinning cloud of collapsing gas and dust. Drag and drop to match the pattern (4 items) to the corresponding law or process (A to D) below.A = More massive objects will collide with or fling more objects away during gravitational close encounters.B = More materials could condense farther from the Sun.C = Conservation of angular momentumD = Collisions will remove random orbits of particles. {Ans: A. The planets closest to the Sun are much closer to each other than the planets that are farther away B. The planets closest to the Sun are much smaller than the planets that are farther away C. All planets orbit the Sun in a roughly flat plane D. All planets orbit the Sun in the same direction}Study