14. which attributes retrograde motion of the planets to? 15. which states that retrograde motion of the…

14. which attributes retrograde motion of the planets to? 15. which states that retrograde motion of the planets to epicycles? which states that a planet moves fastest when it is nearest to the sun? activity 2: additional activities reflect on your learning in this module using the 3 - 2 - 1 questionnaire. three things i learned in this module: 1.

14. which attributes retrograde motion of the planets to? 15. which states that retrograde motion of the planets to epicycles? which states that a planet moves fastest when it is nearest to the sun? activity 2: additional activities reflect on your learning in this module using the 3 - 2 - 1 questionnaire. three things i learned in this module: 1.

Answer

Answer:

  1. For the question "Which attributes retrograde motion of the planets to epicycles?": The Ptolemaic system.
  2. For the question "Which states that a planet moves fastest when it is nearest to the sun?": Kepler's second - law (Law of equal areas).

Brief Explanations:

  1. In the Ptolemaic geocentric model, epicycles were used to explain the retrograde motion of planets. Planets were thought to move in small circles (epicycles) while the center of the epicycle moved in a larger circle (deferent) around the Earth.
  2. Kepler's second law states that a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. This implies that a planet moves faster when it is closer to the Sun (perihelion) and slower when it is farther away (aphelion).