The Term "Retrograde Motion" for a Planet Refers to the

question 339

Multiple Choice

The term "retrograde motion" for a planet refers to the

• A) temporary reversal of the planet's normal east-to-west motion past the background stars as seen from Earth.
• B) apparent motion of a planet's moon in the opposite direction to the motion of the planet itself during half of each orbit of the moon around the planet.
• C) temporary reversal of a planet's direction of spin about its axis of rotation.
• D) temporary reversal of the planet's normal west-to-east motion past the background stars as seen from Earth.

---

Definitions:

Metabolism

The biochemical processes that occur within a living organism to maintain life, involving the production and use of energy.

Organization

The arrangement of elements and resources in a structured and coordinated manner to achieve desired objectives.

Reproduction

The biological process by which new individual organisms are produced from their parents.

Growth

The process of increasing in size, a vital process of living organisms and cells.