Ancient Astronomers Often Had Difficulty Explaining _____, the Occasional Westward

question 43

Multiple Choice

Ancient astronomers often had difficulty explaining _____, the occasional westward motion of the planets.

• A) parallax
• B) eccentrics
• C) retrograde motion
• D) deferents
• E) epicycles

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Definitions:

Extinction

The process by which a learned behavior diminishes or disappears as a result of the repeated absence of an unconditioned stimulus or reinforcement.

Reward Centers

Brain structures that regulate the experience of pleasure and motivate individuals towards behaviors necessary for survival, such as eating and reproduction.

Latin Word

A term originating from Latin, a classical language that has contributed to many words in modern languages, especially in science, law, and medicine.

Knowledge

Facts, information, and skills acquired through experience or education; awareness or familiarity gained by experience of a fact or situation.