The Very Earliest Greek Theory of the Structure of the Universe

question 31

Multiple Choice

The very earliest Greek theory of the structure of the universe pictured Earth at the center with the planets revolving around it at an unchanging rate in simple circles. The Greeks later revised this theory because

• A) they didn't believe the theory was sufficiently beautiful to represent the eternal gods.
• B) certain observations led them to the conclusion that Earth has a spherical shape.
• C) they observed that the planetary motions are irregular and include such things as retrograde motion.
• D) they came to believe that the sun should be at the center of things.
• E) Actually, the Greeks never did abandon this theory--the theory was not altered until the time of Copernicus.

---

Definitions:

Spontaneous Recovery

The reappearance of a previously extinguished conditioned response after a pause.

Continuous Reinforcement

A type of learning in which a behavior is reinforced every time it occurs, leading to rapid learning.

Flooding

A psychological treatment method where individuals are exposed to a vast amount of the fearful stimulus until the fear diminishes.

Programmed Learning

An educational technique involving self-teaching with the use of specially prepared instructional materials and a step-by-step sequence that allows for self-paced learning.