Why Did Ptolemy Have the Planets Orbiting Earth on "Circles

question 72

Multiple Choice

Why did Ptolemy have the planets orbiting Earth on "circles upon circles" in his model of the universe?

• A) to explain why more distant planets take longer to make a circuit through the constellations of the zodiac
• B) to explain the fact that planets sometimes appear to move westward, rather than eastward, relative to the stars in our sky
• C) to explain why the Greeks were unable to detect stellar parallax
• D) To properly account for the varying distances of the planets from Earth
• E) To explain why Venus goes through phases as seen from Earth

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Definitions:

Retroactive Interference

A cognitive phenomenon where newly learned information interferes with the recall of previously learned information.

Korsakoff's Syndrome

A chronic memory disorder caused by severe deficiency of thiamine (vitamin B1), most often associated with alcoholism.

Short-Term Memory

The part of the memory system where information is stored for a short duration, typically seconds to minutes.

Long-Term Memory

The phase of memory responsible for storing information over extended periods, ranging from days to decades, allowing for retrieval of experiences, knowledge, and skills.