Not Counting Earth,the Number of Planets Known to the Ancients

question 258

Multiple Choice

Not counting Earth,the number of planets known to the ancients was:

• A) four.
• B) five.
• C) seven.
• D) eight.

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Definitions:

The Experiment

A methodological approach in research to test hypotheses and establish causation by manipulating variables and observing the effects on a subject or system.

Correlational Research

A research methodology that examines the relationship between variables, determining how they may change together but not cause one another.

Positive Expectations

The belief that good things will happen in the future, which can influence behavior and attitudes in a positive way.

Placebo Effect

A beneficial effect produced by a placebo drug or treatment, which cannot be attributed to the properties of the placebo itself, and must therefore be due to the patient's belief in that treatment.