The Drake Equation Attempts to Predict the

question 102

Multiple Choice

The Drake equation attempts to predict the

• A) probability that primitive life exists elsewhere in our Galaxy.
• B) number of inhabitable planets around stars in our Galaxy.
• C) number of technologically advanced civilizations in our Galaxy.
• D) number of intelligent civilizations in the universe.

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Definitions:

Independent Variable

The factor in an experiment that is intentionally altered to determine its impact on the outcome variable.

Dependent Variable

The variable in an experiment that is expected to change in response to manipulations in the independent variable.

Extraneous Variable

A variable that is not of interest in a study but can affect the outcome of the experiment, potentially leading to erroneous conclusions if not controlled.

Control Factors

Variables that are kept constant and unchanging throughout an experiment to ensure that the results are due to the independent variable being tested.