Which of the Following Has the Greatest Effect on the Expansion

question 73

Multiple Choice

Which of the following has the greatest effect on the expansion rate of today's universe?

• A) dark matter
• B) luminous matter
• C) dark energy
• D) radiation pressure
• E) nuclear decays

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Definitions:

Independent Variables

Variables in an experiment that are manipulated or controlled by the researcher to investigate their effects on dependent variables.

Numerator

The top number in a fraction that represents the part of the whole that is being considered.

Denominator

The bottom number in a fraction that shows how many equal parts the item or group is divided into.

Categorical Variable

A variable with categorical data.