If the Universe Is Flat and Not Accelerating

question 21

Multiple Choice

If the universe is flat and not accelerating,

• A) the universe's age will be equal to 1/H.
• B) the universe's age will be equal two-thirds of 1/H.
• C) the universe it not isotropic.
• D) the density of the universe is greater than the critical density.
• E) dark energy accounts for a small fraction of the critical density of the universe.

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Definitions:

Constant

A situation or state of affairs that does not change.

Investment Model

Theory that uses three factors—satisfaction, alternatives, and investments—to explain why people stay with their long-term relationship partners.

Sunk Costs

Costs that have already been incurred and cannot be recovered, which should not influence future decisions but often do.

Alternatives

Different options or choices available in any given situation or decision-making process.