What Is Our Current Understanding of the Expansion of the Universe

question 65

Multiple Choice

What is our current understanding of the expansion of the universe?

• A) The universe is expanding too slowly to overcome its mutual gravitational attraction, and thus it will eventually stop expanding and eventually collapse.
• B) The universe is expanding at exactly its escape speed. Thus, it will continue to slow forever and stop at an infinite time in the future.
• C) The universe is expanding at a rate greater than its escape speed. Thus, it will continue to expand forever, slowing constantly, without ever stopping.
• D) None of the answers is correct.

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Definitions:

Demand for Goods

The desire, willingness, and ability of consumers to purchase goods at a given price over a specific time period.

Unemployment Insurance

A government program that partially protects workers’ incomes when they become unemployed.

Multiplier

The factor by which an initial change in spending will alter total economic output, usually in the context of fiscal or monetary policy.

MPC

Marginal Propensity to Consume, which is the proportion of additional income that a consumer spends on goods and services as opposed to saving it.