In the Late 1800s, Kelvin and Helmholtz Suggested That the Sun

question 105

Multiple Choice

In the late 1800s, Kelvin and Helmholtz suggested that the Sun stayed hot due to gravitational contraction. What was the major drawback to this idea?

• A)It predicted that Earth would also shrink in size with time, which would make it impossible to have stable geology on our planet.
• B)It predicted that the Sun could shine for about 25 million years, but geologists had already found that Earth is much older than this.
• C)It predicted that the Sun would shrink noticeably as we watched it, but the Sun appears to be stable in size.
• D)It is physically impossible to generate heat simply by making a star shrink in size.

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Definitions:

Elasticity of Demand

A measure of how much the quantity demanded of a good responds to a change in the price of that good, indicating consumer sensitivity to price changes.

Marginal Cost

Marginal cost represents the change in total cost that arises when the quantity produced changes by one unit.

Profit-maximizing Price

The optimal price level for a good or service at which a firm can achieve the highest possible profit, given its cost structure and demand curve.

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