Uranus and Neptune Are Similar in Size and Have Similar

question 54

Multiple Choice

Uranus and Neptune are similar in size and have similar atmospheres,but Neptune is significantly farther away from the Sun than is Uranus,by a ratio of about 30/19.What conclusion can be reached,therefore,from the fact that Neptune's temperature is about the same as Uranus's?

• A) Neptune's atmosphere must contain a more effective greenhouse gas to maintain more solar energy.
• B) Neptune must have a significant source of internal energy or heat.
• C) The solar wind is able to penetrate to Neptune's cloud tops and deposit energy there,whereas Uranus's magnetic field deflects the solar wind.
• D) Neptune is being distorted,therefore heating more than Uranus by tidal effects from Jupiter and Saturn.

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Definitions:

Average Product

The output per unit of input, calculated by dividing total production by the number of units of input.

Marginal Product

The additional output that is produced by adding one more unit of a particular input, keeping other inputs constant.

Short-Run Curve

Refers to a period in economics during which at least one factor of production is fixed, affecting production and cost decisions.

Marginal Product

The change in output resulting from employing one more unit of a particular input while holding all other inputs constant.