Based Purely on Its Size, Which of These Planetary Bodies

question 69

Multiple Choice

Based purely on its size, which of these planetary bodies is least geologically active?

• A) Mercury
• B) Venus
• C) Earth
• D) Mars
• E) Io

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Definitions:

Convection Cell

The movement of material in an elliptical to roughly circular loop by the process of convection; movement is driven by differences in density, especially those caused by temperature variations.

Ethanol

A volatile, flammable, colorless liquid alcohol, used as a biofuel and in the manufacture of various chemicals and pharmaceuticals.

Food Supplies

The total amount of food available or stocked for consumption and distribution to meet the demands of the population.

Green Globes

A certification program focused on improving environmental performances of buildings through sustainable design and operations.