The Choices Below Describe Four Hypothetical Planets

question 19

Multiple Choice

The choices below describe four hypothetical planets. Which one's surface would you expect to be most crowded with impact craters? (Assume the planets orbit a star just like the Sun and that they are all the same age as the planets in our solar system.)

• A) Size: same as the Moon. Distance from Sun: same as Mars. Rotation rate: once every 10 days.
• B) Size: twice as big as Earth. Distance from Sun: same as Mercury. Rotation rate: once every 6 months.
• C) Size: same as Mars. Distance from Sun: same as Earth. Rotation rate: once every 18 hours.
• D) Size: same as Venus. Distance from Sun: same as Mars. Rotation rate: once every 25 hours.

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Definitions:

Masters and Johnson

Researchers known for their work in the field of human sexuality and sexual response.

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A sequence of physiological and emotional changes that occur as a person becomes sexually aroused and participates in sexually stimulating activities.

Excitement

A feeling of enthusiasm and eagerness, often accompanied by an elevated physiological state.

Plateau

A state of little or no change following a period of activity or progress.