Which of the Following Objects in the Solar System Has

question 125

Multiple Choice

Which of the following objects in the solar system has the smoothest surface relative to its radius?

• A) Io,the volcanic moon of Jupiter,whose surface is continuously coated with volcanic material
• B) Earth,with its oceans and molten interior that both allow readjustment of the surface
• C) Mercury,in view of the intense solar radiation that has melted and smoothed the surface
• D) Europa,a moon of Jupiter coated with water ice

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Definitions:

Near Point

The closest distance at which an object can be seen clearly by the eye, a measure of the eye's accommodation ability.

Accommodation

The process by which the eye changes optical power to maintain a clear image or focus on an object as its distance varies.

Elastic

Capable of returning to its original shape after being stretched or compressed, a property of certain materials.

Sclera

The white, outer layer of the eyeball that provides protection and shape.