The Mass of All of Saturn's Bright Rings Is Comparable

question 12

Multiple Choice

The mass of all of Saturn's bright rings is comparable to the mass of

• A) a small comet.
• B) a small icy moon.
• C) Earth's Moon.
• D) Mars.
• E) Venus.

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Definitions:

Friction

The resistance encountered when one object is moved in contact with another.

Pressure

The force exerted per unit area on the surface of an object, often measured in atmospheres, Pascals, or mmHg.

Callus

Thickened area of skin caused by repeated friction or pressure, or the healing tissue over a bone fracture.

Cyanosis

A bluish or purplish discoloration of the skin and mucous membranes due to insufficient oxygen in the blood.