Comets and Asteroids Are

question 24

Multiple Choice

Comets and asteroids are

• A) other names for moons of the planets.
• B) primarily located within 1 AU of the Sun.
• C) all more massive than Earth's moon.
• D) material left over from the formation of the planets.

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Definitions:

Headwaters

The source of a river or stream, generally found in the high elevation areas from which the river originates.

Mouth

The location where a stream, river, or canyon ends, such as where a river enters the sea.

Cross-sectional Area

The area of an object or space as seen from a cut through the object, typically perpendicular to its longest dimension.

Volume

Volume is a measure of the amount of space that an object or substance occupies, commonly expressed in cubic units.