Why Did Ejecta from Impact Craters Travel Farther from Craters

question 9

Multiple Choice

Why did ejecta from impact craters travel farther from craters on the Moon than from craters on Mercury?

• A)There is more air resistance on Mercury than on the Moon
• B)The objects that struck Mercury were larger.
• C)Mercury has a larger gravity than does the Moon
• D)The curvature of the Moon is greater than that of Mercury

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Definitions:

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, and is encased in the spinal column. It is a crucial part of the central nervous system.

Somatic Nervous System

A part of the peripheral nervous system that handles voluntary control of the body's muscles and the transmission of sensory information to the central nervous system.

Curare

A plant extract used historically as a poison on arrows and darts, which acts by causing paralysis.

Acetylcholine

A neurotransmitter in the nervous system that plays a crucial role in muscle activation and memory formation.