The Type I Tail of a Comet Shows a Spectrum

question 58

Multiple Choice

The type I tail of a comet shows a spectrum of bright lines on a dark background of space (an emission line spectrum) .From this,one can conclude that the tail contains

• A) dust.
• B) thin gas.
• C) no atoms at all,just empty space.
• D) the spectrum does not tell which of the above is true.

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Definitions:

Cortex Controls Movement

The regions of the brain's cortex that are involved in planning, controlling, and executing voluntary movements.

Spinal Cord

The main pathway for transmitting information between the brain and the rest of the body, housed within the spinal column.

Quadriplegia

Paralysis of the legs and arms due to spinal cord injury.

C1-C2

The first two cervical vertebrae in the spine, vital for supporting the skull, enabling head movements, and protecting the spinal cord.