After a Lot of Work, a Group of Graduate Students

question 19

Multiple Choice

After a lot of work, a group of graduate students has finally measured the wavelengths of many dozens of lines in the spectrum of a distant star. If a number of the lines come from molecules such as titanium oxide, the star is likely to be which spectral type:

• A) O
• B) B
• C) A
• D) M
• E) we need more information; lines from molecules can be found in stars of every spectral type

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Definitions:

Frontal Lobe

The part of the brain located at the front of each cerebral hemisphere, responsible for voluntary movement, expressive language, and managing higher level executive functions.

Broca's Aphasia

A condition resulting from damage to a specific area of the brain (Broca's area), leading to difficulty in speech production and writing but with preserved comprehension.

Speech

The expression of thoughts and feelings by articulate sounds, or the faculty of expressing thoughts and feelings by spoken sounds.

Left Frontal Lobe

A region of the brain associated with reasoning, motor skills, higher-level cognition, and expressive language.