Which of the Following Cannot Be Determined from the Spectrum

question 11

Multiple Choice

Which of the following cannot be determined from the spectrum of a star?

• A) chemical composition
• B) surface temperature
• C) radial (along line of sight) velocity
• D) tangential (perpendicular to line of sight) velocity
• E) both c and d

---

Definitions:

Caffeine

A stimulant compound found in coffee, tea, chocolate, and many soft drinks, which acts on the central nervous system to reduce tiredness and improve concentration and focus.

Alertness

The state of being watchful and prompt to meet danger or emergency, or to discover and avoid errors.

Neurochemical Properties

Characteristics and behaviors of the chemicals in the nervous system that influence brain function and behavior.

Nicotine

A potent chemical found in tobacco plants that acts as a stimulant and is highly addictive, commonly consumed through smoking cigarettes.