Both RR Lyrae and Cepheid Variable Stars Are Stars That

question 107

Multiple Choice

Both RR Lyrae and Cepheid variable stars are stars that, when on the main sequence, wereconsidered to be:

• A)low mass.
• B)intermediate mass.
• C)high mass.
• D)zero-age main sequence.
• E)blue stragglers.

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Definitions:

Sedative

A type of medication used to soothe or calm the nervous system, often prescribed to reduce anxiety or aid sleep.

Drowsy

A state of feeling sleepy or lethargic, often leading to a decreased level of alertness and responsiveness.

Barbiturates

A category of drugs that act as central nervous system depressants and are used as sedatives, hypnotics, or anesthetics.

Ethyl Alcohol

A colorless, volatile liquid, also known as ethanol, used in alcoholic beverages, as a solvent, and as a fuel.