Main-Sequence Stars Apparently Are Not Larger Than a Few Hundred

question 70

Multiple Choice

Main-sequence stars apparently are not larger than a few hundred solar masses. The reason stars of larger mass do NOT exist is that

• A) their temperatures becomes so high that their outer envelopes are expelled by the pressure of radiation inside them.
• B) the thermonuclear reactions in such stars proceed so rapidly that the stars explode.
• C) such stars contract directly to become planetlike objects.
• D) interstellar clouds of greater mass break up to become binary or multiple-star systems, not single stars.

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Definitions:

Independent Groups Design

A study setup where separate groups are tested under each condition or treatment, ensuring no participant experiences more than one condition.

Participants

Individuals who take part in a research study or experiment.

Gender × Type of School Interaction

The interactive effect that gender and the type of school (e.g., co-ed or single-gender) have on a particular outcome.

Two-Way Analysis of Variance

A statistical method used to examine the impact of two independent categorical variables on a continuous dependent variable, while also considering interactions between the variables.