What Could You Use to Measure the Mass of the Dark

question 3

Multiple Choice

What could you use to measure the mass of the dark matter halo in a spiral galaxy?

• A) Hydrogen emission from H II regions in the spiral disk
• B) The velocities of satellite dwarf galaxies surrounding a spiral galaxy
• C) Absorption lines in the spectra of its globular clusters
• D) all of the above

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Definitions:

Conflict

A situation where there is a disagreement or opposition between parties, which can stem from different views, interests, or goals.

Group Size

Refers to the number of individuals making up a group, which can impact the group's dynamics, interaction, and effectiveness.

Verbal Participation

The extent to which individuals contribute to discussions or communication through spoken words.

Conjunctive Tasks

Tasks in which group performance is limited by the performance of the poorest group member.