Which of These Techniques Has NOT Provided a Means by Which

question 74

Multiple Choice

Which of these techniques has NOT provided a means by which astronomers can infer the presence of dark matter in the universe?

• A) measurement of the orbital speeds of stars near possible supermassive black holes at the centers of galaxies
• B) measurement of the orbital speeds of stars in the outer regions of galaxies
• C) observation of the bending of light (gravitational lensing) from remote galaxies as it passes through intervening clusters of galaxies
• D) measurement of the line-of-sight speeds of individual galaxies in clusters of galaxies

Identify the key elements that distinguish cultures from one another.

Recognize the importance of language in culture and its role in transmitting cultural heritage.

Acknowledge cultural dimensions, including norms, values, and folkways.

Learn about the stages and effects of culture shock.

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Definitions:

Third-variable Problem

A scenario in research where an unmeasured variable causes or influences both variables of interest, potentially misleading interpretations of a correlation or relationship.

Causal Relationship

A connection between two events or states where one event is understood to be a direct result of the other.

Confounding Variable

An external variable that influences both the dependent and independent variables in a study, potentially skewing the results.

Observational Study

A study in which the researcher observes and records behavior or outcomes without manipulating variables.