Which of the Following Provides Direct Evidence for the Existence

question 36

Multiple Choice

Which of the following provides direct evidence for the existence of dark matter?

• A) the rotation curves of spiral galaxies
• B) the motions of galaxies in clusters
• C) the temperature of the diffuse intergalactic gas within clusters
• D) the gravitational lensing produced by galaxy clusters
• E) all of these

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Definitions:

Group Standard

The norms or expectations that a group holds for the behavior, attitudes, and appearance of its members.

Conformity

The act of matching attitudes, beliefs, and behaviors to group norms, policies, or societal expectations.

Behavior

Everything we do that can be directly observed.

Social Facilitation Effect

The tendency for people to perform differently when in the presence of others, usually better on well-practiced tasks and worse on new tasks.