How Do We Know the Expansion of the Universe Is

question 16

Multiple Choice

How do we know the expansion of the universe is accelerating?

• A) We see more of the universe every night, as the observable universe grows in size.
• B) Redshifts of distant galaxies are increasing with time, so when we repeat the measurements, the redshifts are larger.
• C) The rotation curves of galaxies indicate the universe is speeding up.
• D) We're really not that sure the expansion is accelerating, it's all just a theory.
• E) White dwarf supernova in distant galaxies are fainter than they would be if the expansion were not accelerating.

Understand the concept and process of classical conditioning.

Recognize the role of unconditioned and conditioned stimuli and responses in classical conditioning.

Differentiate between higher-order conditioning and other forms of classical conditioning.

Understand extinction and spontaneous recovery within classical conditioning.

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Definitions:

Dunbar

Refers to the Dunbar's number, a theoretical cognitive limit to the number of people with whom one can maintain stable social relationships.

Group Sizes

The number of individuals constituting a group, which can affect dynamics, interaction, and outcomes in social, educational, and work settings.

Brain Size

The physical size of the brain, often related to various factors including species, age, and cognitive abilities.

Facial Muscles

A group of striated skeletal muscles situated beneath the skin of the face, involved in facial expression.