An Astronomer, Examining Two Photographs of a Small Area of Sky

question 116

Multiple Choice

An astronomer, examining two photographs of a small area of sky taken 20 years apart, notices that some of the stars have moved slightly across the sky, relative to most of the other stars in the photographs. This displacement of the stars across the sky is an example of

• A) proper motion.
• B) Doppler shift.
• C) precession.
• D) radial velocity.

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Definitions:

Memory Consolidation

The process by which short-term memories are transformed into long-term memories.

Long-Term Potentiation

An enduring increase in signal transmission between two neurons that results from stimulating them synchronously, believed to be a cellular mechanism for learning and memory.

Classically Conditioned Associations

Refers to the learning process that occurs when two stimuli are repeatedly paired together; a response that is at first elicited by the second stimulus is eventually elicited by the first stimulus alone.

Cerebellum

is a part of the brain that plays a major role in motor control, balance, coordination, and fine-tuning of movements.