A Light-Year Is a Unit Commonly Used in Astronomy as a Measure

question 68

Multiple Choice

A light-year is a unit commonly used in astronomy as a measure of

• A) time.
• B) speed.
• C) mass.
• D) distance.
• E) acceleration.

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Definitions:

Polygraph

An instrument that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions, purported to indicate truthfulness.

Action Potentials

Electrical impulses that travel along the axon of a neuron, allowing it to communicate with other neurons or muscles.

Set Point Theory

The hypothesis that the body regulates its weight and metabolism around a genetically predetermined 'set point.'

Food Regulation

The monitoring and enforcement of policies concerning the production, distribution, and consumption of food to ensure public health and safety.