The Twinkling of Starlight and the Focusing of Images by Lenses

question 12

Multiple Choice

The twinkling of starlight and the focusing of images by lenses are both due to of light.

• A) refraction
• B) reflection
• C) transmission
• D) polarization
• E) aberration

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Definitions:

Ghrelin

A hormone produced by the stomach that stimulates hunger and food intake, playing a significant role in body weight and metabolism.

Hunger-triggering

Prompting or causing a sensation of the need to eat.

Ventromedial Hypothalamus

A region of the brain involved in satiety, regulating hunger, and aiding in the metabolism of glucose and fats.

Lateral Hypothalamus

A region of the brain involved in hunger and thirst regulation.