Dust Grains Released by the Melting and Sublimation of Ice

question 180

Multiple Choice

Dust grains released by the melting and sublimation of ice in a comet nucleus

• A) drift away from the Sun along magnetic field lines, outlining the structure of the field.
• B) become a straight, highly structured, and very variable tail blown away from the comet by the solar wind.
• C) become a cloud around the nucleus, the coma, scattering sunlight very efficiently at blue wavelengths.
• D) become a uniform, curved tail moving away from the comet under radiation pressure from sunlight.

---

Definitions:

Hyperthermia

A condition characterized by an abnormally high body temperature, which can result from environmental factors or illnesses.

Premature Birth

The birth of a baby at less than 37 weeks’ gestational age, which can lead to health issues due to underdeveloped organs.

Social-Cognitive Theory

A theoretical perspective that emphasizes learning through observing the behaviors of others and the outcomes of those behaviors.

Hypnosis

A trance-like state characterized by increased focus, concentration, and suggestibility.