A Proplyd Is

question 88

Multiple Choice

A proplyd is

• A) a primitive organism thought to exist on Jupiter's moon,Europa.
• B) a protoplanetary disk,such as is observed around some stars in the Orion nebula,for example.
• C) any planet of greater mass than Jupiter.
• D) a planet orbiting a star beyond the Sun.

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Definitions:

Upper Air Currents

Large-scale movements of air that occur in the upper part of the atmosphere, influencing weather patterns and climate.

Air Convergence

The meeting and combining of airflow from different directions, often leading to cloud formation and precipitation.

Air Divergence

The movement of air away from a particular region, often associated with descending air and fair weather.

Trough Of Low Pressure

A long, extended region in the atmosphere where the atmospheric pressure is lower than the surrounding area.