The Diameter of a Typical Planetary Nebula,after 10,000 Years of Expansion,is

question 173

Multiple Choice

The diameter of a typical planetary nebula,after 10,000 years of expansion,is:

• A) about 1000 ly.
• B) about 1 AU.
• C) only about 3 to 5 stellar diameters.
• D) a few light-years.

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Definitions:

Cross Section

A diagram or slice that shows the internal structure of something, often used in geological contexts to illustrate the arrangement of rock layers.

Calderas

Large, circular depressions formed when a volcano collapses into a void left after the eruption and evacuation of its magma chamber.

Folds

Folds are bends in rock layers or strata, resulting from compressional forces and pressure, integral to the study of structural geology and mountain building.

Iron-Ore Deposits

Concentrations of iron minerals within the Earth that can be mined and processed to extract iron metal.