In the context of binary systems, a _____ is an explosion involving a white dwarf.

In the context of binary systems, a _____ is an explosion involving a white dwarf.

A) nova
B) sunspot
C) comet
D) zenith

Question 2

In the context of general relativity, time slows down in curved space-time. This is referred to as _____.

A) spatial loss
B) spatial growth
C) time dilation
D) time fragmentation

Question 3

Which of the following statements is true of medium-mass stars?

A) They never ignite their hydrogen shells and cannot become giant stars.
B) They have interiors that are completely mixed by convection.
C) In such stars, the helium ash accumulates in an inert helium core surrounded by unprocessed hydrogen.
D) During red giant stages, these stars tend to gain mass due to strong stellar winds.

Question 4

In the context of nuclear fusion in massive stars, which of the following statements is true of carbon fusion?

A) At lower temperatures than carbon fusion, nuclei of oxygen, neon, and magnesium fuse to make iron.
B) At lower temperatures than carbon fusion, iron can fuse to make silicon.
C) As carbon is exhausted, core ignition and shell ignition continue with a series of heavier nuclei as fusion fuel.
D) As soon as the carbon is exhausted in the core of massive stars, the core expands, and carbon ignition pauses.

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In the context of binary systems, a _____ is an explosion involving a white dwarf.

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