A Type Ia Supernova Involves the Transfer of Mass from One

question 5

Multiple Choice

A type Ia supernova involves the transfer of mass from one star to a companion white dwarf? Yet, in some cases, astronomers cannot locate a star near where they see Type Ia explosions. How do they explain the absence of a companion star?

• A) they suggest that the companion star is a black hole
• B) they suggest that the companion star is always of such low mass, it's easy to miss
• C) they suggest that some type Ia supernova are caused by the collision of two white dwarfs, both of which then explode
• D) they suggest that some type Ia supernova explosions come from a single massive star where the fusion of iron causes a catastrophe and great release of neutrinos
• E) no one has any idea how to explain type Ia supernovae which do not leave behind a companion star; it's an unsolved mystery

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Definitions:

Brain Stem

The lower part of the brain that connects the cerebrum with the spinal cord and controls vital functions like breathing and heart rate.

Cerebellum

A part of the brain located under the cerebrum, responsible for coordinating voluntary movements and maintaining balance and posture.

Ventral Nerve Root

The part of a spinal nerve that emerges from the anterior portion of the spinal cord and contains motor neurons.

Lumbar Region

The section of the back and spine situated between the diaphragm and the sacrum, encompassing the lower back.