We Know the White Dwarf Star Sirius B Has a Mass

question 20

Multiple Choice

We know the white dwarf star Sirius B has a mass comparable to the Sun because of

• A) its measured color
• B) its measured temperature compared to Sirius A
• C) it is part of binary star system with Sirius A.

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Definitions:

Class Midpoint

The value halfway between the lower and upper class limits.

Empirical Rule

A statistical rule stating that for a normal distribution, nearly all data falls within three standard deviations of the mean.

Bell-Shaped Distribution

Another term for the normal distribution, which is symmetric and has its highest point at the mean, decreasing in height as it moves away from the mean.

Silicon Valley

A region in California known as a global center for high technology, innovation, and social media, home to many startups and global tech companies.