The Age of a Cluster Can Be Found by

question 90

Multiple Choice

The age of a cluster can be found by

• A) observing its position in the sky with respect to the Sun.
• B) measuring its speed of motion relative to the Sun.
• C) carrying out a number count of the stars in the cluster.
• D) determining the turnoff point on the main sequence of its H-R diagram.

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Definitions:

SARS

Severe Acute Respiratory Syndrome, a contagious respiratory illness caused by a virus in the coronavirus family that first emerged in 2002-2003.

Contagious

Able to be passed from one person to another via direct or indirect contact.

Fatal

Resulting in death or causing the end of life; extremely serious or deadly.

Alveoli

Minute pulmonary sacs essential for the oxygen and carbon dioxide trade-off.