If the Stars at the Turnoff Point of a Cluster

question 75

Multiple Choice

If the stars at the turnoff point of a cluster have a mass of 3 M , what is the age of the cluster?

• A) 3.0 × 10¹⁰ years
• B) 3.3 × 10⁹ years
• C) 6.4 × 10⁸ years
• D) 1.6 × 10¹¹ years
• E) The age of a star cluster cannot be determined from the mass of stars at the turnoff point.

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Definitions:

Conglomerate

A coarse-grained sedimentary rock composed of rounded fragments or clasts of pre-existing rocks.

Basalt

A dark, fine-grained volcanic rock that is formed from the rapid cooling of basaltic lava at the Earth's surface.

Clasts

Fragments of geological detritus, such as minerals and rocks, formed by weathering and erosion.

Unconformity

A geological surface that represents a gap in the geological record, often due to erosion or lack of deposition over a period of time.