You Observe a Cepheid Variable Star in a Nearby Galaxy

question 24

Multiple Choice

You observe a Cepheid variable star in a nearby galaxy. How would you determine its distance?

• A) apply the peak colour-magnitude relation
• B) apply the period-luminosity relation
• C) apply the Hubble Law
• D) measure the parallax

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Definitions:

Functional Play

A type of play mainly observed in children, involving activities that use repetitive muscle movements, often focusing on the use of objects.

Lego

A brand of plastic construction toys that are interlocking, allowing for the building of various objects and structures.

Skipping

Skipping can refer either to a physical jumping movement often seen in children's play or to omitting or bypassing something in a sequence.

Jumping

A physical action involving propelling oneself off the ground using one's legs, which is a fundamental motor skill developing in early childhood.