What Is the MOST Important Use of Cepheid Variables for Astronomers

question 128

Multiple Choice

What is the MOST important use of Cepheid variables for astronomers?

• A) The distance to a Cepheid variable can be found very easily.
• B) The characteristics of the pulsation of a Cepheid variable can be used to investigate conditions in the core of the star.
• C) The diameter of a Cepheid variable can be found very easily.
• D) The metal content of a Cepheid variable can be found very easily.

---

Definitions:

Playing Pretend

Engaging in imaginative play, where children enact roles or stories using objects or themselves as characters.

Cope

The ability to deal effectively with something difficult or challenging.

Susan Isaacs

A psychologist and educational reformer known for her work in child development and early childhood education.

Healthy Expressions

The act of communicating feelings, thoughts, or emotions in a manner that is beneficial to one's mental, emotional, and physical well-being.