Because White Dwarfs Are Small, as Their Name Implies, They

question 41

Multiple Choice

Because white dwarfs are small, as their name implies, they are hard to see. What is a way astronomers have to find white dwarfs that distinguishes them from main sequence stars?

• A) because white dwarfs get really hot, we can search for their ultraviolet radiation
• B) because white dwarfs all have planets around them, we can use the transit method to find them
• C) because white dwarfs are making complex molecules in their outer regions, we can search for them with radio telescopes
• D) all white dwarfs pulsate (they get brighter and dimmer) every few minutes and this regular change in brightness is easy to notice
• E) there is no way to distinguish white dwarfs from other dim stars. That's why we only know two or three white dwarfs in the sky.
• Section 23.2: The Evolution of Massive Stars: An Explosive Finish

---

Definitions:

Eating Disorders

Mental disorders that are characterized by extreme over- or under-control of eating and behaviors intended to control weight such as compulsive exercise, dieting, or purging.

Depression

A common and severe medical illness that negatively affects how you feel, the way you think, and how you act, leading to feelings of sadness and/or a loss of interest in activities.

Anxiety

a feeling of worry, nervousness, or unease about something with an uncertain outcome, often reflecting a concern over potential future events.

Risky Activities

Behaviors or actions that involve a significant degree of danger or potential harm to oneself or others.