Question 1

Which of the following describes a star with a hydrogen-burning shell and an inert helium core?

Accepted Answer

A) It is a red giant that grows in luminosity until it dies in a planetary nebula. 
B) It is a subgiant that gradually grows dimmer as its hydrogen-burning shell expands and cools. 
C) It is a subgiant that grows in luminosity until helium fusion begins in the central core. 
D) It is what is known as a helium-burning star,which has both helium fusion in its core and hydrogen fusion in a shell. 
A) It is a red giant that grows in luminosity until it dies in a planetary nebula. 
B) It is a subgiant that gradually grows dimmer as its hydrogen-burning shell expands and cools. 
C) It is a subgiant that grows in luminosity until helium fusion begins in the central core. 
D) It is what is known as a helium-burning star,which has both helium fusion in its core and hydrogen fusion in a shell.

Question 2

The ultimate fate of our Sun is to

Accepted Answer

A) explode in a supernova. 
B) become a white dwarf that will slowly cool with time. 
C) become a rapidly spinning neutron star. 
D) become a black hole. 
A) explode in a supernova. 
B) become a white dwarf that will slowly cool with time. 
C) become a rapidly spinning neutron star. 
D) become a black hole.

Which of the following describes a star with a hydrogen-burning shell and an inert helium core?

The ultimate fate of our Sun is to

A Modern View of the Universe

Discovering the Universe for Yourself

The Science of Astronomy

Making Sense of the Universe: Understanding Motion, Energy, and Gravity

Light and Matter: Reading Messages from the Cosmos

Telescopes: Portals of Discovery

Our Planetary System

Formation of the Solar System

Planetary Geology: Earth and the Other Terrestrial Worlds

Planetary Atmospheres: Earth and the Other Terrestrial Worlds

Jovian Planet Systems

Asteroids, Comets, and Dwarf Planets: Their Nature, Orbits, and Impacts

Other Planetary Systems: The New Science of Distant Worlds

Our Star

Surveying the Stars

Star Birth

The Bizarre Stellar Graveyard

Our Galaxy

Galaxies and the Foundations of Modern Cosmology

Galaxy Evolution

The Birth of the Universe

Dark Matter, Dark Energy, and the Fate of the Universe

Life in the Universe

Celestial Timekeeping and Navigation

Space and Time

Spacetime and Gravity

Building Blocks of the Universe

Filters

Exam 17: Star Stuff

Which of the following describes a star with a hydrogen-burning shell and an inert helium core?

The ultimate fate of our Sun is to

A Modern View of the Universe

Discovering the Universe for Yourself

The Science of Astronomy

Making Sense of the Universe: Understanding Motion, Energy, and Gravity

Light and Matter: Reading Messages from the Cosmos

Telescopes: Portals of Discovery

Our Planetary System

Formation of the Solar System

Planetary Geology: Earth and the Other Terrestrial Worlds

Planetary Atmospheres: Earth and the Other Terrestrial Worlds

Jovian Planet Systems

Asteroids, Comets, and Dwarf Planets: Their Nature, Orbits, and Impacts

Other Planetary Systems: The New Science of Distant Worlds

Our Star

Surveying the Stars

Star Birth

The Bizarre Stellar Graveyard

Our Galaxy

Galaxies and the Foundations of Modern Cosmology

Galaxy Evolution

The Birth of the Universe

Dark Matter, Dark Energy, and the Fate of the Universe

Life in the Universe

Celestial Timekeeping and Navigation

Space and Time

Spacetime and Gravity

Building Blocks of the Universe

Filters