Question 1

What produces a type-I supernova?

Accepted Answer

A)  the collapse of the core of a massive star 
B)  the helium flash blows apart a giant's core 
C)  mass transfer onto a white dwarf pushing it over 1.4 solar masses 
D)  a nova igniting a helium flash in its red giant companion 
E)  the radioactive decay of nickel 56 into cobalt 56 into iron 56 
A)  the collapse of the core of a massive star 
B)  the helium flash blows apart a giant's core 
C)  mass transfer onto a white dwarf pushing it over 1.4 solar masses 
D)  a nova igniting a helium flash in its red giant companion 
E)  the radioactive decay of nickel 56 into cobalt 56 into iron 56

Question 2

In neutronization of the core,a proton and an electron make a neutron and a(n):

Accepted Answer

A)  positron. 
B)  muon. 
C)  neutrino. 
D)  pion. 
E)  antineutron. 
A)  positron. 
B)  muon. 
C)  neutrino. 
D)  pion. 
E)  antineutron.

Question 3

A carbon-detonation supernova starts out as a white dwarf in a close binary system.

Accepted Answer

A) True 
 B)False

Question 4

Which statement about young stars is FALSE?

Accepted Answer

A)  They contain a larger fraction of heavy elements than previous generations. 
B)  They are born in a dustier environment than earlier generations. 
C)  They are more likely to have planets forming with them than earlier generations. 
D)  The high mass stars will be more likely to produce heavier elements as they evolve. 
E)  Being young, they will have more pure hydrogen than earlier generations. 
A)  They contain a larger fraction of heavy elements than previous generations. 
B)  They are born in a dustier environment than earlier generations. 
C)  They are more likely to have planets forming with them than earlier generations. 
D)  The high mass stars will be more likely to produce heavier elements as they evolve. 
E)  Being young, they will have more pure hydrogen than earlier generations.

What produces a type-I supernova?

In neutronization of the core,a proton and an electron make a neutron and a(n):

A carbon-detonation supernova starts out as a white dwarf in a close binary system.

Which statement about young stars is FALSE?

Charting the Heavens: The Foundations of Astronomy

The Copernican Revolution: The Birth of Modern Science

Radiation: Information from the Cosmos

Spectroscopy: The Inner Workings of Atoms

Telescopes: The Tools of Astronomy

The Solar System: Comparative Planetology and Formation Models

Earth: Our Home in Space

The Moon and Mercury: Scorched and Battered Worlds

Venus: Earth's Sister Planet

Mars: A Near Miss for Life?

Jupiter: Giant of the Solar System

Saturn: Spectacular Rings and Mysterious Moons

Uranus and Neptune: The Outer Worlds of the Solar System

Solar System Debris: Keys to Our Origin

Exoplanets: Planetary Systems Beyond Our Own

The Sun: Our Parent Star

The Stars: Giants,Dwarfs,and the Main Sequence

The Interstellar Medium: Gas and Dust among the Stars

Star Formation: A Traumatic Birth

Stellar Evolution: The Life and Death of a Star

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: A Spiral in Space

Galaxies: Building Blocks of the Universe

Galaxies and Dark Matter: The Large-Scale Structure of the Cosmos

Cosmology: The Big Bang and the Fate of the Universe

The Early Universe: Toward the Beginning of Time

Life in the Universe: Are We Alone?

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Exam 21: Stellar Explosions: Novae,Supernovae,and the Formation of the Elements

What produces a type-I supernova?

In neutronization of the core,a proton and an electron make a neutron and a(n):

A carbon-detonation supernova starts out as a white dwarf in a close binary system.

Which statement about young stars is FALSE?

Charting the Heavens: The Foundations of Astronomy

The Copernican Revolution: The Birth of Modern Science

Radiation: Information from the Cosmos

Spectroscopy: The Inner Workings of Atoms

Telescopes: The Tools of Astronomy

The Solar System: Comparative Planetology and Formation Models

Earth: Our Home in Space

The Moon and Mercury: Scorched and Battered Worlds

Venus: Earth's Sister Planet

Mars: A Near Miss for Life?

Jupiter: Giant of the Solar System

Saturn: Spectacular Rings and Mysterious Moons

Uranus and Neptune: The Outer Worlds of the Solar System

Solar System Debris: Keys to Our Origin

Exoplanets: Planetary Systems Beyond Our Own

The Sun: Our Parent Star

The Stars: Giants,Dwarfs,and the Main Sequence

The Interstellar Medium: Gas and Dust among the Stars

Star Formation: A Traumatic Birth

Stellar Evolution: The Life and Death of a Star

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: A Spiral in Space

Galaxies: Building Blocks of the Universe

Galaxies and Dark Matter: The Large-Scale Structure of the Cosmos

Cosmology: The Big Bang and the Fate of the Universe

The Early Universe: Toward the Beginning of Time

Life in the Universe: Are We Alone?

Filters