Question 1

The amount of mass lost in a star's solar wind is generally greatest during its main sequence lifetime.

Accepted Answer

A) True 
 B)False

Question 2

What physical feature of our planet is most dependent on supernova events?

Accepted Answer

A)  oceans of water 
B)  a breathable atmosphere 
C)  organic chemicals 
D)  uranium in Earth's interior 
E)  a nickel-iron core 
A)  oceans of water 
B)  a breathable atmosphere 
C)  organic chemicals 
D)  uranium in Earth's interior 
E)  a nickel-iron core

Question 3

A "nova" is the event that creates a planetary nebula.

Accepted Answer

A) True 
 B)False

Question 4

Supernovae are ____.

Accepted Answer

A)  very common: there are thousands of detectable events occurring in our galaxy each year 
B)  common: a few dozen are detected in our galaxy each year 
C)  uncommon: there are only one or two detected in our galaxy each year 
D)  rare: only one or two occur each century in our galaxy 
E)  extremely rare: only one or two are detected in the Universe each decade 
A)  very common: there are thousands of detectable events occurring in our galaxy each year 
B)  common: a few dozen are detected in our galaxy each year 
C)  uncommon: there are only one or two detected in our galaxy each year 
D)  rare: only one or two occur each century in our galaxy 
E)  extremely rare: only one or two are detected in the Universe each decade

Question 5

Explain the process that creates a nova.

Accepted Answer

A nova can occur when one star in a clos

Question 6

The first steps of evolution off the main sequence are the same for both medium-mass and high-mass stars.

Accepted Answer

A) True 
 B)False

Question 7

Match between columns
                        Premises: explosion of a massive star that has created an iron core without losing hydrogen to a binary companion
collapse and complete destruction of a white dwarf that exceeds the Chandresekhar limit
explosion of a massive star that has created an iron core after losing most of its hydrogen to a binary companion
expansion of a shell created by mass loss during the evolution of a medium-mass star
explosion from the fusion of degenerate hydrogen on the surface of a white dwarf

Accepted Answer

The Answer of Type II supernova and Type Ia supernova is...

Question 8

Supernovae are triggered because iron releases the most fusion energy of any element.

Accepted Answer

A) True 
 B)False

Question 9

What is an accretion disk?

Accepted Answer

Matter falling on to a compact

Question 10

The production of exotic ____ particle pairs in the core of a high-mass star has a significant effect on the fusion of heavy elements.

Accepted Answer

A)  electron-positron 
B)  electron-proton 
C)  proton-antiproton 
D)  neutrino-antineutrino 
E)  baryon-antibaryon 
A)  electron-positron 
B)  electron-proton 
C)  proton-antiproton 
D)  neutrino-antineutrino 
E)  baryon-antibaryon

Question 11

The supernova generated by the explosion of a high mass star fades slowly because of energy generated by ____.

Accepted Answer

A)  magnetic fields around the neutron star 
B)  disintegration of iron in the core of the star 
C)  radioactive decay of nickel formed in the expanding shell of the supernova 
D)  fusion of the remaining hydrogen in the star 
E)  matter-antimatter disintegration around the collapsed core 
A)  magnetic fields around the neutron star 
B)  disintegration of iron in the core of the star 
C)  radioactive decay of nickel formed in the expanding shell of the supernova 
D)  fusion of the remaining hydrogen in the star 
E)  matter-antimatter disintegration around the collapsed core

Question 12

How common are supernova events in our galaxy?

Accepted Answer

Supernovae are relatively rare

Question 13

The most easily visible supernova remnant is the _______________ Nebula.

Accepted Answer

The answer of The most easily visible supernova remnant is...

Question 14

Which event would you expect to be most closely associated with regions of active star formation?

Accepted Answer

A)  Type Ia supernovae 
B)  Type Ib supernovae 
C)  Type II supernovae 
D)  novae 
E)  planetary nebulae 
A)  Type Ia supernovae 
B)  Type Ib supernovae 
C)  Type II supernovae 
D)  novae 
E)  planetary nebulae

Question 15

Explain the different causes of Type Ia, Type Ib, and Type II supernovae.

Accepted Answer

A type II supernova occurs when a massiv

Question 16

A white dwarf will radiate its heat into space and become a black dwarf after a few ____.

Accepted Answer

A)  thousands of years 
B)  millions of years 
C)  hundreds of millions of years 
D)  billions of years 
E)  hundreds of billions of years 
A)  thousands of years 
B)  millions of years 
C)  hundreds of millions of years 
D)  billions of years 
E)  hundreds of billions of years

Question 17

What part of the Sun's aging process will disrupt the biosphere and evaporate the oceans of Earth?

Accepted Answer

A)  the fusion of hydrogen in the core 
B)  an increase in luminosity as the core becomes helium-enriched 
C)  the expansion of the outer layers of the Sun as a red giant 
D)  the supernova explosion caused by the collapse of the iron core 
E)  hydrogen detonation on the white dwarf remnant 
A)  the fusion of hydrogen in the core 
B)  an increase in luminosity as the core becomes helium-enriched 
C)  the expansion of the outer layers of the Sun as a red giant 
D)  the supernova explosion caused by the collapse of the iron core 
E)  hydrogen detonation on the white dwarf remnant

Question 18

Explain how planetary nebulae and white dwarfs are related to mass loss from an aging medium-mass star.

Accepted Answer

When a main sequence star becomes a red

Question 19

Supernovae are the main source of ____ in the interstellar medium.

Accepted Answer

A)  cosmic rays 
B)  helium 
C)  dust 
D)  carbon 
E)  synchotron radiation 
A)  cosmic rays 
B)  helium 
C)  dust 
D)  carbon 
E)  synchotron radiation

Question 20

Chinese astronomers observed supernovae, and called them _______________ stars.

Accepted Answer

The answer of Chinese astronomers observed supernovae, and called them...

Exam 13: Deaths of Stars

The amount of mass lost in a star's solar wind is generally greatest during its main sequence lifetime.

What physical feature of our planet is most dependent on supernova events?

A "nova" is the event that creates a planetary nebula.

Supernovae are ____.

Explain the process that creates a nova.

The first steps of evolution off the main sequence are the same for both medium-mass and high-mass stars.

Supernovae are triggered because iron releases the most fusion energy of any element.

What is an accretion disk?

The production of exotic ____ particle pairs in the core of a high-mass star has a significant effect on the fusion of heavy elements.

The supernova generated by the explosion of a high mass star fades slowly because of energy generated by ____.

How common are supernova events in our galaxy?

The most easily visible supernova remnant is the _______________ Nebula.

Which event would you expect to be most closely associated with regions of active star formation?

Explain the different causes of Type Ia, Type Ib, and Type II supernovae.

A white dwarf will radiate its heat into space and become a black dwarf after a few ____.

What part of the Sun's aging process will disrupt the biosphere and evaporate the oceans of Earth?

Explain how planetary nebulae and white dwarfs are related to mass loss from an aging medium-mass star.

Supernovae are the main source of ____ in the interstellar medium.

Chinese astronomers observed supernovae, and called them _______________ stars.

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

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