Question 1

What method is used by astronomers to infer the existence in space of a dark object with a mass of about 5 solar masses such as a black hole?

Accepted Answer

A)  The measurement of the effect of its gravitational force on a companion object in a binary system 
B)  The measurement of the gravitational redshift of spectral lines in the spectrum of the object 
C)  The estimation of the luminosity of the object and the application of the mass-luminosity relationship 
D)  The photography or imaging of a region from which no light or radiation at all appears to come 
A)  The measurement of the effect of its gravitational force on a companion object in a binary system 
B)  The measurement of the gravitational redshift of spectral lines in the spectrum of the object 
C)  The estimation of the luminosity of the object and the application of the mass-luminosity relationship 
D)  The photography or imaging of a region from which no light or radiation at all appears to come

Question 2

In addition to the visible light we detect from a supernova,also released are a flood of

Accepted Answer

A)  iron atoms. 
B)  uranium atoms. 
C)  neutrinos. 
D)  mini black holes. 
A)  iron atoms. 
B)  uranium atoms. 
C)  neutrinos. 
D)  mini black holes.

Question 3

As time progresses,the pulse rate for most solitary pulsars is

Accepted Answer

A)  slowing down because rotational energy is being used to generate the pulses. 
B)  absolutely constant: Pulsars provide ideal frequency standards or clocks. 
C)  varying periodically as the neutron star undergoes periodic expansions and contractions. 
D)  speeding up,as the neutron star slowly contracts under gravity. 
A)  slowing down because rotational energy is being used to generate the pulses. 
B)  absolutely constant: Pulsars provide ideal frequency standards or clocks. 
C)  varying periodically as the neutron star undergoes periodic expansions and contractions. 
D)  speeding up,as the neutron star slowly contracts under gravity.

Question 4

What happens to the core of a star before it explodes as a supernova?

Accepted Answer

The star's energy comes from a series of

What method is used by astronomers to infer the existence in space of a dark object with a mass of about 5 solar masses such as a black hole?

In addition to the visible light we detect from a supernova,also released are a flood of

As time progresses,the pulse rate for most solitary pulsars is

What happens to the core of a star before it explodes as a supernova?

Predicting the Motions of the Stars, Sun, and Moon

Decoding the Hidden Messages in Starlight

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Uncovering Earths Systems

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Exploring Our Galaxy

Investigating Other Galaxies

Observing the Evolution of the Universe

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Exam 12: Predicting the Violent End of the Largest Stars

What method is used by astronomers to infer the existence in space of a dark object with a mass of about 5 solar masses such as a black hole?

In addition to the visible light we detect from a supernova,also released are a flood of

As time progresses,the pulse rate for most solitary pulsars is

What happens to the core of a star before it explodes as a supernova?

Predicting the Motions of the Stars, Sun, and Moon

Decoding the Hidden Messages in Starlight

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Uncovering Earths Systems

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Exploring Our Galaxy

Investigating Other Galaxies

Observing the Evolution of the Universe

Filters