Question 1

Absolute visual magnitude is calculated at a standard distance of ____.

Accepted Answer

A)  one light year 
B)  one parsec 
C)  10 light years 
D)  10 parsecs 
E)  100 parsecs 
A)  one light year 
B)  one parsec 
C)  10 light years 
D)  10 parsecs 
E)  100 parsecs

Question 2

The Balmer series of hydrogen absorption lines in stars is located in what part of the electromagnetic spectrum?

Accepted Answer

A)  gamma ray region 
B)  ultraviolet region 
C)  visible region 
D)  infrared region 
E)  microwave region 
A)  gamma ray region 
B)  ultraviolet region 
C)  visible region 
D)  infrared region 
E)  microwave region

Question 3

A star's apparent magnitude is a measure of how bright it appears to us if it is at its actual distance.

Accepted Answer

A) True 
 B)False

Question 4

Explain the difference between apparent visual brightness and absolute visual brightness.

Accepted Answer

Apparent visual brightness is the percei

Question 5

Explain why it would be better to obtain stellar parallax for stars if we could observe from the planet Mars instead of the Earth.

Accepted Answer

Observing from Mars would give us a long

Question 6

The most accurate way to determine the surface temperature of a star is to study the pattern of emission lines from various atoms.

Accepted Answer

A) True 
 B)False

Question 7

Recent discoveries of two types of brown dwarfs have placed these stars near which spectral type of star?

Accepted Answer

A)  hotter than O stars 
B)  cooler than O stars 
C)  hotter than M stars 
D)  cooler than M stars 
E)  at exactly the same level as G stars 
A)  hotter than O stars 
B)  cooler than O stars 
C)  hotter than M stars 
D)  cooler than M stars 
E)  at exactly the same level as G stars

Question 8

The hydrogen lines of spectral type A main sequence stars are ____.

Accepted Answer

A)  the strongest 
B)  the weakest 
C)  the most narrow 
D)  useful in determining apparent magnitude 
E)  used to estimate the luminosity of the star 
A)  the strongest 
B)  the weakest 
C)  the most narrow 
D)  useful in determining apparent magnitude 
E)  used to estimate the luminosity of the star

Question 9

The vertical axis (Y-axis) of the Hertzsprung-Russell Diagram is labeled with _______________.

Accepted Answer

luminosity

Question 10

A star's absolute visual magnitude depends on its _______________ and _______________.

Accepted Answer

temperatur

Absolute visual magnitude is calculated at a standard distance of ____.

The Balmer series of hydrogen absorption lines in stars is located in what part of the electromagnetic spectrum?

A star's apparent magnitude is a measure of how bright it appears to us if it is at its actual distance.

Explain the difference between apparent visual brightness and absolute visual brightness.

Explain why it would be better to obtain stellar parallax for stars if we could observe from the planet Mars instead of the Earth.

The most accurate way to determine the surface temperature of a star is to study the pattern of emission lines from various atoms.

Recent discoveries of two types of brown dwarfs have placed these stars near which spectral type of star?

The hydrogen lines of spectral type A main sequence stars are ____.

The vertical axis (Y-axis) of the Hertzsprung-Russell Diagram is labeled with _______________.

A star's absolute visual magnitude depends on its _ and _.

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 Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

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

Filters

Exam 9: The Family of Stars

Absolute visual magnitude is calculated at a standard distance of ____.

The Balmer series of hydrogen absorption lines in stars is located in what part of the electromagnetic spectrum?

A star's apparent magnitude is a measure of how bright it appears to us if it is at its actual distance.

Explain the difference between apparent visual brightness and absolute visual brightness.

Explain why it would be better to obtain stellar parallax for stars if we could observe from the planet Mars instead of the Earth.

The most accurate way to determine the surface temperature of a star is to study the pattern of emission lines from various atoms.

Recent discoveries of two types of brown dwarfs have placed these stars near which spectral type of star?

The hydrogen lines of spectral type A main sequence stars are ____.

The vertical axis (Y-axis) of the Hertzsprung-Russell Diagram is labeled with _______________.

A star's absolute visual magnitude depends on its _______________ and _______________.

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 Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

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

Filters

A star's absolute visual magnitude depends on its _ and _.