Question 1

Atoms that have the same number of protons but a different number of neutrons are called

Accepted Answer

A)  ions. 
B)  molecules 
C)  atomic pairs. 
D)  nuclear pairs. 
E)  isotopes. 
A)  ions. 
B)  molecules 
C)  atomic pairs. 
D)  nuclear pairs. 
E)  isotopes.

Question 2

To know the element name on the periodic table, you need to know the number of neutrons in the nucleus.

Accepted Answer

A) True 
 B)False

Question 3

The longer the wavelength, the bluer and brighter the star appears.

Accepted Answer

A) True 
 B)False

Question 4

When an electron transitions from a higher orbital level to a lower orbital level, a photon is ______.

Accepted Answer

A)  absorbed 
B)  transitioned to somewhere else in that same orbit 
C)  emitted 
D)  None of the other choices are correct as a photon is not a product of or source to the transition. 
A)  absorbed 
B)  transitioned to somewhere else in that same orbit 
C)  emitted 
D)  None of the other choices are correct as a photon is not a product of or source to the transition.

Question 5

The Sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the Sun occur?

Accepted Answer

A)  5800 nm 
B)  300 nm 
C)  174 nm 
D)  500 nm 
E)  3000 nm 
A)  5800 nm 
B)  300 nm 
C)  174 nm 
D)  500 nm 
E)  3000 nm

Question 6

Which of the following cannot be determined from the spectrum of a star?

Accepted Answer

A)  chemical composition 
B)  surface temperature 
C)  radial (along line of sight) velocity 
D)  tangential (perpendicular to line of sight) velocity 
E)  radial (along line of sight) velocity. 
A)  chemical composition 
B)  surface temperature 
C)  radial (along line of sight) velocity 
D)  tangential (perpendicular to line of sight) velocity 
E)  radial (along line of sight) velocity.

Question 7

Which one of the hydrogen atoms below is EMITTING light? The electron jumps from the

Accepted Answer

A)  second energy level to first (most bound). 
B)  third energy level to fourth. 
C)  fourth energy level to fifth. 
D)  second energy level to third. 
E)  first energy level to second. 
A)  second energy level to first (most bound). 
B)  third energy level to fourth. 
C)  fourth energy level to fifth. 
D)  second energy level to third. 
E)  first energy level to second.

Question 8

Two or more bound atoms is called a ________________.

Accepted Answer

The answer of Two or more bound atoms is called...

Question 9

The temperature of an object from which no heat energy can be extracted is

Accepted Answer

A)  0 ° F. 
B)  0 ° C. 
C)  0 K. 
D)  100 K. 
E)  100 ° C. 
A)  0 ° F. 
B)  0 ° C. 
C)  0 K. 
D)  100 K. 
E)  100 ° C.

Question 10

How much energy is radiated each second by one square meter of a star whose temperature is 10,000 K? Note: σ in the Stefan-Boltzmann law is equal to   .

Accepted Answer

A)  5.67 × 1012 J 
B)  5.67 × 108 J 
C)  5.67 × 104 J 
D)  300 nm 
E)  300,000,000 nm 
A)  5.67 × 1012 J 
B)  5.67 × 108 J 
C)  5.67 × 104 J 
D)  300 nm 
E)  300,000,000 nm

Question 11

Blue stars are hotter than red stars.

Accepted Answer

A) True 
 B)False

Question 12

Blue stars emit most of their energy at shorter wavelengths than red stars.

Accepted Answer

A) True 
 B)False

Question 13

The lowest energy level in an atom is

Accepted Answer

A)  the absolute zero temperature. 
B)  the ground state. 
C)  the ionization level. 
D)  responsible for Doppler shifts. 
E)  the energy level from which the Paschen series of hydrogen originates. 
A)  the absolute zero temperature. 
B)  the ground state. 
C)  the ionization level. 
D)  responsible for Doppler shifts. 
E)  the energy level from which the Paschen series of hydrogen originates.

Question 14

____ has a negative charge and a mass about 2000 times smaller than a proton.

Accepted Answer

A)  A neutron 
B)  An electron 
C)  A molecule 
D)  A nucleus 
E)  An isotope 
A)  A neutron 
B)  An electron 
C)  A molecule 
D)  A nucleus 
E)  An isotope

Question 15

Bluer stars are brighter than redder stars of the same size. Assume both are typical stars.

Accepted Answer

A) True 
 B)False

Question 16

If temperature refers to the intensity of agitation then absolute zero is no agitation.

Accepted Answer

A) True 
 B)False

Question 17

The Doppler effect states that the motion of any object can

Accepted Answer

A)  shift the wavelength of spectral lines. 
B)  change the speed of light emitted from the object. 
C)  enhance the chemical composition of the object. 
D)  make the object appear hotter. 
E)  make the object appear cooler. 
A)  shift the wavelength of spectral lines. 
B)  change the speed of light emitted from the object. 
C)  enhance the chemical composition of the object. 
D)  make the object appear hotter. 
E)  make the object appear cooler.

Question 18

Part of astrophysics is understanding the history of celestial objects.

Accepted Answer

A) True 
 B)False

Question 19

Absolute zero is

Accepted Answer

A)  zero degrees Celsius. 
B)  the temperature at which atoms have no remaining energy from which we can extract heat. 
C)  the temperature at which water freezes. 
D)  zero degrees Celsius and the temperature at which water freezes. 
E)  none of the others. 
A)  zero degrees Celsius. 
B)  the temperature at which atoms have no remaining energy from which we can extract heat. 
C)  the temperature at which water freezes. 
D)  zero degrees Celsius and the temperature at which water freezes. 
E)  none of the others.

Question 20

If you move an electron in an atom from a low energy level to a higher energy level within the atom, we say that the atom is

Accepted Answer

A)  in the ground state. 
B)  ionized. 
C)  dissociated. 
D)  in an excited state. 
E)  neutralized. 
A)  in the ground state. 
B)  ionized. 
C)  dissociated. 
D)  in an excited state. 
E)  neutralized.

Atoms that have the same number of protons but a different number of neutrons are called

To know the element name on the periodic table, you need to know the number of neutrons in the nucleus.

The longer the wavelength, the bluer and brighter the star appears.

When an electron transitions from a higher orbital level to a lower orbital level, a photon is ______.

The Sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the Sun occur?

Which of the following cannot be determined from the spectrum of a star?

Which one of the hydrogen atoms below is EMITTING light? The electron jumps from the

Two or more bound atoms is called a ________________.

The temperature of an object from which no heat energy can be extracted is

How much energy is radiated each second by one square meter of a star whose temperature is 10,000 K? Note: σ in the Stefan-Boltzmann law is equal to .

Blue stars are hotter than red stars.

Blue stars emit most of their energy at shorter wavelengths than red stars.

The lowest energy level in an atom is

____ has a negative charge and a mass about 2000 times smaller than a proton.

Bluer stars are brighter than redder stars of the same size. Assume both are typical stars.

If temperature refers to the intensity of agitation then absolute zero is no agitation.

The Doppler effect states that the motion of any object can

Part of astrophysics is understanding the history of celestial objects.

Absolute zero is

If you move an electron in an atom from a low energy level to a higher energy level within the atom, we say that the atom is

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 6: Atoms and Spectra

Atoms that have the same number of protons but a different number of neutrons are called

To know the element name on the periodic table, you need to know the number of neutrons in the nucleus.

The longer the wavelength, the bluer and brighter the star appears.

When an electron transitions from a higher orbital level to a lower orbital level, a photon is ______.

The Sun has a surface temperature of approximately 5800 K. At what wavelength does the maximum energy radiated by the Sun occur?

Which of the following cannot be determined from the spectrum of a star?

Which one of the hydrogen atoms below is EMITTING light? The electron jumps from the

Two or more bound atoms is called a ________________.

The temperature of an object from which no heat energy can be extracted is

How much energy is radiated each second by one square meter of a star whose temperature is 10,000 K? Note: σ in the Stefan-Boltzmann law is equal to .

Blue stars are hotter than red stars.

Blue stars emit most of their energy at shorter wavelengths than red stars.

The lowest energy level in an atom is

____ has a negative charge and a mass about 2000 times smaller than a proton.

Bluer stars are brighter than redder stars of the same size. Assume both are typical stars.

If temperature refers to the intensity of agitation then absolute zero is no agitation.

The Doppler effect states that the motion of any object can

Part of astrophysics is understanding the history of celestial objects.

Absolute zero is

If you move an electron in an atom from a low energy level to a higher energy level within the atom, we say that the atom is

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters