Question 1

Explain how Bohr's model creates emission and absorption lines in the spectrum.

Accepted Answer

Bohr's model has the electron orbitals q

Question 2

What is meant by the wavelength of light? By its frequency? Explain how they are related to each other.

Accepted Answer

The wavelength is the distance between s

Question 3

Radio astronomy uses ________ to achieve better resolution than optical telescopes.

Accepted Answer

The answer of Radio astronomy uses ________ to achieve better...

Question 4

The spectral lines of each element are distinctive to that element, whether we are looking at emission or absorption lines.

Accepted Answer

A) True 
 B)False

Question 5

What is TRUE of a blackbody?

Accepted Answer

A)  It appears black to us, regardless of its temperature. 
B)  Its energy is not a continuum. 
C)  Its energy peaks at the wavelength determined by its temperature. 
D)  If its temperature doubled, the peak in its curve would be doubled in wavelength. 
E)  It has a complete absence of thermal energy. 
A)  It appears black to us, regardless of its temperature. 
B)  Its energy is not a continuum. 
C)  Its energy peaks at the wavelength determined by its temperature. 
D)  If its temperature doubled, the peak in its curve would be doubled in wavelength. 
E)  It has a complete absence of thermal energy.

Question 6

Molecular spectra, like elemental ones, involve only the vibration of the particles.

Accepted Answer

A) True 
 B)False

Question 7

Why doesn't the Hubble Space Telescope need adaptive optics?

Accepted Answer

Adaptive optics correct poor s

Question 8

State the relationship between photon energy, frequency, and wavelength.

Accepted Answer

The higher the frequency, the

Question 9

Observations in the X-ray portion of the spectrum are routinely done from the surface of the Earth.

Accepted Answer

A) True 
 B)False

Question 10

As white light passes through a prism, the red (longer) wavelengths bend less than the blue (shorter) wavelengths, so forming the rainbow of colors.

Accepted Answer

A) True 
 B)False

Question 11

The light-gathering power of a telescope varies with the ________ of the diameter of the lens or mirror.

Accepted Answer

The answer of The light-gathering power of a telescope varies...

Question 12

Advantages of radio astronomy include

Accepted Answer

A)  radio waves are not scattered or deflected by Earth's atmosphere. 
B)  radio observations can be made even when the Sun is in the sky. 
C)  radio observations can be made even when the sky is obscured by clouds. 
D)  radio observations let astronomers study things that emit little visible light. 
E)  all of the above. 
A)  radio waves are not scattered or deflected by Earth's atmosphere. 
B)  radio observations can be made even when the Sun is in the sky. 
C)  radio observations can be made even when the sky is obscured by clouds. 
D)  radio observations let astronomers study things that emit little visible light. 
E)  all of the above.

Question 13

Radio telescopes image a universe much ________ in temperature than with visible light.

Accepted Answer

The answer of Radio telescopes image a universe much ________...

Question 14

Wave energy can only be transmitted through a material medium.

Accepted Answer

A) True 
 B)False

Question 15

Consider this diagram. Which statement is TRUE?

Accepted Answer

A)  The amplitude is 4. 
B)  The amplitude is 6. 
C)  The amplitude is 8. 
D)  The amplitude is 12. 
E)  The amplitude cannot be determined from this diagram. 
A)  The amplitude is 4. 
B)  The amplitude is 6. 
C)  The amplitude is 8. 
D)  The amplitude is 12. 
E)  The amplitude cannot be determined from this diagram.

Question 16

If a light source is approaching you at a speed very close to the speed of light, it will appear

Accepted Answer

A)  redder than it is. 
B)  bluer than it is. 
C)  brighter than it is. 
D)  fainter than it is. 
E)  lower temperature than it is. 
A)  redder than it is. 
B)  bluer than it is. 
C)  brighter than it is. 
D)  fainter than it is. 
E)  lower temperature than it is.

Question 17

An emission spectrum can be used to identify a(n)

Accepted Answer

A)  proton. 
B)  electron. 
C)  neutron. 
D)  atom. 
E)  neutrino. 
A)  proton. 
B)  electron. 
C)  neutron. 
D)  atom. 
E)  neutrino.

Question 18

Why is UV astronomy difficult to do from the ground?

Accepted Answer

The atmosphere blocks most of the UV wav

Question 19

An observer will measure the wavelength of waves emanating from a source that is moving away as longer than it really is.

Accepted Answer

A) True 
 B)False

Question 20

Gamma Rays are a type of electromagnetic radiation.

Accepted Answer

A) True 
 B)False

Explain how Bohr's model creates emission and absorption lines in the spectrum.

What is meant by the wavelength of light? By its frequency? Explain how they are related to each other.

Radio astronomy uses ________ to achieve better resolution than optical telescopes.

The spectral lines of each element are distinctive to that element, whether we are looking at emission or absorption lines.

What is TRUE of a blackbody?

Molecular spectra, like elemental ones, involve only the vibration of the particles.

Why doesn't the Hubble Space Telescope need adaptive optics?

State the relationship between photon energy, frequency, and wavelength.

Observations in the X-ray portion of the spectrum are routinely done from the surface of the Earth.

As white light passes through a prism, the red (longer) wavelengths bend less than the blue (shorter) wavelengths, so forming the rainbow of colors.

The light-gathering power of a telescope varies with the ________ of the diameter of the lens or mirror.

Advantages of radio astronomy include

Radio telescopes image a universe much ________ in temperature than with visible light.

Wave energy can only be transmitted through a material medium.

Consider this diagram. Which statement is TRUE?

If a light source is approaching you at a speed very close to the speed of light, it will appear

An emission spectrum can be used to identify a(n)

Why is UV astronomy difficult to do from the ground?

An observer will measure the wavelength of waves emanating from a source that is moving away as longer than it really is.

Gamma Rays are a type of electromagnetic radiation.

The Night Sky

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

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Exam 2: Light and Telescopes

Explain how Bohr's model creates emission and absorption lines in the spectrum.

What is meant by the wavelength of light? By its frequency? Explain how they are related to each other.

Radio astronomy uses ________ to achieve better resolution than optical telescopes.

The spectral lines of each element are distinctive to that element, whether we are looking at emission or absorption lines.

What is TRUE of a blackbody?

Molecular spectra, like elemental ones, involve only the vibration of the particles.

Why doesn't the Hubble Space Telescope need adaptive optics?

State the relationship between photon energy, frequency, and wavelength.

Observations in the X-ray portion of the spectrum are routinely done from the surface of the Earth.

As white light passes through a prism, the red (longer) wavelengths bend less than the blue (shorter) wavelengths, so forming the rainbow of colors.

The light-gathering power of a telescope varies with the ________ of the diameter of the lens or mirror.

Advantages of radio astronomy include

Radio telescopes image a universe much ________ in temperature than with visible light.

Wave energy can only be transmitted through a material medium.

Consider this diagram. Which statement is TRUE?

If a light source is approaching you at a speed very close to the speed of light, it will appear

An emission spectrum can be used to identify a(n)

Why is UV astronomy difficult to do from the ground?

An observer will measure the wavelength of waves emanating from a source that is moving away as longer than it really is.

Gamma Rays are a type of electromagnetic radiation.

The Night Sky

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

The Sun

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

Filters