Question 1

Interferometry

Accepted Answer

A)  is used to improve the resolving power. 
B)  decreases the chromatic aberration of a telescope. 
C)  works only for large X-ray and ultraviolet telescopes. 
D)  requires that radio telescopes be within a few hundred feet of each other. 
E)  is none of the above. 
A)  is used to improve the resolving power. 
B)  decreases the chromatic aberration of a telescope. 
C)  works only for large X-ray and ultraviolet telescopes. 
D)  requires that radio telescopes be within a few hundred feet of each other. 
E)  is none of the above. A

Question 2

____ has (have) wavelengths that are longer than visible light.

Accepted Answer

A)  Gamma rays 
B)  Ultraviolet light 
C)  Infrared radiation 
D)  X-rays 
E)  a, b and d above 
A)  Gamma rays 
B)  Ultraviolet light 
C)  Infrared radiation 
D)  X-rays 
E)  a, b and d above C

Question 3

____ has (have) wavelengths that are shorter than visible light.

Accepted Answer

A)  I & II 
B)  I & IV 
C)  II & III 
D)  II, III, & IV 
E)  I, II, & IV 
A)  I & II 
B)  I & IV 
C)  II & III 
D)  II, III, & IV 
E)  I, II, & IV E

Question 4

List the advantages the Hubble Space Telescope has over ground-based telescopes.

Accepted Answer

The answer of List the advantages the Hubble Space Telescope...

Question 5

What is the ratio of the light-gathering power of a 10-m telescope to that of a 1-m telescope?

Accepted Answer

A)  10 to 1 
B)  1 to 10 
C)  100 to 1 
D)  1 to 100 
E)  3.2 to 1 
A)  10 to 1 
B)  1 to 10 
C)  100 to 1 
D)  1 to 100 
E)  3.2 to 1

Question 6

What advantages does a large-diameter astronomical telescope have over a telescope of a smaller diameter?

Accepted Answer

The answer of What advantages does a large-diameter astronomical telescope...

Question 7

Which of the following types of electromagnetic radiation has the lowest energy?

Accepted Answer

A)  X-rays 
B)  visible light 
C)  ultraviolet 
D)  gamma rays 
E)  infrared radiation 
A)  X-rays 
B)  visible light 
C)  ultraviolet 
D)  gamma rays 
E)  infrared radiation

Question 8

A(n) ____________________ telescope has an objective that is a lens.

Accepted Answer

The answer of A(n) ____________________ telescope has an objective that...

Question 9

A ____ has a few million light sensitive diodes in an array typically about a half-inch square.

Accepted Answer

A)  photometer 
B)  charge-coupled device 
C)  spectrograph 
D)  photographic plate 
E)  grating 
A)  photometer 
B)  charge-coupled device 
C)  spectrograph 
D)  photographic plate 
E)  grating

Question 10

The sidereal drive on a telescope mounting must turn the telescope eastward about the polar axis.

Accepted Answer

A) True 
 B)False

Question 11

Which of the items below is electromagnetic radiation?

Accepted Answer

A)  gamma rays 
B)  X-rays 
C)  visible light 
D)  radio 
E)  all of the above 
A)  gamma rays 
B)  X-rays 
C)  visible light 
D)  radio 
E)  all of the above

Question 12

A telescope whose objective is a lens and contains no mirrors is a(n) ____ telescope.

Accepted Answer

A)  refracting 
B)  reflecting 
C)  deflecting 
D)  compound 
E)  retracting 
A)  refracting 
B)  reflecting 
C)  deflecting 
D)  compound 
E)  retracting

Question 13

Violet light has a wavelength of approximately ____.

Accepted Answer

A)  400 nm 
B)  4000 nm 
C)  7000 nm 
D)  700 nm 
E)  3*108 m 
A)  400 nm 
B)  4000 nm 
C)  7000 nm 
D)  700 nm 
E)  3*108 m

Question 14

Which of the following features of a telescope determines its light-gathering power?

Accepted Answer

A)  the focal length of the objective 
B)  the focal length of the eyepiece 
C)  the diameter of the objective 
D)  tength of the telescope tube 
E)  none of the above 
A)  the focal length of the objective 
B)  the focal length of the eyepiece 
C)  the diameter of the objective 
D)  tength of the telescope tube 
E)  none of the above

Question 15

The pupil of the human eye is approximately 0.8 cm in diameter when adapted to the dark. The ratio of the light-gathering power of a 1.6-m telescope to that of the human eye is ____.

Accepted Answer

A)  2 
B)  4 
C)  20 
D)  400 
E)  40,000 
A)  2 
B)  4 
C)  20 
D)  400 
E)  40,000

Question 16

Refracting telescopes suffer from ____________________ aberration.

Accepted Answer

The answer of Refracting telescopes suffer from ____________________ aberration....

Question 17

What are sources of light pollution and how do those affect astronomical observations?

Accepted Answer

The answer of What are sources of light pollution and...

Question 18

Explain how interferometry works.

Accepted Answer

The answer of Explain how interferometry works....

Question 19

A ____ is used to produce and analyze a spectrum.

Accepted Answer

A)  photo 
B)  spectrograph 
C)  photometer 
D)  charge-coupled device 
A)  photo 
B)  spectrograph 
C)  photometer 
D)  charge-coupled device

Question 20

What statement below best describes the behavior of light encountering the objective lens of a refracting telescope?

Accepted Answer

A)  All light is absorbed as it travels though a dense, transparent material. 
B)  White light from astronomical objects is emitted by the lens. 
C)  Light rays are focused to form an image after they pass through the lens which is of different optical density. 
D)  Light rays are focused to form an image after they reflect off the lens. 
A)  All light is absorbed as it travels though a dense, transparent material. 
B)  White light from astronomical objects is emitted by the lens. 
C)  Light rays are focused to form an image after they pass through the lens which is of different optical density. 
D)  Light rays are focused to form an image after they reflect off the lens.

Interferometry

____ has (have) wavelengths that are longer than visible light.

____ has (have) wavelengths that are shorter than visible light.

List the advantages the Hubble Space Telescope has over ground-based telescopes.

What is the ratio of the light-gathering power of a 10-m telescope to that of a 1-m telescope?

What advantages does a large-diameter astronomical telescope have over a telescope of a smaller diameter?

Which of the following types of electromagnetic radiation has the lowest energy?

A(n) ____________________ telescope has an objective that is a lens.

A ____ has a few million light sensitive diodes in an array typically about a half-inch square.

The sidereal drive on a telescope mounting must turn the telescope eastward about the polar axis.

Which of the items below is electromagnetic radiation?

A telescope whose objective is a lens and contains no mirrors is a(n) ____ telescope.

Violet light has a wavelength of approximately ____.

Which of the following features of a telescope determines its light-gathering power?

The pupil of the human eye is approximately 0.8 cm in diameter when adapted to the dark. The ratio of the light-gathering power of a 1.6-m telescope to that of the human eye is ____.

Refracting telescopes suffer from ____________________ aberration.

What are sources of light pollution and how do those affect astronomical observations?

Explain how interferometry works.

A ____ is used to produce and analyze a spectrum.

What statement below best describes the behavior of light encountering the objective lens of a refracting telescope?

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

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

The Origin of the Solar System

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 5: Light and Telescopes

Interferometry

____ has (have) wavelengths that are longer than visible light.

____ has (have) wavelengths that are shorter than visible light.

List the advantages the Hubble Space Telescope has over ground-based telescopes.

What is the ratio of the light-gathering power of a 10-m telescope to that of a 1-m telescope?

What advantages does a large-diameter astronomical telescope have over a telescope of a smaller diameter?

Which of the following types of electromagnetic radiation has the lowest energy?

A(n) ____________________ telescope has an objective that is a lens.

A ____ has a few million light sensitive diodes in an array typically about a half-inch square.

The sidereal drive on a telescope mounting must turn the telescope eastward about the polar axis.

Which of the items below is electromagnetic radiation?

A telescope whose objective is a lens and contains no mirrors is a(n) ____ telescope.

Violet light has a wavelength of approximately ____.

Which of the following features of a telescope determines its light-gathering power?

The pupil of the human eye is approximately 0.8 cm in diameter when adapted to the dark. The ratio of the light-gathering power of a 1.6-m telescope to that of the human eye is ____.

Refracting telescopes suffer from ____________________ aberration.

What are sources of light pollution and how do those affect astronomical observations?

Explain how interferometry works.

A ____ is used to produce and analyze a spectrum.

What statement below best describes the behavior of light encountering the objective lens of a refracting telescope?

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

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

The Origin of the Solar System

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