Question 1

No radio waves penetrate the Earth's atmosphere.

Accepted Answer

A) True 
 B)False

Question 2

Figure 6-1
In the above image (Figure 6-1), what part of the telescope is represented by the pointer?

Accepted Answer

A)  primary lens 
B)  primary mirror 
C)  achromatic lens 
D)  secondary lens 
E)  resolving mirror 
A)  primary lens 
B)  primary mirror 
C)  achromatic lens 
D)  secondary lens 
E)  resolving mirror

Question 3

Why is magnifying power the least important of the three powers of a telescope?

Accepted Answer

Because the amount of detail that a tele

Question 4

Why are X-rays and gamma rays considered dangerous forms of light?

Accepted Answer

A)  These forms of light are only produced by large, dangerous machines. 
B)  There is no form of protection from these forms of light. 
C)  These forms of light break through Earth's atmosphere. 
D)  Photons of these wavelengths have high energy. 
E)  These forms of light cause sunburn. 
A)  These forms of light are only produced by large, dangerous machines. 
B)  There is no form of protection from these forms of light. 
C)  These forms of light break through Earth's atmosphere. 
D)  Photons of these wavelengths have high energy. 
E)  These forms of light cause sunburn.

Question 5

What is a spectrograph and why is it considered an astronomer's most powerful instrument?

Accepted Answer

Spectrographs are instruments that analy

Question 6

A(n) __________ is both an image-recording device and a photometer.

Accepted Answer

A)  interferometer 
B)  spectrograph 
C)  CCD 
D)  primary mirror 
E)  Newtonian focus 
A)  interferometer 
B)  spectrograph 
C)  CCD 
D)  primary mirror 
E)  Newtonian focus

Question 7

Space t elescopes carrying long-wavelength infrared detectors must carry _______________ for their optics to avoid the insides of the telescope and instruments from blinding the detectors.

Accepted Answer

coolant,li

Question 8

What must be used to maintain the optics and operation of an infrared telescope?

Accepted Answer

A)  filters 
B)  lasers 
C)  coolant 
D)  oxygen 
E)  tertiary mirrors 
A)  filters 
B)  lasers 
C)  coolant 
D)  oxygen 
E)  tertiary mirrors

Question 9

Name all the forms of radiation within the electromagnetic spectrum in the order from shortest to longest wavelength.

Accepted Answer

Gamma rays, X-rays, ultraviole

Question 10

Radio telescopes are often located near populated areas.

Accepted Answer

A) True 
 B)False

Question 11

Gravity waves have never been detected.

Accepted Answer

A) True 
 B)False

Question 12

A spectrograph spreads out light according to ____ to form a spectrum.

Accepted Answer

A)  wavelength 
B)  frequency 
C)  interference 
D)  aberration 
E)  grating 
A)  wavelength 
B)  frequency 
C)  interference 
D)  aberration 
E)  grating

Question 13

Built in 1963, the _______________ telescope in Puerto Rico is the largest single radio dish in the world.

Accepted Answer

The answer of Built in 1963, the _______________ telescope in...

Question 14

Which form of radiation has the lowest frequency?

Accepted Answer

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

No radio waves penetrate the Earth's atmosphere.

Figure 6-1 In the above image (Figure 6-1), what part of the telescope is represented by the pointer?

Why is magnifying power the least important of the three powers of a telescope?

Why are X-rays and gamma rays considered dangerous forms of light?

What is a spectrograph and why is it considered an astronomer's most powerful instrument?

A(n) __________ is both an image-recording device and a photometer.

Space t elescopes carrying long-wavelength infrared detectors must carry _______________ for their optics to avoid the insides of the telescope and instruments from blinding the detectors.

What must be used to maintain the optics and operation of an infrared telescope?

Name all the forms of radiation within the electromagnetic spectrum in the order from shortest to longest wavelength.

Radio telescopes are often located near populated areas.

Gravity waves have never been detected.

A spectrograph spreads out light according to ____ to form a spectrum.

Built in 1963, the _______________ telescope in Puerto Rico is the largest single radio dish in the world.

Which form of radiation has the lowest frequency?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Atoms and Spectra

The Sun

The Family of Stars

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

Astrobiology

Filters

Exam 6: Light and Telescopes

No radio waves penetrate the Earth's atmosphere.

Figure 6-1 In the above image (Figure 6-1), what part of the telescope is represented by the pointer?

Why is magnifying power the least important of the three powers of a telescope?

Why are X-rays and gamma rays considered dangerous forms of light?

What is a spectrograph and why is it considered an astronomer's most powerful instrument?

A(n) __________ is both an image-recording device and a photometer.

Space t elescopes carrying long-wavelength infrared detectors must carry _______________ for their optics to avoid the insides of the telescope and instruments from blinding the detectors.

What must be used to maintain the optics and operation of an infrared telescope?

Name all the forms of radiation within the electromagnetic spectrum in the order from shortest to longest wavelength.

Radio telescopes are often located near populated areas.

Gravity waves have never been detected.

A spectrograph spreads out light according to ____ to form a spectrum.

Built in 1963, the _______________ telescope in Puerto Rico is the largest single radio dish in the world.

Which form of radiation has the lowest frequency?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Atoms and Spectra

The Sun

The Family of Stars

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

Astrobiology

Filters