Question 1

What characteristic of a telescope controls the amount of light captured by the telescope?

Accepted Answer

A)  resolving power 
B)  magnifying power 
C)  size of eyepiece 
D)  number of mirrors 
E)  diameter of tube 
A)  resolving power 
B)  magnifying power 
C)  size of eyepiece 
D)  number of mirrors 
E)  diameter of tube

Question 2

Light-gathering power is proportional to the _______________ of the telescope primary lens or mirror.

Accepted Answer

The answer of Light-gathering power is proportional to the _______________...

Question 3

A lens called the _______________ is typically used to magnify the image and make it convenient to view distant objects.

Accepted Answer

The answer of A lens called the _______________ is typically...

Question 4

If telescope A is 160 cm in diameter, and telescope B is 32 cm in diameter, how much more light does telescope A gather than telescope B?

Accepted Answer

A)  5 times 
B)  10 times 
C)  20 times 
D)  25 times 
E)  100 times 
A)  5 times 
B)  10 times 
C)  20 times 
D)  25 times 
E)  100 times

Question 5

Resolving power is measured in nanometers.

Accepted Answer

A) True 
 B)False

Question 6

Space-based telescopes carrying long-wavelength infrared detectors must carry coolant such as liquid helium to chill their optics to near absolute zero temperature.

Accepted Answer

A) True 
 B)False

Question 7

Where would you most likely find a large radio telescope?

Accepted Answer

A)  in a busy, populated area 
B)  at the peak of a mountain 
C)  on top of a tall building 
D)  in a mountain valley 
E)  near multiple radio towers 
A)  in a busy, populated area 
B)  at the peak of a mountain 
C)  on top of a tall building 
D)  in a mountain valley 
E)  near multiple radio towers

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

What is the function of the receiver antenna of a radio telescope?

Accepted Answer

A)  To absorb the radio energy collected by the dish 
B)  To collect and focus the radiation 
C)  To follow a signal 
D)  To move the telescope 
E)  To control the shape of the dish 
A)  To absorb the radio energy collected by the dish 
B)  To collect and focus the radiation 
C)  To follow a signal 
D)  To move the telescope 
E)  To control the shape of the dish

Question 10

Which power of a telescope reveals fine details within an image?

Accepted Answer

A)  light gathering power 
B)  resolving power 
C)  magnifying power 
D)  focusing power 
E)  defining power 
A)  light gathering power 
B)  resolving power 
C)  magnifying power 
D)  focusing power 
E)  defining power

Question 11

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 12

Why aren't optical or radio telescopes used in particle astronomy, which studies cosmic waves and gravity waves?

Accepted Answer

A)  Cosmic and gravity waves are too dangerous to detect. 
B)  Particle astronomy can only be studied in deep space. 
C)  Cosmic and gravity waves are too large of particles for ground-based telescopes. 
D)  Optical and radio telescopes can only detect electromagnetic radiation. 
E)  Optical and radio telescopes are not technologically advanced enough to capture these particles. 
A)  Cosmic and gravity waves are too dangerous to detect. 
B)  Particle astronomy can only be studied in deep space. 
C)  Cosmic and gravity waves are too large of particles for ground-based telescopes. 
D)  Optical and radio telescopes can only detect electromagnetic radiation. 
E)  Optical and radio telescopes are not technologically advanced enough to capture these particles.

Question 13

All large astronomical telescopes built since the start of the 20th century have been _______________ telescopes.

Accepted Answer

The answer of All large astronomical telescopes built since the...

Question 14

Light gathering power and resolving power both depend on what characteristic of a telescope?

Accepted Answer

A)  number of lenses 
B)  magnification 
C)  focal length 
D)  location 
E)  diameter 
A)  number of lenses 
B)  magnification 
C)  focal length 
D)  location 
E)  diameter

Question 15

Cosmic rays are made of photons.

Accepted Answer

A) True 
 B)False

Question 16

A optical distortion of refracting telescopes called _______________ causes a separation of colors, such as when you focus on one color, the other colors in an image are blurred.

Accepted Answer

chromatic

Question 17

One way to measure and compare the strength of the radio signal at various places in the sky is to produce a(n) _______________ in which each color marks areas of similar radio intensity.

Accepted Answer

representational-col

Question 18

The Chandra observatory uses ________________ mirrors in which the X-rays reflect at shallow angles from the polished inside of the mirrors to form images on X-ray detectors.

Accepted Answer

The answer of The Chandra observatory uses ________________ mirrors in...

Question 19

What is the shape of the segmented mirrors of twin Keck Observatory telescopes, Gran Telescopio Canarias, and soon to be launched James Web Space Telescope?

Accepted Answer

A)  spherical 
B)  hexagonal 
C)  rectangular 
D)  triangular 
E)  octagonal 
A)  spherical 
B)  hexagonal 
C)  rectangular 
D)  triangular 
E)  octagonal

Question 20

CCD images captured from telescopes are often ____ to be stored in a computer's memory for later analysis.

Accepted Answer

A)  pixilated 
B)  compounded 
C)  falsely colored 
D)  divided into smaller images 
E)  converted to numerical data 
A)  pixilated 
B)  compounded 
C)  falsely colored 
D)  divided into smaller images 
E)  converted to numerical data

Exam 6: Light and Telescopes

What characteristic of a telescope controls the amount of light captured by the telescope?

Light-gathering power is proportional to the _______________ of the telescope primary lens or mirror.

A lens called the _______________ is typically used to magnify the image and make it convenient to view distant objects.

If telescope A is 160 cm in diameter, and telescope B is 32 cm in diameter, how much more light does telescope A gather than telescope B?

Resolving power is measured in nanometers.

Space-based telescopes carrying long-wavelength infrared detectors must carry coolant such as liquid helium to chill their optics to near absolute zero temperature.

Where would you most likely find a large radio telescope?

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

What is the function of the receiver antenna of a radio telescope?

Which power of a telescope reveals fine details within an image?

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

Why aren't optical or radio telescopes used in particle astronomy, which studies cosmic waves and gravity waves?

All large astronomical telescopes built since the start of the 20th century have been _______________ telescopes.

Light gathering power and resolving power both depend on what characteristic of a telescope?

Cosmic rays are made of photons.

A optical distortion of refracting telescopes called _______________ causes a separation of colors, such as when you focus on one color, the other colors in an image are blurred.

One way to measure and compare the strength of the radio signal at various places in the sky is to produce a(n) _______________ in which each color marks areas of similar radio intensity.

The Chandra observatory uses ________________ mirrors in which the X-rays reflect at shallow angles from the polished inside of the mirrors to form images on X-ray detectors.

What is the shape of the segmented mirrors of twin Keck Observatory telescopes, Gran Telescopio Canarias, and soon to be launched James Web Space Telescope?

CCD images captured from telescopes are often ____ to be stored in a computer's memory for later analysis.

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

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

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