Question 1

What are the advantages of putting telescopes in space?  Provide specific examples of three current space telescopes.

Accepted Answer

The greatest advantage is the lack of "s...

Question 2

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 3

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 4

Why have so many optical telescopes been built atop Mauna Kea, Hawai'i?

Accepted Answer

To avoid light pollution and l...

Question 5

Which type of electromagnetic wave is the shortest?

Accepted Answer

A)   radio
B)   X-rays
C)   visible light
D)   gamma
E)   microwaveF) A) and B)
G) D) and E)

Question 6

What type of electromagnetic radiation does Chandra collect?

Accepted Answer

A)   visible light
B)   ultraviolet
C)   microwave
D)   infrared
E)   X-rayF) C) and D)
G) A) and E)

Question 7

Refracting telescopes use a mirror to gather and focus light.

Accepted Answer

A) True 
 B)False

Question 8

What are the three factors which can limit the resolving power of a telescope?

Accepted Answer

diffraction, optical...

Question 9

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)   octagonalF) C) and E)
G) None of the above

Question 10

Optical telescopes are intended for the study of _______________ light.

Accepted Answer

The answer of Optical telescopes are intended for the study...

Question 11

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.F) A) and B)
G) A) and C)

Question 12

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

Accepted Answer

A)   wavelength
B)   frequency
C)   interference
D)   aberration
E)   gratingF) A) and B)
G) B) and C)

Question 13

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 dishF) A) and E)
G) C) and E)

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)   diameterF) B) and C)
G) C) and D)

Question 15

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 dataF) A) and C)
G) A) and B)

Question 16

Explain the difference between cosmic rays and electromagnetic radiation, and how cosmic particles are captured.

Accepted Answer

Unlike electromagnetic radiation, which ...

Question 17

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 powerF) A) and E)
G) A) and C)

Question 18

Figure 6-7b
In the above image, 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 mirrorF) C) and E)
G) A) and E)

Question 19

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 towersF) A) and E)
G) B) and C)

Question 20

Resolving power is measured in nanometers.

Accepted Answer

A) True 
 B)False

Exam 6: Light and Telescopes

What are the advantages of putting telescopes in space? Provide specific examples of three current space telescopes.

Correct AnswerverifiedThe greatest advantage is the lack of "s...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Figure 6-7b In the above image, what part of the telescope is represented by the pointer?

Correct AnswerverifiedShow Answer

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.

Correct Answerverifiedchromatic ...View AnswerShow Answer

Explain the difference between cosmic rays and electromagnetic radiation, and how cosmic particles are captured.

Correct AnswerverifiedUnlike electromagnetic radiation, which ...View AnswerShow Answer

Resolving power is measured in nanometers.

Correct AnswerverifiedShow Answer

Why have so many optical telescopes been built atop Mauna Kea, Hawai'i?

Correct AnswerverifiedTo avoid light pollution and l...View AnswerShow Answer

Refracting telescopes use a mirror to gather and focus light.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Optical telescopes are intended for the study of _______________ light.

Correct AnswerverifiedShow Answer

Where would you most likely find a large radio telescope?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What are the three factors which can limit the resolving power of a telescope?

Correct Answerverifieddiffraction, optical...View AnswerShow Answer

Which type of electromagnetic wave is the shortest?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What type of electromagnetic radiation does Chandra collect?

Correct AnswerverifiedShow Answer

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The greatest advantage is the lack of "s...
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chromatic ...
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Unlike electromagnetic radiation, which ...
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To avoid light pollution and l...
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diffraction, optical...
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