Question 1

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

Accepted Answer

Spectrographs are instruments that analy...

Question 2

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) D) and E)
G) C) and D)

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

Resolving power is measured in nanometers.

Accepted Answer

A) True 
 B)False

Question 5

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 D)
G) B) and E)

Question 6

Which part of a telescope is responsible for magnifying an image?

Accepted Answer

A)   eyepiece
B)   primary lens
C)   primary mirror
D)   tube diameter
E)   photometerF) A) and D)
G) A) and C)

Question 7

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) C) and D)
G) None of the above

Question 8

The ____ of a radio telescope collects and focuses radiation.

Accepted Answer

A)   lens
B)   dish
C)   mirror
D)   antenna
E)   computerF) All of the above
G) B) and E)

Question 9

Which form of electromagnetic radiation is able to easily reach Earth's surface through an atmospheric window?

Accepted Answer

A)   microwave
B)   radio
C)   X-rays
D)   gamma
E)   ultravioletF) A) and B)
G) A) and C)

Question 10

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 11

What is so unique about the mirrors of telescopes such as the Keck Observatory, Gran Telescopio Canaries, and the soon-to-be-built Giant Magellan Telescope?

Accepted Answer

A)   The mirrors are made of a newly designed metallic material.
B)   The mirrors can fold up went not in use.
C)   The mirrors are inexpensive.
D)   The mirrors are segmented.
E)   The mirrors are thin.F) B) and E)
G) A) and E)

Question 12

What does a refracting telescope use to gather and focus light?

Accepted Answer

A)   eyepiece
B)   mirror
C)   lens
D)   photometer
E)   active opticsF) B) and C)
G) A) and D)

Question 13

Short-focal-length lenses and mirrors must be strongly curved.

Accepted Answer

A) True 
 B)False

Question 14

Which type of electromagnetic wave is the shortest?

Accepted Answer

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

Exam 6: Light and Telescopes

What does a refracting telescope use to gather and focus light?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified
Because the amount of detail that a tele...
View Answer

The ____ of a radio telescope collects and focuses radiation.

Correct Answer
verified

Which type of electromagnetic wave is the shortest?

Correct Answer
verified

Which part of a telescope is responsible for magnifying an image?

Correct Answer
verified

Which form of electromagnetic radiation is able to easily reach Earth's surface through an atmospheric window?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified
The greatest advantage is the lack of "s...
View Answer

What is so unique about the mirrors of telescopes such as the Keck Observatory, Gran Telescopio Canaries, and the soon-to-be-built Giant Magellan Telescope?

Correct Answer
verified

Resolving power is measured in nanometers.

Correct Answer
verified

Short-focal-length lenses and mirrors must be strongly curved.

Correct Answer
verified

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

Correct Answer
verified
Spectrographs are instruments that analy...
View Answer

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

Correct Answer
verified

Exam 6: Light and Telescopes

What does a refracting telescope use to gather and focus light?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedBecause the amount of detail that a tele...View AnswerShow Answer

The ____ of a radio telescope collects and focuses radiation.

Correct AnswerverifiedShow Answer

Which type of electromagnetic wave is the shortest?

Correct AnswerverifiedShow Answer

Which part of a telescope is responsible for magnifying an image?

Correct AnswerverifiedShow Answer

Which form of electromagnetic radiation is able to easily reach Earth's surface through an atmospheric window?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

What is so unique about the mirrors of telescopes such as the Keck Observatory, Gran Telescopio Canaries, and the soon-to-be-built Giant Magellan Telescope?

Correct AnswerverifiedShow Answer

Resolving power is measured in nanometers.

Correct AnswerverifiedShow Answer

Short-focal-length lenses and mirrors must be strongly curved.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedSpectrographs are instruments that analy...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Because the amount of detail that a tele...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The greatest advantage is the lack of "s...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Spectrographs are instruments that analy...
View Answer

Correct Answer
verified