Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A)  eyepiece 
B)  mirror 
C)  lens 
D)  photometer 
E)  active optics 
A)  eyepiece 
B)  mirror 
C)  lens 
D)  photometer 
E)  active optics

Question 3

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 4

The ____ of a radio telescope collects and focuses radiation.

Accepted Answer

A)  lens 
B)  dish 
C)  mirror 
D)  antenna 
E)  computer 
A)  lens 
B)  dish 
C)  mirror 
D)  antenna 
E)  computer

Question 5

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. 
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.

Question 6

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 7

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 8

Which type of electromagnetic wave is the shortest?

Accepted Answer

A)  radio 
B)  X-rays 
C)  visible light 
D)  gamma 
E)  microwave 
A)  radio 
B)  X-rays 
C)  visible light 
D)  gamma 
E)  microwave

Question 9

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 10

Resolving power is measured in nanometers.

Accepted Answer

A) True 
 B)False

Question 11

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)  ultraviolet 
A)  microwave 
B)  radio 
C)  X-rays 
D)  gamma 
E)  ultraviolet

Question 12

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 13

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)  photometer 
A)  eyepiece 
B)  primary lens 
C)  primary mirror 
D)  tube diameter 
E)  photometer

Question 14

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

Accepted Answer

Spectrographs are instruments that analy

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

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

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

The ____ of a radio telescope collects and focuses radiation.

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?

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

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

Which type of electromagnetic wave is the shortest?

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

Resolving power is measured in nanometers.

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

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

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

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

Here and Now

A User S Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Atoms and Spectra

The Sun

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology: Life on Other Worlds

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Exam 6: Light and Telescopes

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

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

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

The ____ of a radio telescope collects and focuses radiation.

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?

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

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

Which type of electromagnetic wave is the shortest?

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

Resolving power is measured in nanometers.

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

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

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

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

Here and Now

A User S Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Atoms and Spectra

The Sun

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology: Life on Other Worlds

Filters