Question 1

Assume you are not near any X-ray machines. If your eyes could only see in X-rays, what color would best describe your view of your surroundings

Accepted Answer

A) white 
B) red 
C) violet 
D) black 
A) white 
B) red 
C) violet 
D) black

Question 2

Long wavelength visible light

Accepted Answer

A) will have a greater energy than short wavelength visible light. 
B) will have a speed that is faster than short wavelength light. 
C) has a higher frequency than short wavelength visible light. 
D) will appear blue in color to the average human eye. 
E) will appear red in color to the average human eye. 
A) will have a greater energy than short wavelength visible light. 
B) will have a speed that is faster than short wavelength light. 
C) has a higher frequency than short wavelength visible light. 
D) will appear blue in color to the average human eye. 
E) will appear red in color to the average human eye.

Question 3

The resolving power for light of 550 nm of an optical telescope with a diameter of 232 cm is

Accepted Answer

A) 0.05 arc seconds. 
B) 232 arc seconds. 
C) 2.32 arc seconds. 
D) 5 arc seconds. 
E) 11.6 arc seconds. 
A) 0.05 arc seconds. 
B) 232 arc seconds. 
C) 2.32 arc seconds. 
D) 5 arc seconds. 
E) 11.6 arc seconds.

Question 4

Compared to the right side, the left side shows less detail due to ____________.

Accepted Answer

A) blurriness 
B) chromatic aberration 
C) good seeing 
D) poor seeing 
A) blurriness 
B) chromatic aberration 
C) good seeing 
D) poor seeing

Question 5

Cosmic rays are electromagnetic radiation.

Accepted Answer

A) True 
 B)False

Question 6

The sidereal drive on a telescope mounting must turn the telescope eastward about the polar axis.

Accepted Answer

A) True 
 B)False

Question 7

The optical shape of segmented mirrors is controlled by computer-driven thrusters under the mirrors in what is called

Accepted Answer

A) an achromatic lens. 
B) active optics. 
C) a Schmidt-Cassegrain design. 
D) a Newtonian design. 
E) interferometry. 
A) an achromatic lens. 
B) active optics. 
C) a Schmidt-Cassegrain design. 
D) a Newtonian design. 
E) interferometry.

Question 8

_______ penetrate(s) the Earth's atmosphere to reach its surface.

Accepted Answer

A) X-rays 
B) Radio waves 
C) Visible light 
D) X-rays and radio waves 
E) Radio waves and visible light 
A) X-rays 
B) Radio waves 
C) Visible light 
D) X-rays and radio waves 
E) Radio waves and visible light

Question 9

What statement below best describes the behavior of light encountering the objective lens of a refracting telescope

Accepted Answer

A) All light is absorbed as it travels through a dense, transparent material. 
B) White light from astronomical objects is emitted by the lens. 
C) Light rays are focused to form an image after they pass through the lens. 
D) Light rays are focused to form an image after they reflect off the lens. 
A) All light is absorbed as it travels through a dense, transparent material. 
B) White light from astronomical objects is emitted by the lens. 
C) Light rays are focused to form an image after they pass through the lens. 
D) Light rays are focused to form an image after they reflect off the lens.

Question 10

On the Moon, no air is present. As such, which of the following waves cannot be detected.

Accepted Answer

A) optical 
B) infrared 
C) radio 
D) sound 
A) optical 
B) infrared 
C) radio 
D) sound

Question 11

Electromagnetic radiation, or light, travels at speed ___________ m/s.

Accepted Answer

The answer of Electromagnetic radiation, or light, travels at speed...

Question 12

The ____________________ is a measure of the finest detail that can be seen in an image.

Accepted Answer

The answer of The ____________________ is a measure of the...

Question 13

Why were telescopes with very large, thin mirrors not built 50 years ago

Accepted Answer

Because a large thin mirror will sag und

Question 14

Which wavelength band uses observatories on aircraft

Accepted Answer

A) ultraviolet 
B) visual 
C) infrared 
D) X-ray 
A) ultraviolet 
B) visual 
C) infrared 
D) X-ray

Question 15

To keep a telescope fixed on a stellar target over time as Earth rotates, the telescope must have a/an _____________________.

Accepted Answer

The answer of To keep a telescope fixed on a...

Question 16

A larger-primary lens shows ____________ a smaller-primary lens.

Accepted Answer

A) more detail than 
B) less detail than 
C) the same amount of detail as 
A) more detail than 
B) less detail than 
C) the same amount of detail as

Question 17

What causes chromatic aberration Why does it not occur in reflecting telescopes

Accepted Answer

When light is refracted through glass, s

Question 18

Which of the following types of electromagnetic radiation has the smallest frequency

Accepted Answer

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

Question 19

How do electronic cameras resemble photographic plates How do they differ

Accepted Answer

Photographic plates can detect faint obj

Question 20

The sidereal drive of a telescope mounting must turn the telescope

Accepted Answer

A) southward about the polar axis. 
B) eastward about the polar axis. 
C) westward about the polar axis. 
D) northward about the polar axis. 
E) None of the other choices are correct. 
A) southward about the polar axis. 
B) eastward about the polar axis. 
C) westward about the polar axis. 
D) northward about the polar axis. 
E) None of the other choices are correct.

Assume you are not near any X-ray machines. If your eyes could only see in X-rays, what color would best describe your view of your surroundings

Long wavelength visible light

The resolving power for light of 550 nm of an optical telescope with a diameter of 232 cm is

Compared to the right side, the left side shows less detail due to ____________.

Cosmic rays are electromagnetic radiation.

The sidereal drive on a telescope mounting must turn the telescope eastward about the polar axis.

The optical shape of segmented mirrors is controlled by computer-driven thrusters under the mirrors in what is called

_______ penetrate(s) the Earth's atmosphere to reach its surface.

What statement below best describes the behavior of light encountering the objective lens of a refracting telescope

On the Moon, no air is present. As such, which of the following waves cannot be detected.

Electromagnetic radiation, or light, travels at speed ___________ m/s.

The ____________________ is a measure of the finest detail that can be seen in an image.

Why were telescopes with very large, thin mirrors not built 50 years ago

Which wavelength band uses observatories on aircraft

To keep a telescope fixed on a stellar target over time as Earth rotates, the telescope must have a/an _____________________.

A larger-primary lens shows ____________ a smaller-primary lens.

What causes chromatic aberration Why does it not occur in reflecting telescopes

Which of the following types of electromagnetic radiation has the smallest frequency

How do electronic cameras resemble photographic plates How do they differ

The sidereal drive of a telescope mounting must turn the telescope

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

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Exam 5: Light and Telescopes

Assume you are not near any X-ray machines. If your eyes could only see in X-rays, what color would best describe your view of your surroundings

Long wavelength visible light

The resolving power for light of 550 nm of an optical telescope with a diameter of 232 cm is

Compared to the right side, the left side shows less detail due to ____________.

Cosmic rays are electromagnetic radiation.

The sidereal drive on a telescope mounting must turn the telescope eastward about the polar axis.

The optical shape of segmented mirrors is controlled by computer-driven thrusters under the mirrors in what is called

_______ penetrate(s) the Earth's atmosphere to reach its surface.

What statement below best describes the behavior of light encountering the objective lens of a refracting telescope

On the Moon, no air is present. As such, which of the following waves cannot be detected.

Electromagnetic radiation, or light, travels at speed ___________ m/s.

The ____________________ is a measure of the finest detail that can be seen in an image.

Why were telescopes with very large, thin mirrors not built 50 years ago

Which wavelength band uses observatories on aircraft

To keep a telescope fixed on a stellar target over time as Earth rotates, the telescope must have a/an _____________________.

A larger-primary lens shows ____________ a smaller-primary lens.

What causes chromatic aberration Why does it not occur in reflecting telescopes

Which of the following types of electromagnetic radiation has the smallest frequency

How do electronic cameras resemble photographic plates How do they differ

The sidereal drive of a telescope mounting must turn the telescope

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters