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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 1 - Path Of Light Review Test Submission: Exercise 01H
Review Test Submission: Exercise 01
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 01Started 8/25/14 12:31 PMSubmitted 8/25/14 12:39 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 7 minutesInstructions
Question 1
If you enlarge the pinhole, does the imageSelected Answer: become brighter
Correct Answer: become brighter
Question 2
The path of light going from water to airSelected Answer: is reversible
Correct Answer: is reversible
Question 3
The velocity of light in a uniform glass mediumSelected Answer: is constant
Correct Answer: is constant
Question 4
When you view an object with a pinhole scope, the object is inverted. If you rotate the scope 180 degrees, the image is
Selected Answer: still inverted
Correct Answer: still inverted
Question 5
The path of white light in a uniform medium
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Tuesday, October 28, 2014 9:07:20 PM MST
Selected Answer: is straight for all colors
Correct Answer: is straight for all colors
Question 6
If you punched three holes in the foil of the scope, how many images do you see in the viewer?Selected Answer: three
Correct Answer: three
Question 7
If we consider the human eye as a pinhole camera with the image of an arrow projected on the back of the eye (the "retina"),the image would beSelected Answer: inverted (upside down)
Correct Answer: inverted (upside down)
Question 8
If the Sun's light were to be extinguished at this moment, in what time would we know about it if were were on Venus? (Thedistance to the Sun is 1.5 x 108 km)Selected Answer: in some minutes
Correct Answer: in some minutes
Question 9
The path of light in a glass mediumSelected Answer: is straight
Correct Answer: is straight
Question 10
The velocity of white light in a uniform transparent mediumSelected Answer: is constant for all colors
Correct Answer: is constant for all colors
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 2 - Reflection and Refraction Review Test Submission: Exercise 02H
Review Test Submission: Exercise 02
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 02Started 9/4/14 6:18 PMSubmitted 9/4/14 6:35 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 16 minutesInstructions
Question 1
A beam of light incident on a flat water surface reflects from the mirror-like surface so that the angle of incidence equals theangle of reflection. The water is wavy. Would individual light beams (individual photons, for example) obey the law of reflectionin this case?Selected Answer: Yes
Correct Answer: Yes
Question 2
If a lens has chromatic aberration, the focal length of red and blue light isSelected Answer: changed
Correct Answer: changed
Question 3
A beam of red light is incident on a glass plate passes the glass/air boundary. What does not change?Selected Answer: energy
Correct Answer: energy
Question 4
A beam of light is traveling in air and crosses into glass. As the light crosses the air/glass boundary, which of the followingoccurs?Selected Answer: a change in wavelength
Correct Answer: a change in wavelength
Question 5
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Tuesday, October 28, 2014 9:11:04 PM MST
A beam of red light is traveling in a glass and crosses into air. As the light crosses the boundary, which of the following occurs?Selected Answer: a change in wavelength
Correct Answer: a change in wavelength
Question 6
A beam of blue light in air is incident on a glass plate. Will the beam transmitted through the glass plate emerge parallel to theincident beam?Selected Answer: Yes
Correct Answer: Yes
Question 7
If a lens has chromatic aberration, the focal length of red light compared to that of blue lightSelected Answer: is different
Correct Answer: is different
Question 8
A beam of light, incident on a flat water surface, reflects from the mirror-like surface so that the angle of incidence equals theangle of reflection. The water has waves. Would individual light beams obey the law of reflection in this case?Selected Answer: Yes
Correct Answer: Yes
Question 9
If the focal length of red light is different from that of blue light, the lens has
Selected Answer: chromatic aberration
Correct Answer: chromatic aberration
Question 10
In order to see an object it must
Selected Answer: emit or reflect light
Correct Answer: emit or reflect light
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 3 - Lenses and Fresnel Lenses Review Test Submission: Exercise 03H
Review Test Submission: Exercise 03
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 03Started 9/9/14 1:28 PMSubmitted 9/9/14 1:39 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 11 minutesInstructions
Question 1
One disadvantage of using a Fresnel plastic lens over that of a standard quartz convex lens isSelected Answer: quality of the image
Correct Answer: quality of the image
Question 2
If you have a light source a distance from a concave lens and you project the image on a sheet of paper, does the image appearSelected Answer: behind the source
Correct Answer: behind the source
Question 3
If the incident rays are diverging as they come to the lens,as compared to the case the parallel incident rays, the focal point is
Selected Answer: farther from the lens
Correct Answer: farther from the lens
Question 4
The weight of the lens is one advantage of using a Fresnel plastic lens of the same focal length over that of a:Selected Answer: convex lens
Correct Answer: convex lens
Question 5
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Tuesday, October 28, 2014 9:12:58 PM MST
If you have two convex lenses with different magnification, which has the larger curvature?Selected Answer: the lens with the smaller focal length
Correct Answer: the lens with the smaller focal length
Question 6
If you have a light source a distance from a convex lens and you project the image on a sheet of paper, does the image appearSelected Answer: inverted
Correct Answer: inverted
Question 7
A virtual image is
Selected Answer: cannot be projected on a screen
Correct Answer: cannot be projected on a screen
Question 8
If you have two convex lenses with different curvatures, which has the greater curvature?Selected Answer: the lens with the shorter focal length
Correct Answer: the lens with the shorter focal length
Question 9
The magnification of a convex lens compared to a Fresnel lens:Selected Answer: can be the same
Correct Answer: can be the same
Question 10
A concave lens is used. Will the image appearSelected Answer: different
Correct Answer: different
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 4 - Life Cycle of Photon Review Test Submission: Exercise 04H
Review Test Submission: Exercise 04
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 04Started 9/16/14 7:23 PMSubmitted 9/16/14 7:31 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 7 minutesInstructions
Question 1
Light can be described as having wave-like behavior andSelected Answer: particle-like behavior
Correct Answer: particle-like behavior
Question 2
An electron gaining energy describes:Selected Answer: photon absorption
Correct Answer: photon absorption
Question 3
A photon is emitted (created) with?Selected Answer: an electron losing energy.
Correct Answer: an electron losing energy.
Question 4
An electron losing energy describes:Selected Answer: photon creation
Correct Answer: photon creation
Question 5
A gamma ray is part of the electromagnetic spectrum. Compared to photons of X-rays, a gamma ray has?
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Selected Answer: all of the above
Correct Answer: all of the above
Question 6
Microwaves are part of the electromagnetic spectrum. Compared to photons of visible light, a microwave has?Selected Answer: all of the above
Correct Answer: all of the above
Question 7
A photon is absorbed and vanishes (or dies) with?Selected Answer: an electron gaining energy
Correct Answer: an electron gaining energy
Question 8
Which of the following CANNOT be described as a "photon"?Selected Answer: compressive wave
Correct Answer: compressive wave
Question 9
An electron and positron can recombine with each other and createSelected Answer: a photon
Correct Answer: a photon
Question 10
Which of the following CANNOT be described as a "photon"?Selected Answer: sound wave.
Correct Answer: sound wave.
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 5 - Color and the Visible Spectrum Review Test Submission: Exercise 05H
Review Test Submission: Exercise 05
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 05Started 9/23/14 6:23 PMSubmitted 9/23/14 6:34 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 10 minutesInstructions
Question 1
When white light is incident on glass about 4% of the incident light is reflected from the air/glass interface (you can seeyourself in a shop window as you walk past). Would some of the red light also be reflected?Selected Answer: Yes
Correct Answer: Yes
Question 2
In the electromagnetic spectrum, as the energy of the radiation increases from radio waves to x-rays, the wavelengthSelected Answer: decreases
Correct Answer: decreases
Question 3
Colored light may have a dominant wavelength orSelected Answer: hue
Correct Answer: hue
Question 4
Which of the following colors could not be represented by a single wavelength of light?Selected Answer: purple
Correct Answer: purple
Question 5
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Tuesday, October 28, 2014 9:15:03 PM MST
A wavelength of blue light is 450 nanometers (nm). Is this wavelength longer or shorter than a wavelength of red light?Selected Answer: shorter
Correct Answer: shorter
Question 6
In the electromagnetic spectrum, as the energy of the radiation increases from radio waves to x-rays, the velocitySelected Answer: stays the same
Correct Answer: stays the same
Question 7
What colors are used in a T.V. color monitor?Selected Answer: red, blue and green
Correct Answer: red, blue and green
Question 8
Representing visible light by waves, the wavelength isSelected Answer: the distance from one wave crest to the next
Correct Answer: the distance from one wave crest to the next
Question 9
In the electromagnetic spectrum of visible light, the shortest wavelength is associated with violet, the longest withSelected Answer: red
Correct Answer: red
Question 10
A single photon of one color differs from a photon of another color only by its
Selected Answer: energy
Correct Answer: energy
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 6 - Rainbows & Blue Sky Review Test Submission: Exercise 06H
Review Test Submission: Exercise 06
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 06Started 9/30/14 7:28 PMSubmitted 9/30/14 7:35 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 7 minutesInstructions
Question 1
A rainbow not only refracts and disperses light it also
Selected Answer: reflects
Correct Answer: reflects
Question 2
When you have two rainbows, the outer ring of the second (outer) rainbow isSelected Answer: blue
Correct Answer: blue
Question 3
As light is reflected from raindrops, each color emerges at
Selected Answer: a different angle
Correct Answer: a different angle
Question 4
When light encounters a boundary between two transparent materials with different indices of refraction, some of the light istransmitted and some isSelected Answer: reflected
Correct Answer: reflected
Question 5
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Tuesday, October 28, 2014 9:15:47 PM MST
The rainbow is an arc of colored light centered aroundSelected Answer: the observer's shadow
Correct Answer: the observer's shadow
Question 6
The observer's shadow is the center of the arc of the
Selected Answer: rainbow
Correct Answer: rainbow
Question 7
If you are admiring a raindrop with a friend you are each seeingSelected Answer: a different rainbow
Correct Answer: a different rainbow
Question 8
The preferential scattering of blue light causes the sky to be blue and the sunsets red. If the scattering by air moleculesanddust was independent of wavelength (no preferential scattering) the color of the sky would beSelected Answer: white
Correct Answer: white
Question 9
If red (instead of blue) light was preferentially scattered, the sunsets would appearSelected Answer: blue
Correct Answer: blue
Question 10
If we observe a rainbow when sunlight shines on rain, why don't we see a complete rainbow circle?Selected Answer: the reflection angle limits the arc length
Correct Answer: the reflection angle limits the arc length
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 7 - Interference Colors Review Test Submission: Exercise 07H
Review Test Submission: Exercise 07
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 07Started 10/8/14 10:48 PMSubmitted 10/8/14 10:56 PMStatus CompletedAttempt Score 8 out of 10 points Time Elapsed 8 minutesInstructions
Question 1
Preferential scattering is called Rayleigh Scattering when it is proportional toSelected Answer: the reciprocal of the wavelength to the 4th power
Correct Answer: the reciprocal of the wavelength to the 4th power
Question 2
In thin-film interference with a transparent film, as the film thickness increases many-fold, the reflected colors fromincidentwhite light becomeSelected Answer: white
Correct Answer: white
Question 3
The colors seen in thin silicon oxide layers on silicon are due toSelected Answer: interference
Correct Answer: interference
Question 4
The sky appears blue because ofSelected Answer: preferential scattering of selected wavelengths
Correct Answer: preferential scattering of selected wavelengths
Question 5
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Tuesday, October 28, 2014 9:18:46 PM MST
In birds, preferential scattering leads to a structural color ofSelected Answer: blue
Correct Answer: blue
Question 6
True reflection of light from thin film exhibits various colors dependent onSelected Answer: [None Given]
Correct Answer: film thickness
Question 7
A single wavelength light beam incident on a thin film can have the reflected beam either reinforced diminished depending onSelected Answer: film thickness
Correct Answer: all of the above
Question 8
Compared to the dimensions of the wavelength of light,particles that preferentially scatter blue light are
Selected Answer: smaller
Correct Answer: smaller
Question 9
Light going from lower refractive index air to high refractive index glass has a phase change in the reflected beam ofSelected Answer: one-half wavelength
Correct Answer: one-half wavelength
Question 10
Light of one wavelength incident on a thin film will be reduced in reflection if the waves areSelected Answer: out of phase
Correct Answer: out of phase
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 8 - Color Compisition and Polarized Light Review Test Submission: Exercise 08H
Review Test Submission: Exercise 08
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 08Started 10/16/14 6:39 PMSubmitted 10/16/14 6:50 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 10 minutesInstructions
Question 1
If you take two polarizer films that are transparent to light and you cross them by 90 degrees, the pair willSelected Answer: become opaque
Correct Answer: become opaque
Question 2
The polarizer can transform circularly polarized light intoSelected Answer: linearly polarized light
Correct Answer: linearly polarized light
Question 3
A pair of complementary colors areSelected Answer: blue and yellow
Correct Answer: blue and yellow
Question 4
White light can be produced by two colors.Selected Answer: Yes
Correct Answer: Yes
Question 5
White light reflected from a glass mirror can be polarized
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Tuesday, October 28, 2014 9:19:23 PM MST
Selected Answer: Yes
Correct Answer: Yes
Question 6
For light incident on a glass plate, the Brewster angle is aboutSelected Answer: 56 degrees
Correct Answer: 56 degrees
Question 7
Circularly polarized light reflected at the Brewster angle from a flat sheet of glass will beSelected Answer: fully polarized
Correct Answer: fully polarized
Question 8
The energy levels in the electron transition leading to light emission differ bySelected Answer: one unit of angular momentum
Correct Answer: one unit of angular momentum
Question 9
The Polaroid film used in the optics kit and the lab absorbsSelected Answer: one direction of light oscillations
Correct Answer: one direction of light oscillations
Question 10
The blue color from the sky is due toSelected Answer: scattering
Correct Answer: scattering
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 9 - Optical Spectroscopy, Neon Lights Review Test Submission: Exercise 09H
Review Test Submission: Exercise 09
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 09Started 10/26/14 2:49 PMSubmitted 10/26/14 3:04 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 15 minutesInstructions
Question 1
In solid silicon the outermost electrons are bound by energies of 1.1 eV. Light is absorbed in
Selected Answer: IR portion of the spectrum
Correct Answer: IR portion of the spectrum
Question 2
In silicon the binding energies for the inner-most electrons areSelected Answer: 1.8 eV
Correct Answer: 1.8 eV
Question 3
If you wanted to change the color of a neon light, you wouldSelected Answer: change the gas in the tube
Correct Answer: change the gas in the tube
Question 4
If you observe line spectra, it meansSelected Answer: the electrons have well-defined energy levels
Correct Answer: the electrons have well-defined energy levels
Question 5
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Tuesday, October 28, 2014 9:20:05 PM MST
An optical spectrometer measuresSelected Answer: light wavelength
Correct Answer: light wavelength
Question 6
Light can be described by particle-like behavior orSelected Answer: wave-like behavior
Correct Answer: wave-like behavior
Question 7
The light from a heated tungsten filament lies in the energy region on theSelected Answer: visible spectrum
Correct Answer: visible spectrum
Question 8
Light can be emitted when electrons make the transition between two states. The photon energy is equal toSelected Answer: the difference of energy between the two levels
Correct Answer: the difference of energy between the two levels
Question 9
A semiconductor light emitting diode (LED) is one where light is emitted when
Selected Answer: current flows
Correct Answer: current flows
Question 10
A photon energy of 2eV lies inSelected Answer: the visible portion of the spectrum
Correct Answer: the visible portion of the spectrum
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Part 10 - Electrons in Atoms Review Test Submission: Exercise 10H
Review Test Submission: Exercise 10
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 10Started 10/28/14 9:25 PMSubmitted 10/28/14 9:32 PMStatus CompletedAttempt Score 8 out of 10 points Time Elapsed 6 minutesInstructions
Question 1
The energy of a photon in electron volts is given by the constant 1240 divided bySelected Answer: wavelength (nanometers)
Correct Answer: wavelength (nanometers)
Question 2
Comparing the wave behavior of an electron and a photon, electron and X-ray diffractionSelected Answer: are similar
Correct Answer: are similar
Question 3
The emission of electrons by an excited atomSelected Answer: both of the above
Correct Answer: both of the above
Question 4
Atoms that contain more electrons than that of hydrogen have inner most electrons that areSelected Answer: held less firmly
Correct Answer: held more firmly
Question 5
Atoms that contain more electrons than hydrogen,have K-shell photon emissions compared to that of hydrogen
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Tuesday, October 28, 2014 9:32:33 PM MST
that are
Selected Answer: larger
Correct Answer: larger
Question 6
When you consider the electormagnetic spectrum containg IR and UV light, both are emitted from
Selected Answer: electrons around the atom
Correct Answer: electrons around the atom
Question 7
In the Bohr atom, the ionization energy isSelected Answer: 13.58 eV
Correct Answer: 13.58 eV
Question 8
Balmer radiation refers to light emitted from an excited atom ofSelected Answer: hydrogen
Correct Answer: hydrogen
Question 9
The energy of an electron in a vacuumSelected Answer: is constant
Correct Answer: varies as the velocity squared
Question 10
The photon energy is given by Planck's constant h times to theSelected Answer: frequency
Correct Answer: frequency
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Lesson 11 - Visible Light, IR, X-Rays, UV Review Test Submission: Exercise 11H
Review Test Submission: Exercise 11
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 11Started 11/9/14 3:54 PMSubmitted 11/9/14 3:57 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 3 minutesInstructions
Question 1
The reading for this week covers a wide range of the electromagnetic spectrum. Whichof the four has the longest wavelength?Selected Answer: infrared (IR)Correct Answer: infrared (IR)
Question 2
The amount of x-ray absorption per unit area exposed to the beam depends onSelected Answer: the number of electronsCorrect Answer: the number of electrons
Question 3
Light penetrates through pigments when the energy of the light is inSelected Answer: IRCorrect Answer: IR
Question 4
Compare infrared (IR) and x-ray velocities in vacuum
Selected Answer: both the sameCorrect Answer: both the same
Question 5
The wavelength to energy conversion is " the energy (eV) equals 1240 divided by the wavelength " in wavelength units of?
Selected Answer: nanometersCorrect Answer: nanometers
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Sunday, November 9, 2014 3:57:48 PM MST
Question 6
The reading for this week covers a wide range of the electromagnetic spectrum. Whichof the four has the shortest wavelength?Selected Answer: X-rayCorrect Answer: X-ray
Question 7
The same thickness of iron and lead will absorb the same amount of X-rays.Selected Answer: noCorrect Answer: no
Question 8
The mathematical description of visible light and x-ray absorption is calledSelected Answer: Exponential Decay LawCorrect Answer: Exponential Decay Law
Question 9
Photon absorption in solids depends on the number of electrons that can accept atransfer of energy from the photon. Would youget about the same amount of absorptionof visible light in silicon and silicon dioxide?Selected Answer: noCorrect Answer: no
Question 10
Photon absorption in materials depends primarily onSelected Answer: the sample's electron energy levelsCorrect Answer: the sample's electron energy levels
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Lesson 12 - Optical Microscopy Review Test Submission: Exercise 12H
Review Test Submission: Exercise 12
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 12Started 11/10/14 7:42 PMSubmitted 11/10/14 7:45 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 2 minutesInstructions
Question 1
ResolutionSelected Answer: refers to the detail seen in a sampleCorrect Answer: refers to the detail seen in a sample
Question 2
The maximum magnification of the van Leewenhoek microscope isSelected Answer: 270Correct Answer: 270
Question 3
Highly curved lens surfaces are associated withSelected Answer: both of the aboveCorrect Answer: both of the above
Question 4
The founder of the science of microbiology isSelected Answer: van LeewenhoekCorrect Answer: van Leewenhoek
Question 5
One hundred microns is a length of
Selected Answer: 0.01 centimetersCorrect Answer: 0.01 centimeters
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Monday, November 10, 2014 7:45:49 PM MST
Question 6
A human hair has the diameter of aboutSelected Answer: 70 micronsCorrect Answer: 70 microns
Question 7
What does it mean for a lens to have a negative focal length?SelectedAnswer: focal point is on the same side of the lens from where the object is
placedCorrectAnswer: focal point is on the same side of the lens from where the object is
placed
Question 8
The magnification of a lens isSelected Answer: greater the smaller the focal lengthCorrect Answer: greater the smaller the focal length
Question 9
A simple magnifier can be madeSelected Answer: from a drop of waterCorrect Answer: from a drop of water
Question 10
A human hair has a diameter of about
Selected Answer: 70 micronsCorrect Answer: 70 microns
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Part 13 - Electron Microscopy Review Test Submission: Exercise 13H
Review Test Submission: Exercise 13
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 13Started 11/17/14 12:24 PMSubmitted 11/17/14 12:29 PMStatus CompletedAttempt Score 9 out of 10 points Time Elapsed 4 minutesInstructions
Question 1
In the SEM, the image is formed by a fine electron beam scanned over the sample. Thescan is calledCorrect Answer: raster
Question 2
One attractive feature of optical microscopy isCorrect Answer: ease of use
Question 3
With electronic imaging in the SEM, the images can be madeCorrect Answer: in color
Question 4
The limit on what size can be resolved - irrespective of instrument type is set byCorrect Answer: wavelength
Question 5
What is one of the advantages of electron over optical microscopy?Correct Answer: high resolving power
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Monday, November 17, 2014 12:29:21 PM MST
Question 6
The resolving power of electron microscopes is orders of magnitude better than that ofan optical microscope because the probing beam is orders of magnitude smaller interms ofCorrect Answer: wavelength
Question 7
In electron microscopy, the samples must be covered with a conducting coatingCorrect Answer: true
Question 8
What is one of the disadvantages of electron over optical microscopy?Correct Answer: operates with sample in vacuum
Question 9
The electron mass is about the same asCorrect Answer: neither
Question 10
The three-dimensional appearance in the SEM of the specimen image is a direct resultofCorrect Answer: large depth of field
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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Part 14 - Analysis of Mars and Air Review Test Submission: Exercise 14H
Review Test Submission: Exercise 14
User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 14Started 12/4/14 12:17 PMSubmitted 12/4/14 12:25 PMStatus CompletedAttempt Score 9 out of 10 points Time Elapsed 8 minutesInstructions
Question 1
The electron microprobe requires thatSelected Answer: the samples are coated with a conducting filmCorrect Answer: the samples are coated with a conducting film
Question 2
From the Images of Nature Techniques site, what is the range in microns of 1 MeV Heions in mylarSelected Answer: 20 micronsCorrect Answer: 5 microns
Question 3
From the Images of Nature Techniques site. the PIXE detectors are placed on a LiguidNitrogen cold finger forSelected Answer: to cool the detectorCorrect Answer: to cool the detector
Question 4
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In art museums, PIXE techniques can be used to identify pigments in paintingsSelected Answer: yesCorrect Answer: yes
Question 5
In particle-induced x-ray emmission, the sample analysis can be carried out inSelected Answer: bothCorrect Answer: both
Question 6
Comparing the beam size in the lectron microprobe with that in the x-ray luorescesystem, which has the smaller beam diameterSelected Answer: electron beamCorrect Answer: electron beam
Question 7
Analysis of the moon's surface in 1967 did not requireSelected Answer: both of the aboveCorrect Answer: both of the above
Question 8
The remote sensing on Mars Sojourner Rover has a radioactive source the emitsSelected Answer: alpha particlesCorrect Answer: alpha particles
Question 9
The identification of an element from emission of characteristic x-rays requires a sourceof energeticSelected Answer: any of the aboveCorrect Answer: any of the above
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Thursday, December 4, 2014 12:25:30 PM MST
Question 10
The moon in 1967 and Mars in 1997 and 2004 were bombarded by radioactive sourcesin order to determineSelected Answer: composition of the soilCorrect Answer: composition of the soil
OKOK
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