-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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?
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
Tuesday, October 28, 2014 9:14:14 PM MST
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.
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
0 out of 1 points
0 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
0 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
0 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
OKOK
1 out of 1 points
1 out of 1 points
0 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
0 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
1 out of 1 points
-
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
1 out of 1 points