Copiar e Editar

Forensic Science Chapter 7

Descrição

Quiz sobre Forensic Science Chapter 7, criado por cheetahgoddess em 01-10-2014.
cheetahgoddess
Quiz por cheetahgoddess, atualizado more than 1 year ago
cheetahgoddess
Criado por cheetahgoddess quase 10 anos atrás
831
0
0

Resumo de Recurso

Questão 1

Questão
compound microscope is equipped with two objective lenses (10x and 45x) and has a 10x ocular lens. The highest magnification attainable with this instrument is:
Responda
  • 65x
  • 100x
  • 650x
  • 450x

Questão 2

Questão
In order to examine an opaque object with a compound microscope, one must:
Responda
  • Use transmitted illumination.
  • Light the object from beneath the stage.
  • Use reflected illumination.
  • Stain the object before viewing it.

Questão 3

Questão
A parfocal microscope:
Responda
  • Eliminates the need to stain the specimen to be viewed.
  • Has two ocular lenses.
  • Requires a polarized light source.
  • Allows for ease of focusing when switching from low to high power.

Questão 4

Questão
As the magnification of the compound microscope is increased, the field of view:
Responda
  • Decreases
  • Remains the same
  • Increases
  • Becomes more focused

Questão 5

Questão
As the magnifying power of the compound microscope increases, the depth of focus:
Responda
  • Remains the same
  • Decreases
  • Increases
  • Becomes less focused

Questão 6

Questão
A comparison microscope designed to examine bullets and fibers is equipped with:
Responda
  • Vertical illumination.
  • Transmitted illumination.
  • Oblique illumination.
  • Both A and B.

Questão 7

Questão
When using a compound microscope, the areas above and below the depth of focus are best viewed by adjusting the:
Responda
  • Eyepiece lens.
  • Fine or coarse adjustment.
  • Intensity of the illumination.
  • Numerical aperture.

Questão 8

Questão
Which microscope has the largest potential working distance?
Responda
  • Steroscopic
  • Comparison
  • Polarizing
  • Compound

Questão 9

Questão
Which microscope provides a right-side-up image?
Responda
  • Comparison
  • Steroscopic
  • Compound
  • Polarizing

Questão 10

Questão
In the design of a polarizing microscope, the polarizer is placed between the:
Responda
  • Specimen and the analyzer.
  • Analyzer and the eyepiece.
  • Light source and the sample stage.
  • Sample stage and the analyzer.

Questão 11

Questão
Normally with a polarizing microscope, the polarizer and analyzer are set:
Responda
  • Parallel to each other.
  • So that maximum plane polarized light can reach the eyepiece.
  • Perpendicular to each other.
  • So that they are in constant motion.

Questão 12

Questão
Which microscope is best suited to the study of birefringent minerals and fibers?
Responda
  • Stereoscopic
  • Microspectrophotometer
  • Polarizing
  • Comparison

Questão 13

Questão
The condenser of a compound microscope is located:
Responda
  • At the base.
  • Within the body tube.
  • Beneath the stage.
  • Between the coarse and fine adjustments.

Questão 14

Questão
Which microscope plots an absorption spectrum of the item under examination?
Responda
  • Polarizing
  • Comparison
  • Stereoscopic
  • Microspectrophotometer

Questão 15

Questão
A microscope with which light source, when linked to a spectrophotometer, will provide a "fingerprint" spectrum of the object being viewed?
Responda
  • Visible
  • Plane polarized
  • IR (infrared)
  • UV (ultraviolet)

Questão 16

Questão
_____ are used to focus the SEM (scanning electron microscope).
Responda
  • Analyzers
  • Lenses
  • Polarizers
  • Magnets

Questão 17

Questão
The image produced by an SEM is initially displayed on:
Responda
  • An X-ray analyzer.
  • Photographic paper.
  • An X-ray film.
  • A cathode ray tube.

Questão 18

Questão
The microscope that provides the highest resolution and greatest depth of focus is the:
Responda
  • SEM
  • Comparison
  • Compound
  • Steroscopic

Questão 19

Questão
Which microscope can be linked to an X-ray analyzer?
Responda
  • SEM
  • Microspectrophotometer
  • Steroscopic
  • Polarizing

Questão 20

Questão
Which microscope is most likely to be used as a tool for determining whether or not a suspect has recently fired a gun?
Responda
  • Comparison
  • Polarizing
  • SEM
  • Steroscopic

Questão 21

Questão
When the SEM's primary electron beam bombards a specimen, it causes the emission of:
Responda
  • Electrons from elements of the upper layer of the specimen.
  • X-rays from the target.
  • Gamma rays from the target.
  • Both A and B.

Questão 22

Questão
Richard Bruno Hauptmann was convicted of the kidnap and murder of the Lindbergh child in part on the basis of optical examination of:
Responda
  • GSR (gunshot residue)
  • Wood
  • Hair
  • Fibers

Questão 23

Questão
A microscope uses a combination of _____ to magnify an image.
Responda
  • Stages
  • Mirrors
  • Lenses
  • Confocals

Questão 24

Questão
A type of image that cannot be viewed directly is called a(n) ___________ image.
Responda
  • Real
  • Imaginary
  • Reflected
  • Virtual

Questão 25

Questão
A transparent specimen is viewed through a microscope using _____ light while an opaque object requires _____ illumination.
Responda
  • Transmitted; stereoscopic
  • Confocal; transmitted
  • Vertical; horizontal
  • Transmitted; vertical

Questão 26

Questão
The size of the specimen area in view is known as the:
Responda
  • Depth of field.
  • Field of view.
  • Stage size.
  • Objective.

Questão 27

Questão
Crystals that are _____ produce two planes of polarized light, each perpendicular to the other.
Responda
  • Amporphous
  • Solid
  • Birefringent
  • Colored

Questão 28

Questão
If crystals of unknown origin are viewed under a polarizing microscope and appear dark, what can be concluded about the crystals?
Responda
  • The crystals are not heroin crystals
  • The crystals are colorless
  • The crystals are polarizing
  • The crystals are non-polarizing

Questão 29

Questão
What instrument can be used to view a single fiber found at a crime scene and identify its generic class?
Responda
  • Infrared microspectrophotometer
  • Stereoscopic microscope
  • Polarizing microscope
  • Both a and c

Questão 30

Questão
The major advantages of the SEM image include all of the following except:
Responda
  • High magnification.
  • High reproducibility.
  • High resolution.
  • Great depth of focus.

Questão 31

Questão
Components of a compound microscope include all of the following except:
Responda
  • Expander.
  • Stage.
  • Coarse adjustment.
  • Condenser.

Questão 32

Questão
An objective lens with a numerical aperture of 1.50 can separate details at half the distance of a lens with a numerical aperture of:
Responda
  • 0.65
  • 3.00
  • 30.00
  • 0.75

Questão 33

Questão
An object with the letter "L" is viewed under low power of a compound microscope. The image would appear as:
Responda
  • Regular
  • Upside-down, Flipped
  • Upside-down
  • Flipped

Questão 34

Questão
The magnification power of a microscope equals the magnifying power of the:
Responda
  • Eyepiece lens.
  • Objective lens.
  • Objective lens multiplied by two.
  • Objective lens multiplied by the eyepiece lens.

Questão 35

Questão
The microscope examination of a bullet requires:
Responda
  • Transmitted light.
  • Reflected light.
  • Condensed light.
  • All of the above.

Questão 36

Questão
Which of these is not part of the optical system of a compound microscope?
Responda
  • Abbé condenser
  • Objective lens
  • Eyepiece lens
  • The body tube

Questão 37

Questão
Which of the following statements is false?
Responda
  • If the polarizer and analyzer of a polarizing microscope are placed parallel to each other, no light will penetrate.
  • Light confined to a single plane of vibration is said to be polarized.
  • Many crystals are birefringent.
  • The lens nearest the specimen is called the objective lens.

Questão 38

Questão
The most important tool of the firearms examiner is the:
Responda
  • Compound microscope.
  • Comparison microscope.
  • Stereoscopic microscope.
  • Polarizing microscope.

Questão 39

Questão
Which of the following is false?
Responda
  • The scanning electron microscope (SEM) produces an image by aiming a beam of electrons onto a specimen.
  • The major attraction of the SEM is its high magnification and depth of field.
  • The SEM produces an image that is stereoscopic in appearance.
  • Microwaves are generated when the electron beam of the SEM strikes a target.

Questão 40

Questão
Palynology is the study of:
Responda
  • Fish
  • Insects
  • Birds
  • Spores

Questão 41

Questão
Which type of pollen is rarely deposited on objects except by direct contact with the plant?
Responda
  • Anemophilous
  • Exine
  • Entomophilous
  • Gameotphyte

Questão 42

Questão
The pattern of the pollen grain surface is called:
Responda
  • Sculpturing.
  • Apertures.
  • Exine.
  • Pollen rain.

Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.

Semelhante

ELETRICIDADE
Alessandra S.
Funções administrativas
brunocmt
Edital da ReceitaFederal Auditor Fiscal
Alessandra S.
English General Quiz
Luiz Fernando
Técnico em Segurança do Trabalho
Cleber Scarduell
Leis de Newton.
GoConqr suporte .
Fórmulas de Física
GoConqr suporte .
Mapa Conceitual
Eduardo Morais
Flashcard Clinica Médica
marcelargondim
Quiz - Simple Past
HoL
EA-HSG-2012
carloshenriquetorrez .
Explore a Biblioteca