Question 1

As magnifying power increases, the microscope's field of view also increases.

Accepted Answer

A) True 
 B)False

Question 2

Crystals that are ________ produce two planes of polarized light, each perpendicular to the other.

Accepted Answer

A) Amorphous 
B) Solid 
C) Birefringent 
D) Colored

Question 3

The stereoscopic microscope has a narrow field of view.

Accepted Answer

A) True 
 B)False

Question 4

Normally with a polarizing microscope, the polarizer and analyzer are set:

Accepted Answer

A) Parallel to each other. 
B) So that maximum plane polarized light can reach the eyepiece. 
C) Perpendicular to each other. 
D) So that they are in constant motion.

Question 5

Unique shapes, aperture type, and surface ________ are typically used to identify spore samples.

Accepted Answer

The answer of Unique shapes, aperture type, and surface ________...

Question 6

When the SEM's primary electron beam bombards a specimen, it causes the emission of:

Accepted Answer

A) Electrons from elements of the upper layer of the specimen. 
B) X-rays from the target. 
C) Gamma rays from the target. 
D) Both A and B

Question 7

Briefly describe how a comparison microscope works and what it is used for.

Accepted Answer

The answer of Briefly describe how a comparison microscope works...

Question 8

Components of a compound microscope include all of the following EXCEPT:

Accepted Answer

A) Expander. 
B) Stage. 
C) Coarse adjustment. 
D) Condenser.

Question 9

Bullets fired through the same barrel display comparable markings, called striations, caused by the rifling of the barrel.

Accepted Answer

A) True 
 B)False

Question 10

Which microscope provides a right-side-up image?

Accepted Answer

A) Comparison 
B) Stereoscopic 
C) Compound 
D) Polarizing

Question 11

A microscope uses a combination of ________ to magnify an image.

Accepted Answer

A) Stages 
B) Mirrors 
C) Lenses 
D) Confocals

Question 12

The scanning electron microscope produces an image by aiming a beam of electrons onto a specimen.

Accepted Answer

A) True 
 B)False

Question 13

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:

Accepted Answer

A) 0)65. 
B) 3)00. 
C) 30.00. 
D) 0)75.

Question 14

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once.
A)Size of the specimen area being observed
B)Provides a simultaneous view of two specimens
C)Space between the specimen and objective lens
D)Illumination required to view a transparent object
E)Illumination of a specimen from above
F)The thickness of a specimen in focus
G)Eyepiece multiplied by objective lens
H)The image seen through a compound microscope
I)The lower lens of a microscope positioned directly over the specimen
J)Presents a distinctive three-dimensional image
K)Used to examine birefringent materials
L)Image formed by the actual convergence of light rays on a screen
-Transmitted illumination

Accepted Answer

The answer of Match the word in Column 1 to...

Question 15

It is not possible to identify a geographical origin by the type and percentages of airborne pollen grains.

Accepted Answer

A) True 
 B)False

Question 16

Indicate what type of microscope (compound, comparison, stereoscopic, or polarizing light)should be used to analyze each of the following items of evidence:
a. fired bullets
b. a synthetic fiber
c. soil minerals
d. paint chips
e. a shed head hair

Accepted Answer

The answer of Indicate what type of microscope (compound, comparison,...

Question 17

Which of the following statements is FALSE?

Accepted Answer

A) If the polarizer and analyzer of a polarizing microscope are placed parallel to each other, no light will penetrate. 
B) Light confined to a single plane of vibration is said to be polarized. 
C) Many crystals are birefringent. 
D) The lens nearest the specimen is called the objective lens.

Question 18

Imagine you are placing a slide on a compound microscope for examination. Describe each part of the microscope you would handle and adjust to complete this process.

Accepted Answer

The answer of Imagine you are placing a slide on...

Question 19

What is the most important tool of the firearms examiner?

Accepted Answer

A) Compound microscope 
B) Comparison microscope 
C) Stereoscopic microscope 
D) Polarizing microscope

Question 20

A(n)________ image is an image formed when light rays converge on a surface.

Accepted Answer

The answer of A(n)________ image is an image formed when...

Exam 8: The Microscope

As magnifying power increases, the microscope's field of view also increases.

Crystals that are ________ produce two planes of polarized light, each perpendicular to the other.

The stereoscopic microscope has a narrow field of view.

Normally with a polarizing microscope, the polarizer and analyzer are set:

Unique shapes, aperture type, and surface ________ are typically used to identify spore samples.

When the SEM's primary electron beam bombards a specimen, it causes the emission of:

Briefly describe how a comparison microscope works and what it is used for.

Components of a compound microscope include all of the following EXCEPT:

Bullets fired through the same barrel display comparable markings, called striations, caused by the rifling of the barrel.

Which microscope provides a right-side-up image?

A microscope uses a combination of ________ to magnify an image.

The scanning electron microscope produces an image by aiming a beam of electrons onto a specimen.

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:

It is not possible to identify a geographical origin by the type and percentages of airborne pollen grains.

Indicate what type of microscope (compound, comparison, stereoscopic, or polarizing light)should be used to analyze each of the following items of evidence: a. fired bullets b. a synthetic fiber c. soil minerals d. paint chips e. a shed head hair

Which of the following statements is FALSE?

Imagine you are placing a slide on a compound microscope for examination. Describe each part of the microscope you would handle and adjust to complete this process.

What is the most important tool of the firearms examiner?

A(n)________ image is an image formed when light rays converge on a surface.