Exam 8: The Microscope

As magnifying power increases, the microscope's depth of focus decreases.

A transparent specimen is viewed through a microscope using ________ light while an opaque object requires ________ illumination.

A microscope with which light source, when linked to a spectrophotometer, will provide a "fingerprint" spectrum of the object being viewed?

The magnification power of a microscope equals the magnifying power of the objective lens multiplied by two.

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 -Comparison microscope

A virtual image can be seen directly with the naked eye.

Which microscope plots an absorption spectrum of the item under examination?

The lens nearest the specimen is called the ocular lens.

The major advantages of the SEM image include all of the following EXCEPT:

A 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:

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 -Stereoscopic microscope

Discuss some advantages and disadvantages of using a stereoscopic microscope. What is an example of evidence you may examine using a stereoscopic microscope?

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 -Field of view

What are the two categories of pollen-producing plants? Which type of pollen is useful for identifying a geographical origin? Which type is deposited on clothing or objects only by direct contact with the plant?

The ________ allows the forensic scientist to view a particle under a microscope while at the same time obtaining its absorption spectrum.

A ________ uses a stream of electrons to create an image of the specimen being studied.

The condenser of a compound microscope is located:

The ________ lens magnifies the real, enlarged image created by the objective lens, producing a greatly enlarged virtual image of the object.

A compound microscope produces greater magnification because it uses two lenses to enlarge the object being viewed instead of just one.

In order to examine an opaque object with a compound microscope, one must: