Microsope Quiz

Question 1

Short tubes containing lenses that are closest to your eyes. These lenses can be varied in magnification(5X, 10X, or 15X) but ours are all 10X magnification

Answer 1

Eyepiece(oculars)

Question 2

That portion of the frame of the microscope that holds the eyepieces and the nosepiece holding the objectives the proper distance apart. Because of this special distance, our microscopes are what is known as “parfocal”, meaning that once you have the right focus in a lower power, the distance is the same for the higher powers. All you need to do is rotate the nosepiece and sharpen the image.

Answer 2

Body Tube

Question 3

A ring at the base of the body tube onto which the objectives are mounted. It rotates so that you can easily change from one objective to the next.

Answer 3

Nosepiece

Question 4

Tubes of varying lengths attached to the nosepiece that each have a different magnifying lens within. Ours all have 4X, 10X, and either 40X or 43X. In addition, some have a fourth objective with a 100X lens. By rotating the nosepiece, these are interchangeable.

Answer 4

Objectives

Question 5

The black flat surface with a hole through it on which the slide holding the specimen rests.

Answer 5

Stage

Question 6

The diaphragm allows the amount of light coming up through the slide to be varied for improved viewing. The variation is done by either moving a small lever back and forth or on a few, by turning a ring surrounding the diaphragm. In general, specimens that are translucent are better seen with a lower light adjustment.

Answer 6

Diaphragm/Diaphragm lever

Question 7

The stable “foot” on which the microscope rests. One of the points for holding on when carrying the microscope.

Answer 7

Base

Question 8

The upright support of the microscope. One of the points for holding on when carrying the microscope. It keeps all of the other parts the right distance apart.

Answer 8

Arm

Question 9

The knob to turn when first finding a specimen in focus. The knob can be used with the 4X and 10X objectives, but not with the 40X or 100X objectives. With most of our microscopes, this knob moves the stage up and down but in a few of them, it moves the nosepiece up and down. In general, its job is to change the distance between the objectives and the specimen.

Answer 9

Coarse Adjustment Knob

Question 10

The knob to turn when fine tuning (sharpening) the focus. This is the only knob to turn when the 40X or 100X objectives are in place. (Using the coarse adjustment runs the risk of moving the longer objectives into the slide, possibly breaking the slide or scratching the lenses of the objectives.)

Answer 10

Fine Adjustment Knob

Question 11

Provides the illumination that passes up through the specimen to make it visible.

Answer 11

Electric Lamp

Question 12

The clip and frame device that holds the slide securely and allows you to move the slide easily in any direction.

Answer 12

Mechanical Stage

Question 13

Two knobs, one above the other, that turn to allow you to move the mechanical stage (& therefore the slide) in any direction. One knob moves the stage forward and back, the other moves the stage side to side.

Answer 13

Mechanical Stage “Drivers”