Parts and function

Question 1

One or more lenses that makes an enlarged image of an object

Answer 1

Microscope

Question 2

What are the four types of microscope

Answer 2

• Simple
• Compound
• Stereoscopic
• Electron

Question 3

• Similar to a magnifying glass and has

only one lens.

Answer 3

Simple Microscope

Question 4

• Lets light pass through an object and

then through two or more lenses.

Answer 4

Compound Microscope

Question 5

• Gives a three dimensional view of an

object. (Examples: insects and leaves)

Answer 5

Stereoscopic Microscope

Question 6

• Uses a magnetic field to bend beams of electrons instead of using
lenses to bend beams of light.

Answer 6

Electron Microscope

Question 7

—The part you
look at with your eye.
Usually 10 X magnification.

Answer 7

Eye Piece

Question 8

– Used to safely

transport microscope

Answer 8

Arm

Question 9

– Slides are

placed on this

Answer 9

Stage

Question 10

–
Used to make large changes
in focus. NOTE Never use this
when viewing on high power

Answer 10

Coarse Adjustment

Question 11

–
Used for small adjustments
of focus

Answer 11

Fine Adjustment

Question 12

– Used to safely

transport the microscope

Answer 12

Base

Question 12

– Reflects

light up to the viewers eye

Answer 12

Body Tube

Question 13

– Allows for

quick change of objectives

Answer 13

Nose Piece

Question 14

–
The first lens you use when
doing proper microscope
work. Usually 4 X

Answer 14

Low Power Objective

Question 15

– The second
lens you use when doing
proper microscope work.
Usually 10 X

Answer 15

Medium Power

Objective

Question 16

– The
highest magnification used.
Usually 43 X. NEVER use the
course adjustment when using
this lens.

Answer 16

High Power Objective

Question 17

– Used to

keep the slide in place.

Answer 17

Stage Clips

Question 18

– Used to vary
the amount of light passing
through the slide. Usually it is
better if the amount of light is
low.

Answer 18

Diaphragm

Question 19

– Sends
light up through the
diaphragm and through the
slide for viewing

Answer 19

Light Source

Question 20

To calculate the power of magnification, multiply the power of the ____ by the power of the ___.

Answer 20

ocular lens; objective

Question 21

the part that extends upwards from the base to

support all other parts, and to hold the stage

Answer 21

Pillar

Question 22

• the portion that allows tilting of the microscope at a desired angle

Answer 22

Inclination hinge or joint

Question 23

• a small tube attached above the body tube wherein the ocular or the eyepiece is placed

Answer 23

Draw tube

Question 24

• the wheels that raise or lower the tube

Answer 24

Adjustments

Question 25

changes the elevation of the tube rapidly for preliminary focusing

Answer 25

coarse adjustment

Question 26

-permits gradual changes in the elevation on the tube for final and accurate focusing

Answer 26

fine adjustment

Question 27

• the circular disc above the resolving nosepiece to protect the objectives from dust particles

Answer 27

Dust shield

Question 27

• carries the objectives, and turns them

Answer 27

-Revolving nosepiece

Question 28

• a small tube consisting of lenses, that indicate the relative power of magnification

Answer 28

Ocular or eyepiece

Question 29

-refer to the cylindrical tubes attached to the revolving nosepiece for initial magnification of the image

Answer 29

Objectives

Question 30

-views the specimen in a larger field

Answer 30

Low Power Objective

Question 31

-obtains greater magnification and views detailed structures of the specimen.

Answer 31

High Power Objective

Question 32

• obtains greater magnification than HPO. In using this, a drop of oil is placed on the slide for better refraction.

Answer 32

Oil Immersion Objective

Question 33

-it reflects light rays through the object. One side of the mirror is plain (used with ____); the other is ____ (used with artificial light)

Answer 33

Mirror

natural light; concave

Question 34

• the part used primarily for focusing light rays upon the specimen.

Answer 34

Sub-stage

Question 35

• made up of a number of thin pieces of metal operated by a lever used for regulating the amount of light necessary to obtain a clear view of the specimen.

Answer 35

Irish diaphragm

Question 36

-lens or series of lenses mounted in substage attachment for the purpose of concentrating light upon the object to be examined. they are valuable with high power objectives and oil-immersion lenses.

Answer 36

Condenser