Chapter 3

Question 1

a precision instrument that should be handled with care

Answer 1

compound microscope

Question 2

hold it in an upright position, with one hand on its arm and the other supporting its base

Answer 2

transporting microscope

Question 3

begin the focusing process with the ____ lens

Answer 3

scanning

Question 4

use the ___ adjustment knob only with the scanning objective lens

Answer 4

coarse

Question 5

magnification is achieved by the interplay of ___ lenses

Answer 5

two

Question 6

the magnification uses two lenses called the ___ lens and the ___ lens

Answer 6

ocular and objective

Question 7

the objective lens magnifies the specimen to produce a ___ ____

Answer 7

real image

Question 8

the ____ ______ of any specimen being viewed is equal to the power of the ocular lens multiplied by the power of the objective lens used

Answer 8

total magnification

Question 9

the power of the ____ multiplied by power of the ___ gives you the total magnification

Answer 9

ocular lens ; objective lens

Question 10

the ability to discriminate two close objects as separate

Answer 10

resolution

Question 11

resolution is determined by the amount and physical properties of the ____ light that enters the microscope

Answer 11

visible

Question 12

the bottom of the microscope, provides a sturdy flat surface to support and steady the microscope

Answer 12

base

Question 13

located in the base; the light from the lamp passes directly upward through the microscope

Answer 13

substage light

Question 14

located on the base or arm, this dial allows you to adjust the intensity of the light passing through the specimen

Answer 14

light control

Question 15

the platform that the slide rests on while being viewed; the stage has a hole in it to allow light to pass through the specimen

Answer 15

stage

Question 16

holds the slide in position for viewing and has two adjustable knobs that control the precise movement of the slide

Answer 16

mechanical stage

Question 17

small nonmagnifying lens located beneath the stage that concentrates the light on the specimen

Answer 17

condenser

Question 18

a shutter with the condenser that can be controlled by a lever to adjust the amount through the condenser

Answer 18

iris diaphragm lever

Question 19

knob that allows you to make large adjustments to the height of the stage to initially focus your specimen

Answer 19

coarse adjustment knob

Question 20

knob is used for precise focusing once the initial coarse focusing has been completed

Answer 20

fine adjustment knob

Question 21

attaches to the nosepiece to support the objective lens system; also provides for attachment of the eyepieces

Answer 21

head

Question 22

depth of field

Answer 22

the thickness of the plane that is clearly in focus

Question 23

as magnification increases, depth of field ____

Answer 23

decreases

Question 24

size of the objective lens aperture decreases with ____ magnification

Answer 24

increasing