exam 1

Question 1

compound microscope

Answer 1

used to view thin specimens such as a section of tissue or small organisms

Question 2

oculars

Answer 2

part of the microscope to which you put your eyes on

Question 3

objectives

Answer 3

magnify the sample

Question 4

stage

Answer 4

horizontal surface on which the microscope slide is placed

Question 5

stage clip

Answer 5

holds the slide in place

Question 6

stage adjustment knobs

Answer 6

hang down from the side of the stage, one know moves the slide left to right and the other front to back

Question 7

coarse focus knob

Answer 7

moves the stage quickly

Question 8

fine focus knob

Answer 8

moves the stage slowly

Question 9

illuminator

Answer 9

microscope light source

Question 10

iris diaphragm

Answer 10

used to adjust the size of the circle of light entering the stage

Question 11

condenser

Answer 11

collects and focuses the light from the illuminator

Question 12

rheostat

Answer 12

adjusts the brightness of the light

Question 13

base

Answer 13

bottom of the microscope

Question 14

arm

Answer 14

vertical bar of the microscope

Question 15

total magnification

Answer 15

the amount the image is enlarged, the objective times the ocular magnification

Question 16

resolving power

Answer 16

the ability to distinguish features that are close together as separate

Question 17

field of view

Answer 17

how much of the sample can be viewed in the x,y directions

Question 18

parfocal

Answer 18

the field of view remains in focus when the objectives are changed

Question 19

parcentral

Answer 19

when the center of the field of view stays in place when the objective is changed

Question 20

contrast

Answer 20

the range of light in an image, from the brightest white to the darkest black

Question 21

depth of field

Answer 21

how much of the sample in the z direction is in focus

Question 22

how depth of field changes with magnification

Answer 22

the depth of field decreases as magnification increases; the greater the magnification, the smaller the depth of field

Question 23

how filed of view changes with magnification

Answer 23

the field of view decreases as magnification increases; the greater the magnification, the smaller the field of view

Question 24

accuracy

Answer 24

how close you are to the true value

Question 25

precision

Answer 25

how close repeated measurements are

Question 26

steps of the scientific method

Answer 26

question, hypotheis, experiment, observation, interpret, conclusion

Question 27

1 mL

Answer 27

1 cm^3

Question 28

1 in (mm)

Answer 28

25.4 mm

Question 29

1 in (cm)

Answer 29

2.5 cm

Question 30

celcius

Answer 30

-32 times 5/9

Question 31

density of water

Answer 31

1.0 g/mL
1mL = 1g

Question 32

independent variable

Answer 32

x-axis

Question 33

dependent variable

Answer 33

y-axis