exam 1 Flashcards

1
Q

compound microscope

A

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

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2
Q

oculars

A

part of the microscope to which you put your eyes on

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3
Q

objectives

A

magnify the sample

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4
Q

stage

A

horizontal surface on which the microscope slide is placed

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5
Q

stage clip

A

holds the slide in place

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6
Q

stage adjustment knobs

A

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

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7
Q

coarse focus knob

A

moves the stage quickly

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8
Q

fine focus knob

A

moves the stage slowly

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9
Q

illuminator

A

microscope light source

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10
Q

iris diaphragm

A

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

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11
Q

condenser

A

collects and focuses the light from the illuminator

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12
Q

rheostat

A

adjusts the brightness of the light

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13
Q

base

A

bottom of the microscope

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14
Q

arm

A

vertical bar of the microscope

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15
Q

total magnification

A

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

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16
Q

resolving power

A

the ability to distinguish features that are close together as separate

17
Q

field of view

A

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

18
Q

parfocal

A

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

19
Q

parcentral

A

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

20
Q

contrast

A

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

21
Q

depth of field

A

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

22
Q

how depth of field changes with magnification

A

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

23
Q

how filed of view changes with magnification

A

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

24
Q

accuracy

A

how close you are to the true value

25
Q

precision

A

how close repeated measurements are

26
Q

steps of the scientific method

A

question, hypotheis, experiment, observation, interpret, conclusion

27
Q

1 mL

A

1 cm^3

28
Q

1 in (mm)

A

25.4 mm

29
Q

1 in (cm)

A

2.5 cm

30
Q

celcius

A

-32 times 5/9

31
Q

density of water

A

1.0 g/mL
1mL = 1g

32
Q

independent variable

A

x-axis

33
Q

dependent variable

A

y-axis