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Physics Flashcards

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1
Q

When multiplying or dividing

A

Use smallest amount of sig digs

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2
Q

When adding or subtracting

A

Use largest amount of sig digs

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3
Q

Sig Dig practice - 60

A

1

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4
Q

Sig Dig practice - 305

A

3

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5
Q

Sig Dig practice - 5.0

A

2

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6
Q

Sig Dig practice - 0.1

A

1

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7
Q

Sig Dig practice - 1.10

A

3

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8
Q

Sig Dig practice - 0.017

A

2

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9
Q

Sig Dig practice - 102.5

A

4

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10
Q

Sig Dig practice - 60.80

A

4

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11
Q

Wave

A

Disturbance that carries energy from one location to another

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12
Q

The medium

A

Material the disturbance travels through

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13
Q

Wavelength

A

The distance between one crest to the next (λ)

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14
Q

Amplitude

A

The maximum displacement

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15
Q

Period

A

The time it takes on complete wavelength to pass a single point (T)

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16
Q

Frequency

A

Number of complete wavelengths that pass a single point in one second (f)

Measured in herts (Hz)

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17
Q

Speed equation

A

V = d/t = λ/T = λf

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18
Q

Speed of light in vacuum (V)

A

3.0 x 10^8

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19
Q

The angle of incidence is always equal to

A

Angle of reflection

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20
Q

SALT

A

S ize
A ttitude (inverted)
L (f)
T ype (real)

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21
Q

Concave mirror

A

Curved mirror with reflective surface on inside (can form real and virtual images)

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22
Q

Convex mirror

A

Curved mirror with reflective surface on outside (always forms virtual, small image)

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23
Q

Point C

A

Centre of curvature

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24
Q

Point F

A

Focal point

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25
Q

Real image is formed when

A

Light rays converge at the location of the image

26
Q

Virtual image is formed when

A

Light rays diverge from a point

27
Q

Index of refraction (n)

A

The ratio of the speed of light in a vacuum to the speed in a material (c)

28
Q

Index of refraction equation (n)

A

n = c/v

29
Q

Snells law

A

nisinθi = nrsinθr

30
Q

How to solve for c using n = c/v

A

(c = nv)

31
Q

How to solve for v using n = c/v

A

(v = c/n)

32
Q

Angle of incidence

A

θi

33
Q

Angle of refraction

A

θr

34
Q

Critical angle

A

θc

35
Q

Total internal reflection

A

If a ray is traveling from a more-dense material to a less-dense material it will bend away from the normal

(Occurs when incident angle is larger than critical angle)

36
Q

Critical angle equation

A

nisinθc = nrsin90 (θc = sin-1 (nr/ni))

37
Q

Converging lens

A

Focuses parallel rays to a single point and can form a real image

38
Q

Diverging lens

A

Will always form a virtual image

39
Q

Magnification

A

The ratio of the image height to the object height (m = hi/ho = - di/do)

40
Q

The mirror/lens equation

A

1/f = 1/di + 1/do

41
Q

Cornea

A

A thin protective membrane that refracts light

42
Q

Iris

A

Controls light entering

43
Q

Pupil

A

The opening for light

44
Q

Retina

A

The ‘screen’ on which images are formed (images are always real)

45
Q

Farsightedness

A

The inability of an eye to focus on near objects (hyperopia)

Fixed by converging lens

46
Q

Nearsightedness

A

The inability of an eye to focus on far objects (myopia)

Fixed by diverging lens

47
Q

Plane mirror

A

Always does virtual upright image

48
Q

Compound microscope contains __ lenses

A

2 converging lenses

49
Q

Dispersion

A

Dispersion can occur when white light is refracted

50
Q

Crest/trough

A

The points of maximum displacement

51
Q

Speed of light in vacuum

A

3.0 x 108 m/s

52
Q

Types of waves

A
  • radiowaves
  • microwaves
  • Infrared waves
  • ultraviolet rays
  • x-rays
  • gamma rays
53
Q

White light

A

Light is reflected (can be produced by 3 primary colours)

54
Q

Black (light)

A

Light is absorbed

55
Q

Lens

A

Refracts light rays to form an image

56
Q

Incandescent

A

Light produced by an object at high temperature

57
Q

Flourescent

A

Light produced by substances that are exposed to electromagnetic radiation

58
Q

Phosphorescent

A

Materials that glow in the dark after being exposed to electromagnetic radiation

59
Q

Chemiluminescent

A

Light produced from a chemical reaction without a rise in temperature

60
Q

Bioluminescent

A

The ability of a plant or animal to produce light

61
Q

Triboluminescence

A

Production of light from friction

62
Q

LED

A

Light emitting diode transforms electrical energy directly into light energy

Science (5 decks)

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