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Grade 10 Science > Physics Optics Chapter 11 Test > Flashcards

Physics Optics Chapter 11 Test Flashcards

1
Q

What is light

A

Light is an electromagnetic wave that can be detected by the human eye. Light is energy.

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2
Q

What is a Medium

A

any physical substance through which energy can be transferred

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3
Q

What is an electromagnetic wave?

A

A wave with both electric and magnetic parts that does not require a medium to transmit

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4
Q

What is a wave

A

A wave is a disturbance that transfers energy from one point to another without transferring matter

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5
Q

What is the electromagnetic spectrum?

A

The term used by scientists to describe the entire range of light that exists

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6
Q

What is white light

A

All colours of light in the visible light spectrum

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7
Q

What are radio waves used for

A
  • AM/FM signals
  • TV Signals
  • Cellphone communication
  • Radar
  • Astronomy (ie discovery of pulsars)
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8
Q

What are microwaves used for?

A
  • Telecommunications
  • Microwave Ovens
  • Astronomy (associated w the Big Bang )
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9
Q

What is infrared light used for?

A
  • remote controls
  • lasers
  • heat detection
  • keeps food warm
  • Astronomy (discovering chemical composition of celestial bodies)
  • Physio
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10
Q

What is visible light used for?

A
  • human vision
  • theatre/concert lighting
  • rainbows
  • visible lasers
  • astronomy (ex optical telescopes
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11
Q

What is ultraviolet light used for?

A
  • tan and sunburn
  • Increases the risk of developing skin cancer
  • production of vitamin D
  • “Black lights”
  • ultraviolet lasers
  • Astronomy (discovering chemical composition)
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12
Q

What are X-Rays used for

A
  • Medical imaging
  • Security equipment
  • Cancer treatment
  • Astronomy (study of star systems, black holes and centres of galaxies)
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13
Q

What are gamma rays used for?

A
  • Cancer treatment
  • Astronomy (study of nuclear porcesses)
  • is Product of a some nuclear decay
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14
Q

What does Luminous mean?

A

Something that produces its own light

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15
Q

Source of light: Incandescence

A
  • The production of light as a result of a high temperature
    Ex: Flame on a candle
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16
Q

Source of light: Electric Discharge

A
  • The process of of producing light by passing an electric current through a gas
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17
Q

Source of Light: Phosphorescence

A
  • Producing light light by the absorption of ultraviolet light and slowly releasing visible light at a lower energy. Over an extended period of time (Glow in the dark)
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18
Q

Source of light: Flouresence

A
  • The immediate emission of visible light as a result of the absorption of ultraviolet light.
  • When objects absorb ultraviolet light and immediately release the energy as visible like (ex fluorescent light bulbs, highlighter)
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19
Q

Source of Light: Chemiluminescence

A

A chemical reaction that directly produces light with little to no heat produced (glow sticks )

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20
Q

Source of Light: Bioluminescence

A

When living organisms produce light inside themselves as the result of a chemical reaction with little to no heat produced

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21
Q

Source of light: Triboluminescence

A

The production of light from the friction of certain crystals when theyre being scratched, rubbed together, or broken

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22
Q

Source of light: Light-Emmiting Diodes (Led)

A

Led is light production as a result of an electric current flowing in semi-conducters

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23
Q

What is a visible spectrum?

A

The continuous sequence of colours that make up white lights

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24
Q

What does non luminous mean?

A

Objects that do not produce their own light

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25
Q

What is a semi-conductor

A

A material that allows electric current to flow in only one direction

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26
Q

What is a light ray

A

A line on a diagram representing the direction and a path that light is travelling

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27
Q

geometric optics?

A

The use of light rays to determine how light behaves when it strikes objects

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28
Q

Incident light

A

Light emitted from a source that strikes object

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29
Q

Transparent

A

When a material is clear, it transmits all or almost all incident light rays

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30
Q

Transluscent

A

When a material transmits some incident light but absorbs and reflects the rest. Objects are seen but not clearly seen through the material

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31
Q

Opaque

A

The object does not transmit any incident light, is either absorbed or reflected. Objects behind the mirror cannot be seen at all

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32
Q

image

A

The reproduction of an object through the use of light

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33
Q

Mirror

A

Any polished surface reflecting an image

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34
Q

Plane

A

Flat

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35
Q

Incident Ray

A

The incoming ray of light that strikes a surface

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36
Q

reflected ray

A

The ray that bounces off a reflective surface

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37
Q

Normal

A

The perpendicular 90 degree angle to a mirror surface

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38
Q

Perpendicular

A

“At right angles”

39
Q

Angle of reflection

A

The angle between the reflected ray and the Norma,

40
Q

Specular reflection

A

Reflection of something off a smooth, flat surface

41
Q

Diffuse Reflection

A

Reflection of light off an irregular or dull surface

42
Q

Virtual image

A

And image formed by light coming from an apparent source, light that is not arriving at or coming from the actual image location

43
Q

Concave (converging) mirror

A

A mirror shaped like part of the surface of a sphere in which the inner surface is reflective

44
Q

Convex (diverging) mirror

A

A mirror shaped like that part of the surface of a sphere in which the outer surface is reflective

45
Q

Principle axis

A

The line through the Center of curvature to the midpoint of mirror

46
Q

Vertex

A

The point where the principal axis meets the mirror

47
Q

Real image

A

An image that can be seen on a screen as a result of light days actually arriving at the image locatiom

48
Q

Diverge

A

To spread apart

49
Q

Converge

A

To move to one point, to connect

50
Q

Name all types of waves

A

Radio waves,
Micro waves,
Infrared light waves,
Visible light,
Ultraviolet light waves, X-rays,
Gamma rays waves

51
Q

Name all types of waves from lowest to highest energy levels

A

Radio waves,
Micro waves,
Infrared light waves,
Visible light,
Ultraviolet light waves, X-rays,
Gamma rays waves

52
Q

Name all wave types from highest to lowest frequency

A

Gamma rays,
X-rays,
Ultraviolet light,
Visible light,
Infared light,
Micro waves,
Radio waves

53
Q

What are the two laws of reflection?

A
  • Angle of reflection = angle of incidence
  • Angle of incidence = angle of reflection
  • The incident ray, the reflected ray, and the normal to the surface of the mirror, all lie in the same plane
54
Q

If the angle between the reflected ray and the normal is 47 degrees, what is the angle of incidence?

A

47 degrees

55
Q

If the angle between the incident ray and the normal is 52 degrees what is the angle of reflection?

A

52 degrees

56
Q

If the angle between the incident ray and plane mirror is 14 degrees what is the angle of incidence and reflection?

A

76 degrees

57
Q

If the incident ray comes along the normal what is the angle of reflection and incidence?

58
Q

What is radiation

A

a method of energy transfer that does not require a medium the energy travels at the speed of light

59
Q

What is visible light?

A

Electromagnetic waves that the human eye can see

60
Q

What is the Visible spectrum

A

The continous sequence of colours that make up white light

61
Q

Non luminous

A

An object that doesnet produce its own light

62
Q

Semi-conductor

A

A material that only allows an electric current to flow in one direction

63
Q

Light ray

A

A line on a diagram representing the direction and path that light is travelling

64
Q

Geometric optics

A

The use of light rays to determine how light behaves when it strikes objects

65
Q

Incident light

A

Light emmited from a source that strikes object

66
Q

Transparent

A

A clear objet that allows almost all incident light to pass through it

67
Q

Transluscent

A

An object that transmits some incident light but absorbs and reflects the rest. this is semi-see through

68
Q

opaque

A

this object only absorbs and reflects light, you cannot see anything behind the material

69
Q

Image

A

reproduction of an object through the use of light

70
Q

Mirror

A

any polished surface reflecting an image

71
Q

Reflection

A

the bouncing back of light from a surface

72
Q

Plane

73
Q

Incident ray

A

an incoming lightray that strikes a surface

74
Q

Reflected ray

A

a ray that bounces off a reflective surface

75
Q

Normal

A

The perpendicular 90 degree angle to a mirror surface

76
Q

Perpendicular

A

At right angles

77
Q

Specular refelction

A

The reflection of light off a smooth, flat, shiny surface

78
Q

Diffuse reflection

A

the reflection of light off a irregular or dull surface

79
Q

Virtual image

A

an image formed by a light coming from an apperent light source; light that is not arriving or coming from the actual image location

images that are formed in locations where light does not actually reach.

80
Q

Concave (converging) mirror

A

A mirror shaped like the part of the surface of the sphere in which the inner surface is reflective

81
Q

Convex (diverging) mirror

A

A mirror shaped like the part of the surface of the sphere in which the outer surface is reflective

82
Q

Centre of curvature

A

the centre of the sphere whose surface has been used to make the mirror

83
Q

Principal axis

A

the line through the Center of curvature to the midpoint of the mirror

84
Q

Vertex

A

The point where the principal axis meets the mirror

85
Q

Real image

A

an image that can be seen on a screen as a result of light rays actually arriving at an image location

86
Q

Diverge

A

to spread apart

87
Q

Converge

A

lines that tend to merge together and meet at a point

88
Q

Name the wave types in order from lowest to highest energy

A
  • radio waves
  • microwaves
  • Infared light
  • visible light
  • ultraviolet light
  • X-rays
  • gamma rays
89
Q

Name the wave types in order from lowest to highest frequency

A
  • radio waves
  • microwaves
  • Infared light
  • visible light
  • ultraviolet light
  • X-Rays
  • Gamma Rays
90
Q

What is the highest part of the wave called

91
Q

What is the lowest part of the wave called?

92
Q

What is amplitude

A

The height of the wave

93
Q

ROYGBIV

A

Red, orange, yellow, green, blue, indigo, violet

Grade 10 Science (18 decks)

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