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optics science test > science optics test > Flashcards

science optics test Flashcards

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1
Q

what is medium

A

any physical substance which energy can be transferred

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2
Q

wavelengths

A
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3
Q

electromagnetic wave

A

a wave that has both electric and magnetic parts

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4
Q

electromagnetic spectrum

A

The complete range of all types of radiation that has both electric and magnetic fields and travels in waves

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5
Q

visible light

A

the visible region of the electromagnetic spectrum

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6
Q

visible spectrum

A

The continuous sequence of colours that make up white light

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7
Q

incandescence

A

emitting light as a result of being heated

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8
Q

electric discharge

A

The process of producing light by passing an electric current through a gas

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9
Q

phosphorescence

A

The process of producing light by the absorption of UV light resulting in the emission of visible light over an extended period of time

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10
Q

fluorescence

A

The immediate emission of visible light as a result of the absorption of UV light

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11
Q

luminescence

A

the emission of light by a substance as a result of a chemical reaction

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12
Q

chemiluminscence

A

The direct production of light as the result of a chemical reaction

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13
Q

bioluminescence

A

The production of light in living organisms as a result of a chemical reaction (chemiluminescence in living organisms)

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14
Q

light ray

A

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

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15
Q

incident light

A

light emitted from a sources that strikes an object

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16
Q

transparent

A

when a material transmits all or almost all incident light; objects can be clearly seen through the material

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17
Q

translucent

A

when a material transmits some incident light but absorbs or reflects the rest; objects are not seen clearly through the material

18
Q

opaque

A

when a material does not transmit any incident light; all incident light is either absorbed or reflected; objects behind the material cannot be seen at all

19
Q

image

A

reproduction of an original object through the use of light

20
Q

mirror

A

any polished surface reflecting an image

21
Q

reflection

A

the bouncing back of light from a surface

22
Q

plane

A

flat

23
Q

incident ray

A

the incoming ray that strikes a surface

24
Q

reflected ray

A

the ray that bounces off a reflective surface

25
Q

normal

A

the perpendicular line to a mirror surface

26
Q

perpendicular and parallel

A

perpendicular: at right angles
parallel: lines that never meet

27
Q

angle of incidence

A

the angle between the incident ray
and the normal

28
Q

angle of reflection

A

the angle between the reflected ray and the normal

29
Q

virtual image

A

an image formed by light coming from an apparent light source

30
Q

lateral inversion

A

the orientation of an image in a plane mirror that is backwards and in reverse order

31
Q

real image

A

the collection of focus points actually made by converging/diverging rays

32
Q

plane mirrors

A

a mirror with a flat reflective surface

33
Q

concave mirrors

A

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

34
Q

convex mirrors

A

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

35
Q

centre of curvature (c)

A

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

36
Q

principal axis

A

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

37
Q

vertex (V)

A

the point where the principal axis meets the mirror

38
Q

focus (F)

A

the point at which light rays parallel to the principal axis converge when they are reflected off a concave mirror

39
Q

angle of refraction

A

the angle between the refracted ray and the normal

40
Q

refracted ray

A
41
Q

coverage and diverge

A
42
Q

2 laws of reflection

A

1) The angle of incidence equals the angle of reflection
2) The incident ray, the reflected ray, and the normal all lie in the same plane

optics science test (1 decks)

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