1
Q
properties of light
A
travels in straight lines
is a form of energy
travels at speed of 3x10^8
when light hits an object it can be reflected or refracted
2
Q
what is reflection
A
light being bounced off after hitting an opaque surface
3
Q
incident ray
A
light coming towards the surface
4
Q
reflected ray
A
light ray bouncing off the surface
5
Q
the normal
A
perpendicular line (90deg) to surface qr point of incidence
6
Q
appearance and explanation of regular reflection
A
e: all reflected light rays are parallel after hitting a surface
a: smooth
7
Q
explanation and appearance of diffused (irregular) reflection
A
e: all reflected light rays are not parallel to one another, they reflect in different directions
a: rough
8
Q
applications of reflection
A
dentist mirror
side mirror of car
9
Q
laws of reflection
A
- angle of incidence (i) = angle of reflection (r)
- in a reflection diagram, incident ray, reflected ray and normal must lie in the same plane
physics
flashcards
Decks in class (37)
# Cards
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prefixes55
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1.3 how do we measure physical quanities + 1.4 what are scalars and vectors42
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2.1 what are speed, velocity and acceleration16
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2.2 how do we analyse motion graphically + 2.3 what is acceleration of freefall5
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3.1 what are the types of forces13
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3.2 is mass same as weight11
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4 dymanics II: forces31
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chapter 5 turning effects of forces21
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chapter 6 pressure23
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7.1 what are energy stores and transfers22
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7.2 what are work done and power11
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7.3 how can we obtain energy24
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8.1 how does the kinetic particle model relate to the states of matter11
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8.2 how does the kinetic particle model relate to temperature and pressure9
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9.1 what is thermal equilibrium5
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9.2 how is energy trsnsferred by heating22
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9.3 what are some applications of thermal processes15
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10.1 how is internal energy related to heat capacity11
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10.2 what are the processes that involve a change of state9
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10.2 hoe does cooling by evaporation occur5
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10.2 differnecebetwen boiling and evaporation5
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10.2 facotrs affecring rate of evaporation7
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11.1 how can we describe wave motion22
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14 light9
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12.1 sound12
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12.2 sound9
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12.3 sound4
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13.1 what are electromagnetic waves14
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13.w uses and dangers of electromagnetic waves8
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15.1 what are electic charges and fields16
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15.2 how are object’s electrostatically charged15
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13.2uses of electromagnetic waves40
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13.2 dangers of electromagnetic waves10
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15.3 example of electrostatic charging25
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16.1 How Do We Describe the Energy Transfer by an Electric Current in an Electric Circuit?47
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16.2 Why Does Electrical Resistance of Metals Increase with Temperature?37
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defnitions77
