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A Level Revision > Sciece Physics Revision > Flashcards

Sciece Physics Revision Flashcards

1
Q

What is excitation?

A

When the electrons absorb the wavelength of light as energy and they Jump up energy levels

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2
Q

What is deexcitation?

A

When the elections fall back down to their ground energy level and release the excess energy as light

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3
Q

What is wavelength?

A

The distance between two matching points on neighboring waves

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4
Q

What is amplitude

A

Maximum displacement from rest position

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5
Q

What is a progressive wave

A

A moving wave that carried energy from one place to another

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6
Q

What is the calculation to calculate wave speed

A

Frequency times wavelength

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7
Q

What is a transverse wave

A

Oscillations are perpendicular to wave travel

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8
Q

What is a longitudinal wave

A

Oscillations are parallel to the direction of wave travel

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9
Q

What is a stationary wave

A

Two waves traveling in opposite directions usually caused by reflections

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10
Q

Which type of wave out of transverse and longitudinal is plane polarized

A

Tranverse

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11
Q

What is the phase difference from A to B

A

180 degreees

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12
Q

What is the phase difference from A to C

A

270 degrees

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13
Q

What is the phase difference from A to D

A

360 degrees

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14
Q

What is the phase difference from A to E

A

90 degrees

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15
Q

What is the phase difference of dark spots

A

180

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16
Q

What is the phase difference of bright spots

A

0

17
Q

Out of bright spots and dark spots which one has constructive interference

A

Bright spots

18
Q

What is refractive index

A

The ratio of the speed of light in a vacuum compared to the speed of light in a material

19
Q

What is electronegativity

A

The tendency to attract the bonding pair of electrons

20
Q

What is covalent bonding

A

Bonding involving the sharing of outer shell electrons, covalent bonds are very strong

21
Q

Why does simple molecules have a low melting and boiling point

A

Because if weak intermolecular forces

22
Q

Describe bright spots

A

It has constructive interference
It has maximum amplitude and the waves are in phase and it has got a phase difference of 0

23
Q

Describe dark spots

A

It has got minimum amplitude and it has got destructive interference the waves are out of phase and it has got a phase difference of 180 degrees

24
Q

What is the equation to calculate refractive index

A

N= c over v

25
Q

What is displacement

A

Maximum amplitude from equilibrium position

26
Q

What is needed for total internal reflection to happen

A

The angle of incidence has to be bigger than the critical angle and n1 has to be bigger than n2

27
Q

What is the equation to calculate critical angle

A

N = 1 divided by sin(c)

28
Q

What is the equation to calculate intensity

A

I= k over r squared

29
Q

What is interference

A

Waves affected by other waves

30
Q

What is diffraction

A

Waves spread out as they pass through a gap

31
Q

What is refraction

A

Effects due to waves passing a boundary causing a change in the speed of the wave

32
Q

What are the conditions for a stationary wave

A

Traveling in opposite directions
Same frequency
Constant phase difference

33
Q

What does coherent mean

A

Same frequency but different constant phase

34
Q

What are some examples of longitudinal waves

A

Sound
Primary seismic waves

35
Q

What are some example of transverse waves

A

Light waves
Radio waves

36
Q

What is the acronym for inverse square law

A

F- aster
A- away
S- lower
T- owards

A Level Revision (5 decks)

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