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C2 > C1 > Flashcards

C1 Flashcards

1
Q

what are waves created by?

A

oscillations

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2
Q

names two types of waves

A

transverse & longitudinal

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3
Q

3 types of transverse waves

A

ripple on water
electromagnetic
guitar strings
seismic s waves

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4
Q

what are transverse waves

A

oscillations of the medium are perpendicular to the direction of energy propagation

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5
Q

what are longitudinal waves

A

oscillations are parallel to the direction of energy propagation

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6
Q

name 2 types of longitudinal waves

A

sound & seismic p waves

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7
Q

what is compression

A

high pressure due to particles being close together

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8
Q

what is rarefaction

A

low pressure due to particle being far apart

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9
Q

displacement

A

distance from the equilibrium in a given direction

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10
Q

amplitude

A

maximum displacement

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11
Q

peak

A

top of wave (positive)

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12
Q

trough

A

bottom of wave (negative)

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13
Q

wavelength

A

distance along the wave for one full cycle

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14
Q

frequency

A

waves passing per second

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15
Q

period

A

time taken for one complete oscillation

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16
Q

wave speed

A

the speed at which waves transfer energy

17
Q

in phase

A

same displacement and are moving in the same direction at the same time

18
Q

how are stationary waves formed

A

reflective wave and incoming wave are travelling in opp direction and meettin the same medium
amplitudes add together to produce a single wave with a larger displacement

19
Q

constructive interference displacement

A

amplitude doubles

20
Q

destructive interference

A

0

21
Q

what is a node

A

amplitude is minimum (destructive)

22
Q

what is an antinode

A

amplitude is maximum (destructive)

23
Q

what waves do stringed instruments create?

A

transverse

24
Q

what waves are heard when stringed instruments are played

A

longitudinal

25
Q

harmonicsn

A

natural frequencies of a muscial instrument

26
Q

what happens when you increase the harmonics

A

adds 1/2 wavelengths and increases the frequency

27
Q

wave sin resonators

A

wave motion is confined in a fixed space

28
Q

how do resonators workab

A

absorb travelling wave energy from outside
small amounts of energy collected over time can be stored in a stationary wave
and build up a larger amplitude oscillation

29
Q

hwo can the pressur ebe changed in a wind instrumetn

A

play diff notes
which creates stationary waves with diff frequencies

30
Q

in an open pipe instrument what does the stationary wave have at each end

A

2 anti nodes

31
Q

what waves do open pipe instruments produce

A

longitudinal

32
Q

what waves do wind instruments produce

A

longitudinal

33
Q

what do close piped instruments produces

A

transverse

C2 (2 decks)

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