6.1 Waves Flashcards

1
Q

For ripples on water what is the thing that is travelling

A

The wave not the water

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2
Q

What to all longitudinal waves require ?

A

A medium

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3
Q

What is amplitude

A

The maximum displacement of a point on a way away from its undisturbed position
On wave it from the middle line to one of the curves - transverse

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4
Q

Wavelength

A

The distance from one point on wave to the equivalent point on adjacent wave
Length of one full curve

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5
Q

Frequency

A

Number of waves passing a point each second

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6
Q

Unit of frequency

A

Hertz

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7
Q

Period

A

The time for one wave to pass point

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8
Q

Wave speed

A

The speed at which the wave moves through the medium

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9
Q

Wave speed

A

Wave speed = frequency x wavelength ( m)

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10
Q

What is light an example of

A

An electromagnetic wave

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11
Q

What are electromagnetic waves

A

Transverse waves they transfer energy from the source of the waves to an absorber

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12
Q

What is good example of electromagnetic waves

A

A microwave oven - transfer energy from the source to food

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13
Q

Solar panels explained

A

Light waves transfer energy from the source the sun to the absorber ( solar panels

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14
Q

What if we pass white light through a prism ?

A

It’s splits into a spectrum

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15
Q

On the red end of the spectrum what do the waves have

A

Lower frequency and longer wavelength

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16
Q

What is the violet end of the spectrum like

A

Higher frequency and shorter wavelength

17
Q

What is the only part of the spectrum that can be detected by the human eye

A

Visible light

18
Q

Order of spectrum

A
Radio 
Microwave 
Infrared 
Visible light 
Ultra violet x rays 
Gamma rays
19
Q

Describe frequency from radio waves to gamma waves

A

Wavelength decreases

Frequency increases

20
Q

When waves travel though medium what happens

A

The particles of the medium oscillate and transfer energy

21
Q

If the wave is absorbed what happens

A

The wave transfers energy to materials energy stores

22
Q

What happens if wave is transmitted through second Material

A

The wave carries on travelling through the new material

23
Q

What happens if a wave is reflected

A

This is where an incoming wave is neither absorbed or transmitted but sent back from second material

24
Q

When wave meets boundary between two materials what happens

A

Absorbed by the second material
Transmitted
Reflected

25
Why is spectrum called continuous
The cut of point between one type of wave and another wave is unclear
26
Do electromagnetic waves need a medium to travel though
No
27
What can electromagnetic waves travel through if medium not needed
Vacuum (space)
28
What is the speed that electromagnetic waves travel at
300000000 | 3x10^8
29
When waves change speed what else can they do
Change direction moving from one medium to another