wave properties

Wave properties

Book page 91 ndash 93

Syllabus 31 ndash 34 copycgrahamphysicscom 2016

Starter Challenge There are 5 main oceans in the world

Can you name and locate them

Extension What do all oceans and seas have Hint

Pacific Ocean

Atlantic

Ocean Arctic Ocean

Indian Ocean

Southern Ocean

copycgrahamphysicscom 2016

Can you name the waterbodies that are not an ocean

Lake Victoria Lake Erie Dead Sea Mediterranean Sea

Dead Sea Lake Erie

Mediterranean Sea Lake Victoria


Can you match the wave pattern

Seismic wave Human voice

Music beat

Heart beat copycgrahamphysicscom 2016

What are waves and what do they do

bull Describe how waves

move

bull Explain the basic

properties of waves

bull Compare transverse

and longitudinal waves

Displacement (배의) 배수량

Amplitude (a) (파동의)진폭

Frequency 빈도

Wavelength (λ) 물결깊이

Longitudinal 경도(경선)의

Transverse 가로 지르는

횡행

Compression

Rarefaction

Particles

Vibration

Wave front

Aim Key words


Have you ever wondered

The big picture

What does a wave transfer copycgrahamphysicscom 2016

Did you know there are 2

groups of waves with 2

different types of waves

Mechanical waves have

two subgroups

Transverse and

Longitudinal Waves

The two groups are Mechanical waves and electromagnetic waves

(EM)


Constructive- Low energy minimum disturbance to

the reef

EM Waves ndash 7 types

Real Men in violet underwear (are) extremely gorgeous

Radio Micro infra red visible ultra violet x-ray gamma ray copycgrahamphysicscom 2016

Transverse waves ndash


Amplitude

Wavelength λ

Trough

Crest

Node

Copy this diagram into your books


Practical Modelling waves

The wave travels away from the source The direction of the wave is at right angles to the movement of the source In a transverse wave the coils do not travel horizontally each coil of the Slinky just vibrates up and down

LO Understand the similarities and differences between types of waves

source moves up and down

direction of wave

coils vibrate up and down

Direction of energy transfer copycgrahamphysicscom 2016

Definitions bull Amplitude (A) displacement from rest position

bull Wavelength (λ) the distance between a particular point on a wave and the same point on the next wave

bull Frequency (f) the number of waves passing a particular point

per second measured in Hertz (Hz) 119891 =119899119906119898119887119890119903 119900119891 119908119886119907119890119904

119905119894119898119890

bull Period (T) the time taken for the source to produce one wave

bull Time and frequency are related by the equation

bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891


What is the frequency

6

10

1

3

5

05

Wave Cycles Time (s) Freq (Hz)

2

2

2

Waves Frequency


Longitudinal Wave ndash


the reef


Longitudinal Wave

Direction of energy transfer

λ



The wave travels away from the source The direction of the wave is parallel to the movement of the source In a longitudinal wave the coils do not travel horizontally each coil of the Slinky just vibrates left and right


source moves left and right

coils vibrate left and right

direction of wave copycgrahamphysicscom 2016

Representation of sound waves

Remember bull Direction of energy transfer is parallel to wave motion bull Particles on wave move back and forth


Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember

bull Direction of energy transfer in a longitudinal wave is parallel to wave motion

bull Particles on wave move back and forth

bull A pressure wave can be transformed to be displayed as a transverse wave using an electrical signal in an oscilloscope copycgrahamphysicscom 2016

Oscilloscope

Longitudinal pressure wave in

Electrical signal wave out


Wave front

bull A wave front is an imaginary line or surface that joined all adjacent points which have the same phase of vibration on the wave

bull Any two points on a wave are said to be in phase when they have completed identical fractions of their periodic motion

λ


Whiteboards What is the link between

waves and the wind

Waves are formed when winds blow

across the searsquos surface

Whiteboards So why do you think some

waves are bigger than others

The energy that a wave has depends on

-The frequency f

-The speed v

-The wavelength λ

- The amplitude A


Plenary What have you learnt about waves


Transverse or longitudinal

Transverse Longitudinal

sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet


Which wave below is a longitudinal wave

A Ultraviolet

B Water

C Light

D Sound


What are the units of frequency

A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude

a) The height of a wave above the zero line

b) They transfer energy from one place to another

c) The number of waves per second

d) The distance from peak to peaktrough to trough on a wave

Match the term to the correct definition


a Which two waves have the same amplitude

A C B D E


b Which wave has the highest frequency

A C B D E


c Which wave has the lowest frequency

A C B D E


d Which two waves have the same frequency

A C B D E


e Which wave has twice the amplitude of D

A C B D E


Key words bull Displacement ndash distance from the rest position bull Amplitude (A) ndash maximum displacement from rest position bull Frequency (f) ndash number of waves per second bull Period (T) ndash time it takes for the source to produce one wave bull Wavelength (λ) ndash distance from one crest to the next or similar bull Longitudinal ndash particles vibrate parallel to wave motion bull Transverse ndash particles vibrate perpendicular to wave motion bull Compression ndash areas of high pressure bull Rarefaction ndash areas of low pressure bull Particles ndash a point on a wave bull Vibration ndash a rapid repeated linear motion bull Wave front - an imaginary line that represents the distance between two

crests


Starter Challenge There are 5 main oceans in the world

Can you name and locate them

Extension What do all oceans and seas have Hint

Pacific Ocean

Atlantic

Ocean Arctic Ocean

Indian Ocean

Southern Ocean




Dead Sea Lake Erie





Music beat




move


properties of waves





Frequency 빈도




횡행

Compression

Rarefaction

Particles

Vibration

Wave front

Aim Key words



The big picture






two subgroups

Transverse and

Longitudinal Waves


(EM)



the reef






Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests




Dead Sea Lake Erie





Music beat




move


properties of waves





Frequency 빈도




횡행

Compression

Rarefaction

Particles

Vibration

Wave front

Aim Key words



The big picture






two subgroups

Transverse and

Longitudinal Waves


(EM)



the reef






Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests




Music beat




move


properties of waves





Frequency 빈도




횡행

Compression

Rarefaction

Particles

Vibration

Wave front

Aim Key words



The big picture






two subgroups

Transverse and

Longitudinal Waves


(EM)



the reef






Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests




move


properties of waves





Frequency 빈도




횡행

Compression

Rarefaction

Particles

Vibration

Wave front

Aim Key words



The big picture






two subgroups

Transverse and

Longitudinal Waves


(EM)



the reef






Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



The big picture






two subgroups

Transverse and

Longitudinal Waves


(EM)



the reef






Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests






two subgroups

Transverse and

Longitudinal Waves


(EM)



the reef






Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



the reef






Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests




Amplitude

Wavelength λ

Trough

Crest

Node







direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests






direction of wave







119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests






119905119894119898119890



bull 119891119903119890119902119906119890119899119888119910 119891 119894119899 119867119890119903119905119911 =1

119905119894119898119890 119901119890119903119894119900119889 119879(119894119899 119904119890119888119900119899119889119904)

bull 119891 =1

119879 or 119879 =

1

119891



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



6

10

1

3

5

05


2

2

2

Waves Frequency




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests




the reef


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests


Longitudinal Wave


λ











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests











Comparison

bull longitudinal

bull Sound Waves

bull transverse

Remember




Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests


Oscilloscope




Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests


Wave front



λ



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



waves and the wind






-The frequency f

-The speed v

-The wavelength λ

- The amplitude A






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests






sound

p-waves

light

s-waves

water

ultrasound

ultraviolet

sound light

water p-waves

ultrasound

s-waves ultraviolet



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



A Ultraviolet

B Water

C Light

D Sound



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



A Metres

B Hertz metres

C Hertzmetres

D Hertz


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests


Mini-Plenary

1 Waves

2 Wavelength

3 Frequency

4 Amplitude








A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



A C B D E



A C B D E



A C B D E



A C B D E



A C B D E



crests



A C B D E



A C B D E



A C B D E



A C B D E



crests



A C B D E



A C B D E



A C B D E



crests



A C B D E



A C B D E



crests



A C B D E



crests



crests


wave properties

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