welcome 5s2 to physics class 2014

8/12/2019 Welcome 5S2 to Physics Class 2014

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rules & regulation

5 mins from class or hall

wait outside for teacher

do not enter lab without teacher's permission

stand up straight

quite

when all in place, wish your teacher
http://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/pelan%20kedudukan%202014.xlshttp://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/pelan%20kedudukan%202014.xls


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read the prayersit down when allowed only

text book/revision bookfile & testpads

1 long note book (Physics Book 1)


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evaluation

30 % - teacher

10 (dicipline)

10 (pop quiz)

10 (presentation or folio)

70 % - pupils

PEKA

be prepared for the experiments & questions

from teacherco-operation

cleanliness
http://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/PBS%20fizik%202014.xlshttp://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/PBS%20fizik%202014.xlshttp://c/Users/user/Documents/panitia%20fizik%20smksi/SIJIL%20PEKA%20FIZIK.dochttp://c/Users/user/Documents/panitia%20fizik%20smksi/SIJIL%20PEKA%20FIZIK.dochttp://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/PBS%20fizik%202014.xlshttp://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/PBS%20fizik%202014.xlshttp://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/PBS%20fizik%202014.xlshttp://c/Users/user/Documents/pengurusan%20kelas%20&%20makmal/PBS%20fizik%202014.xls


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remember

raise up your hand for permission to talk raise up your hand for permision to walk

For class management do it at hall

staff room

after class


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1.1 Understanding waves

Paste or copy the mind map

Lets check out this video
http://c/Users/user/Videos/Energy%20in%20Waves-%20A%20Transfer%20Story%20(Spaced%20Out-%20A%20Cosmic%20Scene).MP4http://c/Users/user/Videos/Energy%20in%20Waves-%20A%20Transfer%20Story%20(Spaced%20Out-%20A%20Cosmic%20Scene).MP4http://c/Users/user/Videos/Energy%20in%20Waves-%20A%20Transfer%20Story%20(Spaced%20Out-%20A%20Cosmic%20Scene).MP4http://c/Users/user/Videos/Energy%20in%20Waves-%20A%20Transfer%20Story%20(Spaced%20Out-%20A%20Cosmic%20Scene).MP4http://c/Users/user/Videos/Energy%20in%20Waves-%20A%20Transfer%20Story%20(Spaced%20Out-%20A%20Cosmic%20Scene).MP4


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What is waves?

WAVE


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Describing waves

Paste the handouts pg. 4 & 5 Nota Padat Fizik Waves


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In conclusion, today we have learn about

amplitude wavelength

period

frequency speed


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Homework

1. Do a mind mapon describing wave:-

amplitude period

frequency

wavelength

speed

3. Be prepared for POP QUIZ


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when going out...

stand at place & straight quite

put the chair under the table

wish thank you walk out in line

THANK YOU


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be reminded of the rules & regulation


wait outside for teacher

do not enter lab without teacher's permission

stand up straight

quite

when all in place, wish your teacher. Plan 2


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read the prayersit down when allowed only

text book/revision bookfile & testpads

1 long note book (Physics Book 1)

see yesterday index, teacher's mind map,circle, nota padat fizik handouts, mind mapon describing waves


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POP QUIZ 1

please paste in your notebook
http://c/Users/user/Documents/physics%20classroom%202014/Pop%20Quiz%201.dochttp://c/Users/user/Documents/physics%20classroom%202014/Pop%20Quiz%201.doc


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Questions

Please paste in notebook & try to do


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In conclusion..

You've learn about describing waves inwords and verbally

solve problems involving waves


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when going out...

stand at place & straight quite

put the chair under the table

wish thank you walk out in line

THANK YOU


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be reminded of the rules & regulation


wait outside for teacherdo not enter lab without teacher's permission

stand up straightquite

when all in place, wish your teacher. Plan 3


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from our previous class...

see the question on frequency, period &

speedno. 7

Pupils who need to see me after class,

please stay back

imannazmi

jaya
http://c/Users/user/Documents/physics%20classroom%202014/Questions%20on%20frequency%20and%20period%20form%205%20waves.dochttp://c/Users/user/Documents/physics%20classroom%202014/Questions%20on%20frequency%20and%20period%20form%205%20waves.dochttp://c/Users/user/Documents/physics%20classroom%202014/Questions%20on%20frequency%20and%20period%20form%205%20waves.dochttp://c/Users/user/Documents/physics%20classroom%202014/Questions%20on%20frequency%20and%20period%20form%205%20waves.doc


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now, let's interpret graph

see & copy the transparency 5 (syabas)


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copy this question from syabas

handouts


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Exercise from modul P&P fizik

paste in your notebook

see question no. 3

no. 4

no. 5

no. 1

no. 2


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PEKA

Oscillating system

Diagram 1 & Diagram 2 shows a diver with

mass 90 kg and 50 kg respectively

standing at the end of a diving board. Both

divers vibrate the spring boards before

diving into the water. the diving board in

Diagram 2 vibrates faster than in Diagram1.


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Inference


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hypothesis


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Aim


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Variables

MV:

RV:

CV:


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Apparatus & Materials

retord stand, metre rule, spring, slotted

mass, stopwatch


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Procedure

Set up the apparatus and materials like indiagram.

Pull the slotted mass of 150 g

downward 10 cm. Release the slotted mass and count the

time for 10 oscillation using a

stopwatch Repeat the experiment with different

mass of 200 g, 250 g, 300 g, and 350 g.


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Results

mass/g

150

200

250

300

350


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Conclusion (only in the report)

from the graph, the T __________ to

mass. From the hypothesis, when

_________ increased, ________

increased. Hypothesis accepted.


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Precaution (only in the report)

make sure the slotted mass is pulled atconstant length of 10 cm only

releasing the slotted mass and pressing the

stopwatch to count 10 oscillationshould bedone by the same person to avoid randomerror

dont overload the spring or pull the springuntill exceed the elastic limit of spring toprevent spring damage


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Tommorow, before coming to class the

report for this PEKA is ready

paste this handout of PEKA

in your notebook


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when going out...

stand at place & straight

quite

put the chair under the table wish thank you

nazmi, iman n jaya stay

walk out in line

THANK YOU


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rules & regulation (15/1/14)

stand up straight in place (plan 5)

quiet

wish your teacher

doa

thank you for passing up PEKA

remember to write title of graph,

table must use ruler to draw, if not there isno table

open notebook


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previous work

graph

homework, exercises page 7

let's discuss the answer

PEKA please paste in book

today, index, Damping & Resonance

(15/1/14)(Wednesday)

Pass out handouts page 6 - 7 from notapadat fizik


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let's oscillate a spring system

observe what happen after we displacethe spring downwards

the spring will start to oscillate

after some time it will eventually stop if we want it to continue to oscillate we

have to force oscillation

so if we draw a graph of its displacement vs


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so if we draw a graph of its displacement vs

time


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what is damping?

dampingdamping


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resonance

resonance


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Lab Zone

aim : to demonstrate resonance by using a

measuring cylinder filled with water procedure :

a 100 ml measuring cylinder is filled with about45 ml of water

a tuning fork i struck and held near the open endof measuring cylinder. the sound produce fromthe inside of measuring cylinder is notedcarefullyat close distance

this procedure is repeated using other tuningforks. the loudness of the sounds producedbydifferent tuning forks are compared

b ti


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observation

a very loud sound is produced by forcedoscillation of the air column inside the

measuring cylinder when one vibrating

tuning forks is used.

inference : an air column which is

subjected to forced oscillation at its natural

frquency will vibrate with maximum

amplitude to produce a loud soundwhereby resonance occurs

Ph i l b R


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Physics lab Resonance

Barton's Pendulum


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Resonance in slow motion

t d h l t b t
http://c/Users/user/Downloads/Video/Wine%20glass%20resonance%20in%20slow%20motion.MP4http://c/Users/user/Downloads/Video/Wine%20glass%20resonance%20in%20slow%20motion.MP4


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today, we have learnt about

damping

system undergo decrease in oscillation

resonance

a system oscillate at its maximum amplitude

when there is an external force acting on it. this external force must have the same

frequency with the system's natural frequency

The frequency at which an object tends to

vibrate with when hit, struck, plucked, strummedor somehow disturbed is known as the naturalfrequency of the object

t b d f POP QUIZ


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tomorrow, be prepared for POP QUIZ

stand up put chairs under the table

be straight

be quiet

wish thank you

walk out in line


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rules & regulation (22/1/14)

stand up straight (Plan 6) quiet

wish teacher

doa distribute notebook

these people the work is not complete

make sure complete the work beforeleaving the classroom

Nirosh


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check your Pop Quiz on damping &

resonance

so today's lesson, index Type of waves

(22/1/14)(Wednesday)


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Type of waves

1.There are 2 types of wavesa)transverse waves

b)longitudinalwaves

2.Transverse wave - vibration of particles inthe medium is perpendicularto thedirection of propagation of the wave

3. Examples of transverse wavesa) water wavesb)light waves
http://c/Users/user/Downloads/Video/Transverse%20and%20Longitudinal%20Waves%20in%20Physics.MP4http://c/Users/user/Downloads/Video/Transverse%20and%20Longitudinal%20Waves%20in%20Physics.MP4


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4. Longitudinal wave is a wave in which the

vibration of particles in the medium is

parallelto the direction of propagation of

the wave

5. Example of longitudinal waves is sound

wave.


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Wavefronts

see previous handouts on describingwaves
http://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdfhttp://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdfhttp://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdfhttp://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdfhttp://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdf


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Today, we have learnt about

transverse wave

the vibration of particle is perpendicular to

the direction of propagation of waves

longitudinal wave

the vibration of particle is parallel to the

direction of propagation of waves


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Wavefronts

1.A wavefront is a line or plane on which thevibrations of every points on it are inphase and are at the same distance fromthe source of the wave

2.Points in a wave are in phase if theyvibrate in the same direction with the samedisplacement

3. There are two types of wave frontsa) plane wavefrontsb) circular wavefronts


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POP QUIZ

distribute the pop quiz

paste in your book

do it now

discussion of answers


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homework

do the exercises from your file, 1.1

Understanding waves

paste the exercises in your notebook

pass up on saturday (25/1/14)


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when going out

stand up

put chairs under table

quiet & stand straight

wish thank you

walk out in line

welcome


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welcome

thank you for coming to school today

stand up (plan 7)

quiet

wish teacher

doa

open notebook & check your previous work

paste the exercise from your file in yournotebook

today you will pass up the books

index : 25/1/14 reflection of waves


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index : 25/1/14 reflection of waves

distribute the handouts

we study the reflection ofwaves using a ripple tank

teacher refer to nota padatfizik(reflection of waves)

pupils please paste thehandouts and fill inthe blanks withcorrect answer
http://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdfhttp://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdfhttp://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdfhttp://c/Users/user/Documents/nota%20padat%20fizik/1026882-Nota-Padat-Fizik-F5-Waves.pdf


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reflection of waves

let's check out video on ripple tankreflection
http://c/Users/user/Downloads/Video/Ripple%20Tank%20Reflection%20Refraction.MP4http://c/Users/user/Downloads/Video/Ripple%20Tank%20Reflection%20Refraction.MP4http://c/Users/user/Downloads/Video/Ripple%20Tank%20Reflection%20Refraction.MP4http://c/Users/user/Downloads/Video/Ripple%20Tank%20Reflection%20Refraction.MP4


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Reflection of wave occurs when a wavestrikes an obstacle.

The wave undergoes a change indirectionof propagation when it is

reflected. The Laws of Reflection of waves:-

The angle of incidenceis equal to the

angle of reflection The incidentwave, the reflectedwaves

and the normal lie in the same plane


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pattern of reflected waves

see dynamic transparency / phet

you can refer to your tex/reference book
http://c/Users/user/Documents/physics%20classroom%202014/wave-interference_en.jarhttp://c/Users/user/Documents/physics%20classroom%202014/wave-interference_en.jar


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you can refer to your tex/reference book

conclusion


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conclusion

in reflection of waves

wavelength,

speed,

amplitude,

frequency

does not change

direction,

velocity,

changes

when going out


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when going out

take your school holiday homework

pass up your books at the corner end of the

classroom

stand upput chairs under table

quiet

wish teacherwalk out in line

welcome


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welcome

stand up straight (plan 5)

good afternoon

recite doa before lesson

take out exercise book, refer homework GCKL

on understanding waves & refelction of waves

take out red pen or pencil, tick the answers

raise up hand to answer, then sit

hopefully you have done the homework in yourfile, 1.1 - 1.3. Pass up 1.1 next lesson

Diffraction


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Diffraction

1.is a phenomena that refers to the

spreading out of waves when they move

through a gap or round an obstacle

2.characteristics of diffraction of waves:-

does not change

a) wavelength

b) frequency

c) speed


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changes

a) amplitude, of diffracted wave is less than that

of the incident waves

b) direction of propagation of diffracted waves

depends on the size of gaps or obstacles. For

smaller gaps and obtacles, the change in directionis larger while the spread is greater


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welcome


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welcome

stand up straight (plan 6)

notebook, index, 9/2/14 interference of

waves


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interference of waves

let's check out this video oninterference of waves
http://c/Users/user/Downloads/Video/Interference%20of%20Waves%20_%20Superposition%20and%20Interference%20in%20light%20and%20water%20waves%20_%20Physics.mp4http://c/Users/user/Downloads/Video/Interference%20of%20Waves%20_%20Superposition%20and%20Interference%20in%20light%20and%20water%20waves%20_%20Physics.mp4http://c/Users/user/Downloads/Video/Interference%20of%20Waves%20_%20Superposition%20and%20Interference%20in%20light%20and%20water%20waves%20_%20Physics.mp4


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let's check out another video on

interference of waves

from that video, we know that interference
http://c/Users/user/Downloads/Video/double%20slit%20coherent%20wave%20interference%20patterns.mp4http://c/Users/user/Downloads/Video/double%20slit%20coherent%20wave%20interference%20patterns.mp4


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o t at deo, e o t at te e e ce

pass out the handouts
http://c/Users/user/Documents/physics%20classroom%202014/interference%20of%20waves.dochttp://c/Users/user/Documents/physics%20classroom%202014/interference%20of%20waves.dochttp://c/Users/user/Documents/physics%20classroom%202014/interference%20of%20waves.doc


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Young's Formula


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g

Modul fizik page 24