MINISTRYgOFgEDUCATIONgSECON
DARYgENGAGEMENTgPROGRAMME
INTEGRATEDgSCIENCE
GRADEg9
Topicsgperglesson
WEEK LESSON
# 1 2 3
1 Pollution Airgpollutants Effectgofgdustgon
plantsgandganimals
2 ThegGreenhouse Thegozoneglayer Damagegtogthegozone
effect layer
3 Mininggactivitiesgand Watergpollutiongand Effectsgofgmininggin
pollution mining Guyana
4 Othergrelationshipsgin Symbiosis Physicalgfactorsgofgan
thegecosystem ecosystem
5 Magnets Magneticgfield Lawsgofgmagnetism
6 Typesgofgmagnets Makinggmagnets Usesgandgstoringgof
magnets
7 Centregofggravity Centreggravitygofg Stability
irregularlygshape
d
objects
8 Typesgofgrocks Thegrockgcycle Propertiesgofgrocks
9 Minerals Usesgofgminerals Preciousgandgsemi
preciousgminerals
10 Clay Usesgofgclay Cement
1
,WEEK LESSON
# 1 2 3
11 Waves Propertiesgofgwaves Wavegequation
12 Behaviourgofgwaves Soundgwaves Musicalginstruments
13 Electricity Circuitgsymbols Typesgofgcircuits
14 Voltagegandgcurrent Investigatinggseries Investigatinggparallel
ingagcircuit circuits circuits
15 Resistance Power Conductorsgan
dginsulatorsgof
electricity
2
, MINISTRYgOFgEDUCATIONgSECON
DARYgENGAGEMENTgPROGRAMME
INTEGRATEDgSCIENCE
GRADEg9
Week: One
Lesson: One
Topic: Pollution
Pollutiongisgthegintroductiongofgharmfulgmaterialsgingthegenvironment.gTh
esegharmfulgmaterialsgaregcalledgpollutants.
Pollutiongcangtakegthegformgofgchemicalgsubstancesgorgenergygsuchgasgnoise,gheatgorglight.
Effectsgofgloudgsoundsgongthegear
THEgHUMANgEAR
3
, Hearingglossgisgagdecreasegingyourgabilitygtogheargorgunderstandgspeechgandgsoundsgaroundgyou.
gHearingglossgcanghappengwhenganygpartgofgthegeargorgthegnervesgthatgcarryginformationgongsou
ndsgtogyourgbraingdognotgworkgingthegusualgway.gIngsomegcases,ghearingglossgcangbegtemporary.
However,gitgcangbecomegpermanentgwhengvitalgpartsgofgthegearghavegbeengdamagedgbeyondgrep
air.gDamagegtoganygpartgofgthegeargcangleadgtoghearinggloss.
Loudgnoisegisgparticularlygharmfulgtogtheginnergearg(cochlea).gAgone-
timegexposuregtogextremegloudgsoundgorglisteninggtogloudgsoundsgforgaglonggtimegcangcauseghea
ringgloss.gLoudgnoisegcangdamagegcellsgandgmembranesgingthegcochlea.gListeninggtogloudgnoiseg
forgaglonggtimegcangoverworkghairgcellsgingthegear,gwhichgcangcausegthesegcellsgtogdie.gTheghear
ingglossgprogressesgasglonggasgthegexposuregcontinues.gHarmfulgeffectsgmightgcontinuegevengaft
ergnoisegexposureghasgstopped.gDamagegtogtheginnergeargorgauditorygneuralgsystemgisggenerallyg
permanent.
However,gifgloudgnoisegdamagedgtoogmanygofgtheghairgcells,gsomegofgthemgwillgdie.gRepeatedge
xposuresgtogloudgnoisesgwillgeventuallygdestroygmanyghairgcells.gThisgcanggraduallygreducegyour
gabilitygtogunderstandgspeechgingnoisygenvironments.gEventually,gifghearingglossgcontinues,gitgca
ngbecomeghardgtogunderstandgspeechgevengingquietergplaces.
NoisegCangAlsogDamagegNervesgingYourgEars
Ingadditiongtogdamagingghairgcells,gnoisegcangalsogdamagegthegauditorygnervegthatgcarriesginform
ationgaboutgsoundsgtogyourgbrain.gEarlygdamagegmaygnotgshowgupgongyourghearinggtest,gbutgcang
creategag‘hiddenghearinggloss’gthatgmaygmakegitgdifficultgforgyougtogunderstandgspeechgingnoisyg
environments.gThegcumulativegeffectgofgnoisegaffectsghowgwellgyougmightghearglaterginglifegandg
howgquicklygyougmightgdevelopghearinggproblems,gevengaftergexposureghasgstopped.
INgCONCLUSION:gLOUDgSOUNDSgOVERgTIMEgCAUSESgDEAFNESSgDUEgTOgDAM
AGEgOFgTHEgCOCHLEAgANDgAUDITORYgNERVE.
4
DARYgENGAGEMENTgPROGRAMME
INTEGRATEDgSCIENCE
GRADEg9
Topicsgperglesson
WEEK LESSON
# 1 2 3
1 Pollution Airgpollutants Effectgofgdustgon
plantsgandganimals
2 ThegGreenhouse Thegozoneglayer Damagegtogthegozone
effect layer
3 Mininggactivitiesgand Watergpollutiongand Effectsgofgmininggin
pollution mining Guyana
4 Othergrelationshipsgin Symbiosis Physicalgfactorsgofgan
thegecosystem ecosystem
5 Magnets Magneticgfield Lawsgofgmagnetism
6 Typesgofgmagnets Makinggmagnets Usesgandgstoringgof
magnets
7 Centregofggravity Centreggravitygofg Stability
irregularlygshape
d
objects
8 Typesgofgrocks Thegrockgcycle Propertiesgofgrocks
9 Minerals Usesgofgminerals Preciousgandgsemi
preciousgminerals
10 Clay Usesgofgclay Cement
1
,WEEK LESSON
# 1 2 3
11 Waves Propertiesgofgwaves Wavegequation
12 Behaviourgofgwaves Soundgwaves Musicalginstruments
13 Electricity Circuitgsymbols Typesgofgcircuits
14 Voltagegandgcurrent Investigatinggseries Investigatinggparallel
ingagcircuit circuits circuits
15 Resistance Power Conductorsgan
dginsulatorsgof
electricity
2
, MINISTRYgOFgEDUCATIONgSECON
DARYgENGAGEMENTgPROGRAMME
INTEGRATEDgSCIENCE
GRADEg9
Week: One
Lesson: One
Topic: Pollution
Pollutiongisgthegintroductiongofgharmfulgmaterialsgingthegenvironment.gTh
esegharmfulgmaterialsgaregcalledgpollutants.
Pollutiongcangtakegthegformgofgchemicalgsubstancesgorgenergygsuchgasgnoise,gheatgorglight.
Effectsgofgloudgsoundsgongthegear
THEgHUMANgEAR
3
, Hearingglossgisgagdecreasegingyourgabilitygtogheargorgunderstandgspeechgandgsoundsgaroundgyou.
gHearingglossgcanghappengwhenganygpartgofgthegeargorgthegnervesgthatgcarryginformationgongsou
ndsgtogyourgbraingdognotgworkgingthegusualgway.gIngsomegcases,ghearingglossgcangbegtemporary.
However,gitgcangbecomegpermanentgwhengvitalgpartsgofgthegearghavegbeengdamagedgbeyondgrep
air.gDamagegtoganygpartgofgthegeargcangleadgtoghearinggloss.
Loudgnoisegisgparticularlygharmfulgtogtheginnergearg(cochlea).gAgone-
timegexposuregtogextremegloudgsoundgorglisteninggtogloudgsoundsgforgaglonggtimegcangcauseghea
ringgloss.gLoudgnoisegcangdamagegcellsgandgmembranesgingthegcochlea.gListeninggtogloudgnoiseg
forgaglonggtimegcangoverworkghairgcellsgingthegear,gwhichgcangcausegthesegcellsgtogdie.gTheghear
ingglossgprogressesgasglonggasgthegexposuregcontinues.gHarmfulgeffectsgmightgcontinuegevengaft
ergnoisegexposureghasgstopped.gDamagegtogtheginnergeargorgauditorygneuralgsystemgisggenerallyg
permanent.
However,gifgloudgnoisegdamagedgtoogmanygofgtheghairgcells,gsomegofgthemgwillgdie.gRepeatedge
xposuresgtogloudgnoisesgwillgeventuallygdestroygmanyghairgcells.gThisgcanggraduallygreducegyour
gabilitygtogunderstandgspeechgingnoisygenvironments.gEventually,gifghearingglossgcontinues,gitgca
ngbecomeghardgtogunderstandgspeechgevengingquietergplaces.
NoisegCangAlsogDamagegNervesgingYourgEars
Ingadditiongtogdamagingghairgcells,gnoisegcangalsogdamagegthegauditorygnervegthatgcarriesginform
ationgaboutgsoundsgtogyourgbrain.gEarlygdamagegmaygnotgshowgupgongyourghearinggtest,gbutgcang
creategag‘hiddenghearinggloss’gthatgmaygmakegitgdifficultgforgyougtogunderstandgspeechgingnoisyg
environments.gThegcumulativegeffectgofgnoisegaffectsghowgwellgyougmightghearglaterginglifegandg
howgquicklygyougmightgdevelopghearinggproblems,gevengaftergexposureghasgstopped.
INgCONCLUSION:gLOUDgSOUNDSgOVERgTIMEgCAUSESgDEAFNESSgDUEgTOgDAM
AGEgOFgTHEgCOCHLEAgANDgAUDITORYgNERVE.
4
