Section b Yalus

8/19/2019 Section b Yalus

1/77

x Teacher’s

http://observing%201.ppt/http://observing%201.ppt/


2/77

x Teacher’s

http://observing%201.ppt/http://observing%201.ppt/


3/77

A B

MEASUREMENT( TIME )MEASUREMENT( TIME )

Length of thread / cmLength of thread / cm Oscillations of pendulumOscillations of pendulum

1515 4040

2020 3535

2525 3030

3030 2525

FIGURE 1 –OSCILLATIONS OF

PENDULUM

State the following

What to change : Length of thread / cm

What to observe : Number of oscillations

What to keep the same : Size/weight of the pendulum

1.


4/77

A group of students gathered information about the temperature of

a room. The table below shows the information obtained by the

pupils.

PupilsPupils Temperature of a roomTemperature of a room / º/ º

1010 3030

1515 3131

2020 3333

2525 3!3!

2.

State the variables:

i. Manipulated variable : Number of the pupils

ii. Responding variable : Temperature in a room

iii. Fixed variable : Size of the room.


5/77

+-

BULB

WIREB!!ER"

Number ofNumber ofbatteriesbatteries

11 22 33

BrightnessBrightnessof the bulbsof the bulbs

DimDim BrightBright BrighterBrighter

State the following:

#anip$late% variables : &$mber of batteries

Respon%ing variables : Brightness of b$lbs

'i(e% variables : Si)e of the b$lb

.


6/77

Amount of water absorbed

SpongeR S T U

!.

Four different size of sponge "ere soa#ed in 1$$ml of the "ater.The amount of "ater absorbed b% the sponge is given in the graph.

State the following:

#anip$late% variables : !he si)e of the sponge

Respon%ing variables : mo$nt of water absorbe%

'i(e% variables : !he t*pe of sponge


7/77

Fish and pipe"ater

Fish and "arm"ater "ith ala%er of oil.

&ottle ' &ottle &

State the follo"ing:

( Manipulated variable : The present of ox%gen

( Responding variable : The )ondition of the fish

( Fixed variable : The size of the bottle

*.


8/77

&la)# plasti)

Plant A Plant B

State the following

! Mani"#late$ %a&ia'le S#nlight

! Re("on$ing %a&ia'le The )on$ition of the "lant

! Fi*e$ %a&ia'le The (i+e of the 'ea,e&-t."e( of "lant

+.


9/77

Na/e of "#"il(Na/e of "#"il( Re(ting "#l(e &ateRe(ting "#l(e &ate0'eat(-/in#te(0'eat(-/in#te( Afte&2e*e&)i(e "#l(eAfte&2e*e&)i(e "#l(e&ate 0'eat(-/in#te&ate 0'eat(-/in#te

Si%aSi%a 3434 5454

P&i.aP&i.a 3434 5656

NanthiniNanthini 3434 3737

Ra/#Ra/# 3434 5757

State the following

! Mani"#late$ %a&ia'le St#$ent(

! Re("on$ing %a&ia'le P#l(e &ate afte& the e*e&)i(e

! Fi*e$ %a&ia'le Re(ting "#l(e &ate

,.


10/77

CageCage PP 88

N#/'e& ofN#/'e& ofg&a((ho""e& afte&g&a((ho""e& afte&

one wee,one wee,55 11

i9 Mani"#late$ %a&ia'le P&a.ing /anti(

ii9 Re("on$ing %a&ia'le N#/'e& of the g&a((ho""e&( ali%e

iii9 Fi*e$ %a&ia'le The (i+e of )age

Sel%i )a&&ie$ o#t an e*"e&i/ent9 She "#t( eight g&a((ho""e&( inea)h )age9 In )age 8: (he "#t( in: a "&a.ing /anti(9 Afte& onewee,: the &e(#lt o'taine$ i( (hown in the ta'le 'elow9

59


11/77

'&

-

/

Sun /arth

Pla)e( on the ea&thPla)e( on the ea&th Te/"e&at#&e 0;) Te/"e&at#&e 0;)

AA


12/77

car

PP 88 RR SS

=eight of=eight ofthethe

(#&fa)e(#&fa)e

1414 6464 4

Ti/e Ti/e 7?7? >4>4 6565 1414

State the following! Mani"#late$ %a&ia'le =eight of the (#&fa)e

! Re("on$ing %a&ia'le Ti/e ta,en

! Fi*e$ %a&ia'le T."e( of the )a&-(#&fa)e

1$.


13/77

x Teacher’s


14/77

FertilizerFertilizer

(gm)(gm)00 11 22 33

Height ofHeight ofplat!("m)plat!("m)

00 1#01#0 1#$1#$ 2#02#0

State the ai/ of the in%e(tigation

To i%e!tigate the relatio!hip&et'ee the amot of

fertilizer a the height of plat!#

1.


15/77

*ee+ *ee+ 11 22 33 ,,

Nm&erNm&erof frog!of frog!

2020 3030 ,0,0 $0$0

Nm&erNm&erofof

!a+e!!a+e!$$ 1010 1$1$ 2020

State the ai/ of the in%e(tigation

To i%e!tigate the relatio!hip &et'ee them&er of

frog! a the m&er of !a+e!

2.


16/77

State the ai/ of the in%e(tigation9

To i%e!tigate the relatio!hip &et'eethe m&er of mar&le! a the le%el of'ater#

3.


17/77

Batter*

B$lb

Switch

Nm&er ofNm&er of&atter-&atter-

.righte!! of &l&.righte!! of &l&

11 /im/im

22 .right.right

33 .righter.righter

State the ai/ of the in%e(tigation9

To i%e!tigate the relatio!hip &et'ee m&er of

&atterie! a the &righte!! of the &l

4.


18/77

The legth ofThe legth of!trig!trig

3"m3"m "m"m "m"m 12"m12"m

The m&er ofThe m&er of!'ig(1mi)!'ig(1mi)

1010 ,,

,cm

cm

.cm

/0cm

The ai/ of thi( e*"e&i/ent

To i%e!tigate the relatio!hip &et'ee thelegth of !trig a the m&er of !'ig#

5.


19/77

x Teacher’s


20/77

AGE AGE

(YEAR)(YEAR)

HEIGHTHEIGHT

(CM)(CM)

11 5050

22 6060

33 7070

44 8080

Ba(e$ on the ta'le what i( the h."othe(i( weBa(e$ on the ta'le what i( the h."othe(i( we)an /a,e)an /a,e

1.1.

A( the age in)&ea(e( the height in)&ea(e( too9A( the age in)&ea(e( the height in)&ea(e( too9


21/77

@hat i( the h."othe(i( fo& thi( e*"e&i/ent@hat i( the h."othe(i( fo& thi( e*"e&i/ent

A

2.2.

The /o#(e nee$ foo$ to li%e9 The /o#(e nee$ foo$ to li%e9

Week 1

A

Week 2


22/77

@&ite the h."othe(i( a))o&$ing to the o'(e&%ation@&ite the h."othe(i( a))o&$ing to the o'(e&%ation

*ee+ 1 *ee+ 3

33

##

*ee+ ,*ee+ 2

A( the $a.( in)&ea(e( the height of the "lant in)&ea(e too9A( the $a.( in)&ea(e( the height of the "lant in)&ea(e too9


23/77

@hat i( the h."othe(i( of the e*"e&i/ent@hat i( the h."othe(i( of the e*"e&i/ent

01 ml /21 ml31 ml

A( the n#/'e& of i&on 'all in)&ea(e( the le%el of

wate& in)&ea(e9

,,

##


24/77

Ba(e$ on the ta'le: what i( the h."othe(i( of Ba(e$ on the ta'le: what i( the h."othe(i( of

the e*"e&i/entthe e*"e&i/ent

No9 ofNo9 ofSwingSwing

Length of St&ingLength of St&ing0)/0)/

Ti/e of Swing Ti/e of Swing0(e)on$0(e)on$

11 4 >4>4

11 7474 ?4?4

A( the length of (t&ing in)&ea(e( the ti/e of(wing in)&ea(e9

$$

##


25/77

@hat i( the h."othe(i( of the e*"e&i/ent@hat i( the h."othe(i( of the e*"e&i/ent

*eight (+g)*eight (+g) 44 77 1414 1717 6464 6767

Thi"+e!! ofThi"+e!! ofMattre!! ("m)Mattre!! ("m)

6666 6464

A( the weight of /att&e(( in)&ea(e( the

thi),ne(( $e)&ea(e(9

##


26/77

011 ml ,/1 ml

stone A

What is the h*pothesis of the e(periment

221 ml

stone

s the n$mber of stone increases the level of

water increase4

##


27/77

Ba(e$ on the ta'le: what i( the h."othe(i( ofBa(e$ on the ta'le: what i( the h."othe(i( of

the e*"e&i/entthe e*"e&i/ent

Time of S'igTime of S'ig(!e"o)(!e"o)

4egth of Strig4egth of Strig("m)("m)

No# ofNo# ofS'igS'ig

164164 4


28/77

@hat i( the h."othe(i( fo& thi(

e*"e&i/ent Ta$"ole( nee$ ai& to '&eathe9

Tapole

Ri%er'ater

5il

##


29/77

x Teacher’s


30/77

AGEAGE(YEAR)(YEAR)

WEIGHTWEIGHT(KG)(KG)

11 99

22 1212

33 1515

44 1818

*hat i! the "o"l!io*hat i! the "o"l!io??

@hen the age in)&ea(e( the weight@hen the age in)&ea(e( the weight

in)&ea(e( too9in)&ea(e( too9

11

##


31/77

@hat )an we )on)l#$e f&o/ the e*"e&i/ent@hat )an we )on)l#$e f&o/ the e*"e&i/ent

A

Ani/al( nee$ foo$ toli%e9

A

Week 2Week 1

22

##


32/77

@hat i( .o#& )on)l#(ion@hat i( .o#& )on)l#(ion

NAMENAME MINUTESMINUTES 6U4SE RATE6U4SE RATE

AMINAMIN 11 3434

A= C=ONGA= C=ONG 11 ?7?7

EEA EEA 11 3737

5$man beings have %ifferent p$lse rate4

33

##


33/77

@hat i( the )on)l#(ion@hat i( the )on)l#(ion

Plant( nee$ wate& to g&ow9Plant( nee$ wate& to g&ow9

*ee+ 1 *ee+ 2

!lant A !lant A!lant !lant

,,

##


34/77

What is your conclusion?What is your conclusion?The thickness of mattress decreasesThe thickness of mattress decreases

when more weight is put onwhen more weight is put on

*eight (+g)*eight (+g) 44 77 1414 1717 6464 6767

Thi"+e!! ofThi"+e!! ofMattre!! ("m)Mattre!! ("m)

6666 6464

$$

##


35/77

@hat i( the )on)l#(ion of the e*"e&i/ent@hat i( the )on)l#(ion of the e*"e&i/ent

The &oot( g&ow towa&$( wate&9 The &oot( g&ow towa&$( wate&9

##

wate&


36/77

What is your conclusion?What is your conclusion?

The le!el of water increase when moreThe le!el of water increase when more

marbles added inmarbles added in

011 ml /21 ml311 ml

##


37/77

@hat i( the )on)l#(ion of the e*"e&i/ent

Plant( '&eath9

##


38/77

Nm&er of telephoeNm&er of telephoem&erm&er

Nm&er of per!oNm&er of per!o

1010 1$1$2020

3030 33

,0,0 00

$0$0 00

@hat i( the )on)l#(ion@hat i( the )on)l#(ion

=#/an ha%e $ie&ent /e/o&.=#/an ha%e $ie&ent /e/o&.

owe&9"owe&9

A g&o#" of (t#$ent will gi%en 74 tele"hone n#/'e& to 'e/e/o&i(e$9 The total tele"hone n#/'e& /e/o&i(e$ '. the(t#$ent i( gi%en in the ta'le 'elow9

##


39/77

x Teacher’s


40/77

@hat )an .o# (ee

A hen A $og

@hat i( the gi&l $oing

The gi&l i( $&in,ing wate&

/4

69


41/77

@hat $o .o# (ee in the "i)t#&e

i( a (/all ho#(e an$ i( a 'ig ho#(e

@hat )an .o# o'(e&%e

The leaf &elea(e ai& '#''le(

6 "

5ot water

,4

24


42/77

0 cm

7 cm

@hat $i$ .o# o'(e&%e f&o/ the "i)t#&e

R#le& A i( (ho&te& than le& B

R#le& B i( longe& than le& A

R#le& A i( 6 )/ an$ &ler . i! $"m

74

B


43/77

8a* / 8a* 7

@hat )an .o# o'(e&%e f&o/ the "i)t#&e

fter 7 %a*s the n$mber of leaves are

increase% to 74

4


44/77

@hat )an .o# o'(e&%e f&o/ the "i)t#&e

The earth i! &igger tha the

mooThe moo i! !maller tha theearth

#oon "arth

94


45/77

@hat )an .o# (ee f&o/ the "i)t#&e

B

Magnet A att&a)t( /o&e "a"e& )li"( than /agnet

BMagnet B att&a)t( le(( "a"e& )li"( than /agnetA

34


46/77

@hat )an .o# (ee when the "a"e& )li" &e"la)e '.

(t&aw

The &l& ot light p#

aper clip

Batter*

B$lb

Switch

The !tra' "aot "o"t ele"tri"it-

.4

/1


47/77

enang ;$ala L$mp$r

B27 min$tes

enang ;$ala L$mp$r 2 ho$rs

B

@hi)h i( the fa(te(t t&an("o&tation

A aeroplae

/14


48/77

x Teacher’s

11


49/77

1.1.

6lat i! gro'ig

7i%e a ifere"e a&ot the gro'th ofthe plat#6lat get! eogh 'ater8plat get! eogh!light8plat get! eogh !pa"e

/a-

Height

The "hart &elo' !ho'! the gro'th of a t-pe of a plat#

22


50/77

O'e)t(

Doe( not light #" the '#l' Light #" the '#l'

G&o#" A!St&ing!Co/'

!Pla(ti) le&

G&o#" B!Nail

!Nee$le!He.

State t'o ifere"e! a&ot the i9ere"e!&et'ee o&:e"t! i grop A a grop .#

1# A i! i!lator8 pla!ti"

2# . i! "o"tor8metal

2.2.

33


51/77

An o'e)t ha( the following )ha&a)te&i(ti)(9

It i( a /e/'e& of the (ola& (.(te/It( )on$#)i%e fo& li%ing thing(9

It ha( at/o("he&e9

@hat $o .o# thin, the o'e)t i(

The Ea&th

3.3.

44


52/77

An a(t&ona#t g&ow( a ("e)ie( of "lant at "lanet

9=e fo#n$ o#t that "lant( )annot g&ow the&e9

Ba(e$ on .o#& ,nowle$ge a'o#t the 'a(i) nee$(

of "lant: w&ite two infe&en)e( a'o#t "lanet 9

No ai&J No wate&JFa& f&o/ (#nlight o&Nea& to the (#nlight9

4.4.

55


53/77

T-pe! of o&:e"tT-pe! of o&:e"tTi!!eTi!!epaperpaper

To'elTo'el SpogeSpoge

;olme of 'ater;olme of 'atera&!or&e8mla&!or&e8ml

1010 2020 ,0,0

*h- the %olme of 'ater a&!or&e &- the %ario!o&:e"t! 'ere i9eret<

Die&ent "&o"e&tie( of the o'e)t(

5.5.

66


54/77

Oil coated leaf

Why the leaf is wilted?

No air

6.6.

77


55/77

A

B

C

5cm

10cm15cm

Length of stringLength of string Number of swings in 30 secondNumber of swings in 30 second

"" 1#1#1#1# $$

1"1" ""

*h- the m&er of !'ig! i9er&et'ee pelm A a =<

The legth of !trig i! i9eret#

7.7.

88


56/77

Out door plant In a dark cupboard

State one inference to explain wh plant B wilted

A B

No sunlight

8.8.

99


57/77

!hich of the followin" factor# cau#e thi# difference#$

%The quantity of sunlight received%The quantity of water received%The sace for growth

9.9.

1010


58/77

Both were watered once in a wee!" After # wee!s$ the cactuswas still alive %ut not the rose lant"

cactu#

10.10.

ro#e plant

State three inference# to explain wh the cactu# plant #ur&i&ed$

1. It'# #ucculent #te(# can #tore water.

2. It'# needle) like lea&e# reduce water lo##.

3. It'# root# are lon" and wide#preadto ab#orb (ore water.

//


59/77

Write two inferences for A base% on table4

/4


60/77

x Teacher’s


61/77

1. What will happen if the plants do not get water?

After 1 week. After 1 week.


62/77

2. What will happen to the plants if there is no sunlight?

After 1 week.After 1 week.


63/77

A g&o#" of (t#$ent( gathe&e$ info&/ation a'o#t thete/"e&at#&e in a &oo/9 The ta'le 'elow (how( theinfo&/ation o'taine$ '. the "#"il(9

6pil!6pil!Temperatre ofTemperatre of

a rooma room - ;C- ;C

1414


64/77

Amin placed a bowl of water in the kitchen# After three da$s

what will happen to the le%el of water&

Answer

a'# (he water has %aporized#

b'# (he water spilt out from the bowl#

c'# )at licked the water

d'# Some bod$ poured out the water

79

MEASUREMENT( TIME )MEASUREMENT( TIME )


65/77

Length of threadLength of thread / cm/ cm Number of OscillationsNumber of Oscillations

1515 4040

2020 3535

2525

3030 2525

A B

FIGURE 1 – OSCILLATIONSOF PENDULUM

( )

re%ict the n$mber of oscillations of the pen%$l$m when the length of a threa% is

07cm4

,1

+.

R,.


66/77

AA4

AA44

AA4

"et )otton beans dr% )otton

beans

oil

3arm"ater

Bea,e&Bea,e& PP 88 RR

Bean(Bean( G&owG&ow Di$ not g&owDi$ not g&ow Di$ not g&owDi$ not g&ow

@hat $o .o# thin, will ha""en to the 'ean( f&o/ 'ea,e& R ifit(

(hifte$ to 'ea,e& P afte& > $a.(

The &ea! 'ill gro'#

4


67/77

Ma&'le(Ma&'le( @eight0g@eight0g Di(tan)e0)/Di(tan)e0)/

AA 77 544544

BB 1414 374374CC 1717 344344

DD 6464 ?74?74

EE


68/77

)otton "la(ti) t&a)ing "a"e&

i9 Mani"#late$ %a&ia'le Mate&ial( #(e$

ii9 Re("on$ing %a&ia'le A/o#nt of the wate& a'(o&'e$ '. the

/ate&ial(

iii9 Fi*e$ %a&ia'le A/o#nt of the wate& #(e$

149

Die&ent t."e( of /ate&ial( ha%e $ie&ent )a"a)it. of a'(o&'ingwate&

(aterials(aterials &mount of water absorbed)ml &mount of water absorbed)ml

%otton%otton *#*#

+lastic+lastic ##

Tracing paperTracing paper 2#2#

144/lwate&

144/lwate&


69/77

x Teacher’s

Nm&er of Nm&er of 11 22 3 ,3 ,

11


70/77

.atterie!.atterie!11 22 3 ,3 ,

TemperatreTemperatreo== 1010 1$1$ 20 2$20 2$

19 @&ite one "#&"o(e of the e*"e&i/ent9

69 I$entif. two %a&ia'le( in thi( e*"e&i/ent 9

a9 '9


71/77

An(we& 19 To in%e(tigate the &elation(hi" 'etween n#/'e&

of 'atte&ie(969 01 N#/'e& of 'atte&ie(

06 Te/"e&at#&e9 A( in)&ea(e the 'atte&ie( the te/"e&at#&e will

in)&ea(e$979 The te/"e&at#&e in)&ea(e if n#/'e& of 'atte&ie( in)&ea(e9

weight of o'e)t( 0gweight of o'e)t( 0g Length of ("&ing 0)/Length of ("&ing 0)/


72/77

weight of o'e)t( 0gweight of o'e)t( 0g Length of ("&ing 0)/Length of ("&ing 0)/

?4?4 1616

114114 1>1>

1?41?4 1?1?614614 1515

19@hat i( the ai/ of thi( in%e(tigation

69 State the following %a&ia'le(0i Mani"#late$ %a&ia'le

0ii Re("on$ing %a&ia'le


73/77

19 To in%e(tigate the &elation(hi" 'etween the /a(( of weight with the length of ("&ing9

69 0a The /a(( of weight 0' The length of the ("&ing


74/77

Theta'le 'elow (how( the info&/ation o'taine$ '. the "#"il(9

6pil!6pil!Temperatre ofTemperatre of

the roomthe room - ;C- ;C

1414 66

1717


75/77

(adpole

+i%er water eakereaker

AAeaker eaker

Mara "o"t a e>perimet# He pt! !ome tapole! i &ea &ea+er .# The he por! oil ito &ea+er .# After 3 hhe get! the re!lt#

19 Na/e 6 %a&ia'le( that )an 'e i$entif. in


76/77

.thi(e*"e&i/ent

i ai& ii )on$ition of ta$"ole9

69 @hat will ha""en to the ta$"ole( The ta$"ole in 'ea,e& A i( (till ali%e while the

ta$"ole in 'ea,e& B $ie(9


77/77

!"N#!"N# $%& $%&

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Section b Yalus

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