INTRODUCTION TO SCIENCE.doc

8/18/2019 INTRODUCTION TO SCIENCE.doc

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Nama: Kelas: Tarikh:

CHAP 1 : INTRODUCTION TO SCIENCE

1. Science is ____________ of things that happen in _________________. We call these events

__________________________.

2. Example:

3. The importance of science in ever!a life

a.

".

c.

!.

#. Science has three "ranches of st$!ies

%. &areers relate! to science:

'. (a"orator Safet )$les

1

S&*EN&E


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+o,s +on,ts

_____________________________________ ________________________________

____________________________________ ________________________________

____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

_____________________________________ ________________________________

-. a/ar!o$s s$"stances fo$n! in la"orator

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Sm"ol Example +escription0*SNS

(45546(E

&))S*7E

*))*T4NT

)4+*4&T*7E

E80(S*7E

9. (a"orator apparat$s

Sm"ol ses6eaker

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0ipette

Test t$"e

&onical ask

5eas$ring clin!er

)etort stan!

ilter f$nnel

6$rette

Scientifc Investigation

1.

2.

3.

4.

.

!.

".

#.

#


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$%iting %e&o%t

+a: +ate:

Title:

4im:

0ro"lem statement :

pothesis :

7aria"les :

a; 5anip$late! varia"les :"; )espon!ing varia"le :c; ixe! varia"le


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Secon!

K

4mpere

Using &%ef0es in -eas+%e-ent

1. We $se pre?xes @hen the >$antities @e meas$re have ______________________ or

____________________________.

2. Sm"ol an! val$es of some pre?xes

P%ef0 S(-o) a)+e o/ &%ef0

k

centiA

1=1BBB

3. Examples:

a; 2BBB m C 2 x 1BBB m

C 2 km

"; B.BB1% m C 1.% x 1=1BBB m

C 1.% mm

c; B.2% m C 2% x 1=1BB m

C 2% cm

!; B.B3 m C ______________________mm

C _____________ mm

e; 1B BBB m C _________________________km

'

1 m C 1BB cm

1cm C 1B mm

1 m C 1BBB mm

1km C 1BBBm

1l C 1BBB

ml

1cm3 = 1 ml


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f; &omplete the ta"le "elo@:

Is ass t'e sa-e as $eig't

$eig't

1. The _______________________ of an o"Dect is t'e &+)) o/ t'e ea%t' on that o"Dect.

2. The p$ll of the earth is calle! _________________________.

3. The S.* $nit of the for the @eight is the ______________________< ;

4. The @eight of an o"Dect is not al@as the ____________. *t changes from place to place

accor!ing to _____________________________ the p$ll of the earth in that place.

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. __________________ "alance is $se to meas$re the @eight of an o"Dect.

ass

1. The mass of an o"Dect is the _______________________________________ in the o"Dect.

2. The mass of an o"Dect _________________________ change. *t is t'e sa-e eve%('e%e.

3. The S.* $nit for mass is ______________________< ;.

4. ___________________________ _________________________________ an! _______________________ is $se to meas$re mass.

. &op an! complete the ta"le "elo@

eas+%ing Too)s

eas+%ing 5engt'

1. The S.* $nit for length is _____________________.

2. (ength is the ________________ "et@een t@o points.

3. Tools for meas$ring length

a. The metre r$ler half meter r$ler or r$ler

i. se to meas$re the length or ____________________ lines.

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ii. When taking rea!ings from the scale of a r$ler the co%%ect e(e &osition is

ver important to o"tain an __________________________.

Parallax error happens if the eyes are wrongly positioned when taking a

reading.

". The meas$ring tape

i. to meas$re the length of __________________________ straight lines.

c. Threa! an! metre r$ler

i. to mes$re the length of a _____________________ line.

F


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Threa! an! r$ler $se to meas$re track 46

!. External an! internal calipers

i. se calipers together @ith a metre r$le to meas$re the _______________ of

ro$n! or __________________ o"Dects.

ii. External calipers is $se to meas$re the __________________________ of an o"Dect

an! internal calipers to meas$re the ________________ !iameter of an o"Dect.

iii. +iameter is a straight line that passes thro$gh the centre of the circle.

eas+%ing t'e e0te%na) ,ia-ete% o/ a ea6e%

1B


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Acitit(: te0t oo6

EASURIN7 AREA

1. We can estimate the _____________ of %eg+)a% o% i%%eg+)a% shapes "tracing the shape onto a piece of g%a&' &a&e%.

2. The area of reg+)a% s'a&e can "e calc$late! $sing -at'e-atica)/o%-+)a. Example: s>$are rectangle

3. The n$m"er of s>$ares covere! " the shape is then co$nte! $sing thefollo@ing metho!:

a. &o$nt the n$m"er of complete s>$ares.

". 4n ___________________ s>$are is co$nte! if half or more of the s>$are iscovere!.

c. Do not co+nt an incomplete s>$are if less than ____________ of s>$areis covere!.

4ctivit : $'at is t'e A%ea o/ 8o+% Pa)-

i. 0lace o$r palm on the printe! graph paper @ith o$r th$m"s an! ?ngers apart assho@n "elo@.

ii. se a pencil to trace the o$tline of o$r palm on printe! graph paper.

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iii. )emove o$r palm. &o$nt the n$m"er of 1 cm s>$ares that are completelor have at least half of their area @ithin the trace. Tick an! recor! the n$m"erof s>$ares co$nte!. in! the approximate s$rface area of o$r palm.

N$m"er of ticks co$nte! C S$rface area of 1 cm s>$are C 1 cm2

Estimate! s$rface are of the palm C N$m"er of ticks co$nte! x 1 cm2

C ____________ x 1 cm2

C ___________ cm2

EASURIN7 O5UE

1. We $se a meas$ring clin!er ___________________ or __________________ tomeas$re the vol$me of a li>$i!.

2. We meas$re the vol$me of a li>$i! in ______________________< ; an! the

vol$me of a soli! in __________________________ < ;.

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3. or most li>$i!s the correct rea!ing sho$l! "e taken from thebottom of the menisc$s @ith the o"server,s ees at the same level.See ?g$re 4.or merc$r the correct rea!ing sho$l! "e taken from the top of

the menisc$s @iththe o"server,s ees at the same level. See ?g$re 6.

4. The vol$me of a reg$lar an! irreg$lar o"Dect can "e meas$re! " $sing

the ________________________________________.

a. The o"Dect is !roppe! into a meas$ring clin!er ?lle! @ith @ater. The@ater level

______________ "eca$se the @ater in the meas$ring clin!er has "eendisplaced " the o"Dect.

". The increase in the vol$me of the @ater in the meas$ring clin!er is ________________ to the vol$me of the o"Dect.

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EASURIN7 TEPERATURE

1. Temperat$re is the !egree of hotness or coldness of an o"Dect.

2. The temperat$re of an o"Dect $s$all meas$re! in !egree &elci$s < oC.;

3. There are t@o tpes of thermometer $se! to meas$re temperat$re.

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#. 5erc$r is $se! "eca$se it ____________________ evenl as the temperat$rerises. *t is a goo! con!$ctor of heat.

%. &orrect ee position

'. 4 clinical thermometer has a ___________________________ to prevent themerc$r from ret$rning to the "$l" after the meas$rement is taken. *t helps!octor to get the rea!ing of "o! temperat$re even after the thermometer isexpose! to room temperat$re.

1'

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INTRODUCTION TO SCIENCE.doc