hazard warning symbols

8/4/2019 Hazard Warning Symbols

1/29

Hazard Warning

Symbols


2/29

Flammable

Explosive

Corrosive


3/29

Poisonous

Irritant

Radioactive


4/29

Laboratory

Apparatus


5/29


6/29


7/29

Process Skillin Science


8/29


9/29

Steps in

ScientificInvestigation


10/29

Mengenalpasti masalah

Identifying the problem

Mencadangkan hipotesisSuggesting hypothesis


11/29

Mengenalpasti pembolehubah

Identifying the variables

Menjalankan eksperimenCarrying out an experiment


12/29

Mengumpul data/pemerhatianCollecting data/observations

Menganalisa dan mentafsirkan dataAnalysing and interpreting data


13/29

Menghasilkan kesimpulan

Forming a conclusion

Kesimpulan yang menyokong hipotesis teori sains akandihasilkan Sekiranya kesimpulan tidak menyokong

hipotesis, maka eksperimen terpaksa diulang semula denganmencadangkan hipotesis yang baru

Conclusion supported by the hypothesis, scientific theory

will be formed But, if the conclusion dosentsupports thehypothesis, the scientists need to repeat the experiment

by forming new hypothesis.


14/29

Faktor yang sentiasa kekalsepanjang eksperimenFactors which kept the samethroughout the experiment

Types of Variables

Pemboleh ubah dimalarkanConstant Variables


15/29

Faktor yang sengaja diubahuntuk eksperimenFactors which purposelychanged for the experiment

Pemboleh ubah dimanipulasikanManipulated Variables


16/29

Faktor yang berubah,bergantung kepadapembolehubah menipulasi.Factors that will change,

depending on the manipulatedvariables.

Pemboleh ubah bergerak balasRespondingVariables


17/29

Physical Quantities &

Their units

Kuantiti Fizikal &Unitnya


18/29

Physical quantities are quantities thatcan be measured.

We often measure quantities likelength, mass, time, temperature, andelectric current when carrying out

scientific investigation.


19/29

Kuantiti fizikal bermaksud kuantiti yangboleh diukur.

Kita selalu mengukur kuntiti fizikalseperti panjang,jisim,masa, suhu dan

arus elektrik.


20/29

Physical quantities is measured in SIunits.

SI referred to French term LeSysteme International dUnites.

SI means International System ofUnits.


21/29

Kuantiti fizikal diukur menggunakanunit SI

SI unit merujuk kepada perkatanPerancis iaitu Le Systeme

International dUnites

SI unit bermaksud Sistem UnitInternasional.


22/29

QuantityKuantiti

UnitUnit

Symbol of UnitSimbol untuk unit

LengthPanjang

metre m

MassJisim kilogram kg

TimeMasa

second s

TemperatureSuhu

kelvin K

Electric CurrentArus Elektrik

ampere A


23/29

Using Prefixes in

MeasurementPenggunaan Imbuhan Awal

dalam Pengukuran


24/29

We usually use prefixes when the quantitieswe measure have very big values or verysmall values. The use of prefixes makes

easier for us to write data

Kita biasanya menggunakan prefix apabila nilaikuntiti yang diukur adalahterlalu besaratauterlalu kecil. Penggunaan prefix memudahkan

kita untuk menulis data.


25/29

PrefixPrefix

SymbolSimbol

Value of PrefixNilai Prefix

kilo- k 1000centi- c 1/100milli- m 1/1000


26/29

Mass&

WeightJisim

&Berat


27/29

MASS / JISIM WEIGHT / BERAT

Quantity of mattercontained in an object

Kuantiti jirim yang terdapatdalam sesuatu objek.

DEFINITION

DEFINISI

The Earths gravitational pullon object

Daya tarikan Gravititerhadap sesuatu objek

Kilogram (kg) SI UNIT

UNIT SI

Newton (N)

Lever balance, triple beambalance or electronic balance

Neraca Tuas, Neraca TigaPalang, Neraca Elektronik

TOOL OFMEASUREMENT

ALAT UNTUK

MENGUKUR

Spring balance

Neraca Spring

Mass of an object does notchange

Jisim sesuatu objek tidakberubah

CHARACTERISTICS

CIRI-CIRI

Weight of an object changesfrom place to place

Jisim sesuatu objek berubahdari satu tempat ke satu

tempat lain.


28/29

Measuring Tools


29/29

CONDITION TOOLS

Length of short straight line

Length of long straight line

Length of curved line

External diameter

Internal diameter

Area of regular shape

Area of irregular shape

Measuring volume of liquid

Measuring of irregular object andregular shape

hazard warning symbols

Documents