1 PCehnagpetneral1a:nInkterpoadduacPtieonnyitaosSactaiennStiafinctIinfivkestigation
Scientific Methodology
Do you realise that our life is based
on science? This includes the food we
eat, the clothes we wear, our modes of
transportation and the energy we use.
Chapter 1 1
Chapter Introduction to
1 Scientific Investigation
What is science?
What are physical quantities?
How do we measure density?
Let’s study: The Use of Measuring Instruments,
Accuracy, Consistency, Sensitivity
Science is Part of Daily Life and Errors
Your Science Laboratory
Physical Quantities and Density
Steps in a Scientific Investigation
Their Units
Scientific Attitudes and Values in
2 Chapter 1 Carrying Out Scientific Investigations
PCehnagpetneral1a:nInkterpoadduacPtieonnyitaosSactaiennStiafinctIinfivkestigation
SCIENCE BULLETIN
ORIGIN OF SCIENCE
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Natural phenomena Variables
Systematic error S.I. units
Systematic observation and Hypothesis
experiments Prefixes
Careers in science In ference
Water displacement Random error
Hazard symbols Values
Chapter 1 3
1.1 Science is Part of Daily Life
Let’s learn
• Relate daily activities to science.
• Generalise the meaning of science.
• Summarise the importance of science in everyday life.
• Describe the fields of science.
• Communicate about careers related to science.
• Relate subjects to be studied in science to careers of interest.
• Describe innovation in technology.
What is Science?
Observe the phenomena around you.
How do thheaspeppenh?enomena
Photograph 1.1 Natural phenomena
In order to understand the factors involved and how natural phenomena occur, we
have to carry out scientific investigations. Science is a discipline that involves systematic
observations and experiments of natural phenomena.
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PCehnagpetneral1a:nInkterpoadduacPtieonnyitaosSactaiennStiafinctIinfivkestigation
Observe our daily activities.
Photograph 1.2 Daily activities
Does science change or affect our daily activities? Give a few other examples of daily
activities that are related to science.
The Importance of Science in Everyday Life
The examples of the importance of science in everyday life are shown in the figure below.
The Importance of Science in Everyday Life
Tall buildings TV satellite
Contributes to the area of engineering such as Invention of satellites has made
construction of tall buildings. communication more effective
Hydroponic method and faster.
Vaccine
Increases crop yields by invention of fertilisers, Discovery of vaccines and antibiotics in
pesticides and hydroponic method. the field of medicine helps in controlling
infectious diseases and reduces death rate.
Figure 1.1 Examples of the importance of science in everyday life
Chapter 1 5
6 Chapter 1 Fields in Science
Science can be divided into various fields. The tree map below shows some examples of important fields in science.
Fields in Science
Physics Biology Chemistry Geology Astronomy Meteorology
Study of Study of Study of Study of Study of weather and
energy and its living things matter and its rocks, soil and climate change
influence on
Examples: reactions minerals Study of planets, Example:
matter Zoology, stars and other Hydrometeorology
microbiology, Examples: Examples: objects in the
Example: physiology, botany Pharmacology, Geochemistry,
Engineering forensics, toxicology geomorphology universe
and geophysics
Example:
Astrophysics
Figure 1.2 Classification in the fields of science
PCehnagpetneral1a:nInkterpoadduacPtieonnyitaosSactaiennStiafinctIinfivkestigation
Careers in Science
What is your ambition? List the science subjects that you need to study in order to achieve
your ambition.
I want to become I want to become a
an engineer. What doctor. What are the
subjects that I need to
are the subjects
that I need to study?
study?
Figure 1.3 Students’ ambitions
A few examples of careers in science are shown in the tree map below.
Careers in Science
Physics Biology Chemistry Geology
Astronomer Medical doctor Pharmacist Geologist
Oceanographer Botanist Oceanographer Teacher
Zoologist
Teacher Teacher Teacher
Meteorologist Forensic scientist
Oceanographer
Engineer Microbiologist Chemist
Physicist
Biologist
Figure 1.4 Careers in science
Engineer Doctor Pharmacist Geologist
Chapter 1 7
Photograph 1.3 Careers in science
Innovation in Technology
Most machines and inventions
that we use every day are
scientific innovations. For
example, cars, aeroplanes,
telephones and computers. These
machines and instruments help us
solve problems in our life.
Photograph 1.4 Development of technology
1.1 21 ICS
Aim: To give examples of innovations in technology to solve problems in life
Instruction
1. In groups, search for examples of innovations in technology. Information can be
obtained from the Internet, magazines, newspapers or from other sources.
2. Discuss the information that you have collected and present your discussion in class by
using multimedia presentation such as PowerPoint.
3. Discuss how robots can help us in our life. Look at Figure 1.5.
I can help my I can help my
master to clean master to
the house. repair electrical
instruments.
Figure 1.5 Robots can help us in our daily life
Do you know?
The Nobel Prizes in Science are awarded every year
to the outstanding scientists in fields of science every
year in Stockholm, Sweden. You can browse the
following website for further information.
Nobel prize Photograph 1.5 The Nobel Prize
http://www.nobelprize.org
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1.1 Construction of tall buildings
1. Tick (✓) on natural phenomena.
Growth of a baby
Discovery of new medicine The occurrence of day and night
2. Fill in the blanks with the correct answers. and
(a) Investigation of science involves systematic
of natural phenomena.
(b) The recent discovery of vaccines to treat dengue infection is a science
knowledge applied in the field of by microbiologists.
3. List three fields in science and their related careers.
1.2 Your Science Laboratory
Let’s learn
• Identify and state the functions of apparatus.
• Identify symbols and examples of hazardous materials in the laboratory.
• Draw and label apparatus commonly used in the laboratory and classify based on how
it is used.
• Justify the regulations and safety measures in the laboratory.
T he science laboratory is a room equipped to conduct scientific investigations and
experiments. There are many types of materials and apparatus found in the laboratory,
for example, measuring cylinder, retort stand and pipette.
Photograph 1.6 Science laboratory
Chapter 1 9