1.1: What is Science?
> Science: Systematic study of nature and how it affects us and our environment.
> Various fields of science:
*Biology: the study of living things
*Physics: the study of interaction of matter and energy
*Chemistry: the study of composition and chemical properties
of substances, their reactions and uses
*Geology: the study of rocks and minerals
*Astronomy: the study of stars and planets
*Meteorology: the study of weather and climate
1.2: A Science Laboratory
 |
| click for enlargement |
1.3: The Steps in a Scientific Investigation
1.4: Physical Quantities and Their Units
> Prefixes are used when the values of measurement are too large are too small.
1.5: Weight and Mass
1.6: Measuring Tools
*Length
> Distance between two points
> Straight lines can be measured using a metre rule
> Curved lines can be measured using thread and metre rule
> Diameter can be measured using calipers and metre rule.
*Area
> Area of regular shape can be measured using a mathematical formula
> Area of irregular shape can be estimated using graph paper
*Volume
> Volume of liquid can be measured using measuring cylinder, pippete, and
burette
> Volume of irregular solids can be measured using the water displacement
method
1.7: The Importance of Standard Units
> Measurement can be done easily and accurately
> Misunderstanding in communicating can be avoided
