Science is defined as a systematic attempt to establish knowledge through objective means. It employs skills like measuring, analyzing, observing, and experimenting. Science can be classified into pure science, applied science, and technology. Pure science involves experimentation for the pursuit of knowledge, while applied science searches for practical uses of scientific knowledge. Technology applies science to improve life. The three main branches of science are life science, physical science, and earth/space science. Life science studies living things, physical science deals with matter and energy, and earth science examines our planet and surroundings.

1. WHAT IS SCIENCE
Ms. Donita D. Germono

2. What is Science?
■ Comes from the Latin word scientia, which means “to know”.
■ A systematic attempt to establish knowledge that helps explain natural and physical
occurrences through objective means.
■ Employs skills such as measuring, analyzing, observing and experimenting.

3. Science
Pure Science
Life Science
Physical Science
Earth Science
Applied Science Technology

4. Classified as follows:
■ Pure Science – involves gathering of information through
experimentation, which is done mainly for the pursuit of
knowledge
■ Applied Science – deals with the search for practical uses
scientific knowledge and scientific laws.
■ Technology – comes from the Greek word techne that means
“art, craft or skill” and logia that means “word or expression”
– Application of science that improves the quality of human
life.

5. Integrated Science includes 3 branches
of Pure Life Science:

6. 3 Main Branches of Science
Life Physical Earth/Space

7. Life Science
■ Known as biology; studies all aspects of living things.
■ Studies the behavior, history and development of living organisms.
■ Jean-Baptiste Lamarck introduced the term biology in the 1800’s
Subdivisions of life science:
• Botany
• Zoology
• Genetics
 Life sciences may be subdivided according to units of study: molecule, cell, organism or
even population and the following divisions of life sciences developed through the years:
 Biomedicine
 Cellular biology
 Developmental biology
 Ecology
 Embryology
 Histology
 Molecular biology
 Physiology

8. Physical Science
■ Deals with matter and energy.
Subdivisions:
 Physics – study of the interaction between matter and energy
 Chemistry – study of the composition of matter and the changes it undergoes.
 Astronomy – the study of heavenly bodies.

9. Earth Science
■ Also known as geoscience, or the study of the Earth and its neighbors.
■ Is further divided into specific fields of study:
– Geology
– Paleontology
– Oceanography
– Meteorology
– Petrology