Physics L1

About Science “ rules of the game” The study of nature’s rules Star patterns Weather patterns A way of thinking A collection of knowledge

“ rules of the game”

The study of nature’s rules

Star patterns

Weather patterns

A way of thinking

A collection of knowledge

The Language of Science

The Scientific Method Recognize problem Make hypothesis Predict consequences Perform experiments Find rule Hypothesis Educated guess Principle / Law Hypotheses tested by experiments and not contradicted

Recognize problem

Make hypothesis

Predict consequences

Perform experiments

Find rule

Hypothesis

Educated guess

Principle / Law

Hypotheses tested by experiments and not contradicted

Aristotle’s hypothesis Regarding the free fall of an object An object twice as heavy falls twice as fast

Regarding the free fall of an object

Galileo’s experiment In the absence of air resistance, all objects fall in the same time Tower of Pisa, Italy

In the absence of air resistance, all objects fall in the same time

Theory Not hypothesis Synthesis of a large body of information Includes many verified hypotheses Undergoes change Atomic theory Cell theory

Not hypothesis

Synthesis of a large body of information

Includes many verified hypotheses

Undergoes change

Atomic theory

Cell theory

Tests of Hypotheses Scientific hypothesis can be proven right and wrong “ The alignment of planets determines the best time for making decisions” “ Intelligent life exists on other planets” “ Most people stop for red lights” “ No material object can travel faster than light”

Scientific hypothesis can be proven right and wrong

“ The alignment of planets determines the best time for making decisions”

“ Intelligent life exists on other planets”

“ Most people stop for red lights”

“ No material object can travel faster than light”

Over to you Which hypothesis is scientific? “ Atoms are the smallest particles of matter”; “ Our universe is surrounded by another universe, which cannot be detected”; “ Albert Einstein was the greatest physicist of the twentieth century”

Which hypothesis is scientific?

“ Atoms are the smallest particles of matter”;

“ Our universe is surrounded by another universe, which cannot be detected”;

“ Albert Einstein was the greatest physicist of the twentieth century”

Science and Technology Science Answers theoretical questions A way of knowing Technology Putting science facts to practical use Interferes with life and nature A way of doing

Science

Answers theoretical questions

A way of knowing

Technology

Putting science facts to practical use

Interferes with life and nature

A way of doing

End L1