1. Welcome to Physics--Jump in!

2. Chapter 1
Section 1 What Is Physics?
Objectives
Identify activities and fields that involve the major areas within physics.
Describe the processes of the scientific method.
Describe the role of models and diagrams in physics.

3. What is Physics If it is living it is biology.
If it is chemicals it is chemistry
If it is rocks it is geology
Physics is everything else and can be applied to biology, chemistry and geology, so…..
Physics is the study of just about everything!

4. Physics is the study of the interactions between matter and energy.
Okay, you want a proper definition:
Physics is the study of the interactions between matter and energy.
Physics

5. Topics Covered: Mechanics Electricity Magnetism Waves Physical Optics
Thermodynamics
Modern Physics
Physics

6. Chapter 1
Section 1 What Is Physics?
Physics
The goal of physics is to use a small number of basic concepts, equations, and assumptions to describe the physical world.
These physics principles can then be used to make predictions about a broad range of phenomena.
Physics discoveries often turn out to have unexpected practical applications, and advances in technology can in turn lead to new physics discoveries.

7. Physics and Technology
Chapter 1
Section 1 What Is Physics?
Physics and Technology

8. The mathematical description of motion 1-D and 2-D motion Dynamics
Mechanics:
The study of motion
Kinematics
The mathematical description of motion
1-D and 2-D motion
Dynamics
The study of the forces that cause motion
Newton’s Laws
Energy
Momentum
Fluids

9. The study of electric charge and the effects they cause.
Electricity
The study of electric charge and the effects they cause.
Electrostatics
Study of the effect of charges collected and held in one place
Electric Current
The study of the effects caused by moving charge

10. The study of the magnetic forces created by moving charge
Magnetism
The study of the magnetic forces created by moving charge

11. Waves
Study of vibrational motion
Simple Harmonic Motion
Sound Waves
Electromagnetic waves

12. Physical Optics The study of: Reflection Refraction Lenses Mirrors

13. Laws of Thermodynamics
Study of
Heat transfer
Temperature change
Ideal Gas Laws
Laws of Thermodynamics

14. Study of the weird stuff Wave Particle Duality Photons The Atom
Modern Physics
Study of the weird stuff
Wave Particle Duality
Photons
The Atom
Nuclear Physics
Radioactive decay

15. The Scientific Method Chapter 1
Section 1 What Is Physics?
The Scientific Method
There is no single procedure that scientists follow in their work. However, there are certain steps common to all good scientific investigations.
These steps are called the scientific method.

16. Models Chapter 1 Physics uses models that describe phenomena.
Section 1 What Is Physics?
Models
Physics uses models that describe phenomena.
A model is a pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept.
A set of particles or interacting components considered to be a distinct physical entity for the purpose of study is called a system.

17. The Scientific Method

18. The Scientific Method Observe an unknown & ask A Question
Form Hypothesis (An educated prediction)
Experiment & Test Hypothesis
Collect Data
Analyze Results
Draw Conclusions & Communicate Results
*Remember the acronyms:
OHEDAC or OHEDACC

19. ** Key: Be a good observer.
observation inference
uses the five
senses
involves a judgment
or assumption

20. Observations are also called data.
Types of Data
Observations are also called data.
qualitative data quantitative data --
descriptions --
measurements
e.g.,
clear liquid
e.g.,
55 L or 83oC

21. Parts of the Scientific Method
Observe & Identify an unknown (Ask a question).
Make a hypothesis:
a testable prediction
Repeatedly experiment to test
hypothesis.
procedure: order of events in
experiment
(i.e., a recipe)
variable:
any factor that could
influence the result

22. A Scientific Experiment
Experiments must be controlled:
they must have at least two set-ups
that differ by only one variable
conclusion: must be based on the data

23. Scientific Law vs. Scientific Theory
states what happens --
does not change --
never violated
-- e.g.,
law of gravity,
laws of conservation
theory:
-- e.g., --
tries to explain why or
how something happens
based on current evidence
Theory of Gravity,
Atomic Theory

24. Recap
What is Physics?
The study of natural phenomena of basic things such as motion, forces, energy, matter, heat, sound, light, and the composition of atoms
2. What branches of science use physics?
All branches!
3. What are the steps in the Scientific Method?
*Remember OHEDAC
Observe an unknown & ask A Question
Form Hypothesis (An educated prediction)
Experiment & Test Hypothesis
Collect Data
Analyze Results
Draw Conclusions & Communicate Results
4. What is the difference between a law vs. theory?
Law: States what happens
Theory: Tries to explain why or how something happens

25. Now what do you think?
What are some topics you expect to study this year in physics?
How do scientists discover the laws of physics?
Do the laws of physics ever change?
The understanding that science is an evolving field of knowledge rather than a static set of facts can help generate student interest in science. Use the example of Galileo’s hypothesis to initiate a discussion on the scientific method. Scientists develop and test hypotheses to discover new theories or laws, or to modify existing theories. Thus, the set of established physical laws and theories changes over time as hypotheses are tested and revised. See if students can suggest examples of theories or laws that have evolved. Examples you may wish to discuss include the development of atomic theory and the relativity of space and time.

26. Find a picture that you think is cool
Find a picture that you think is cool. Bring it in for a group activity tomorrow.
Homework

27. In your group examine your pictures.
Identify the areas of Physics illustrated in your pictures-each picture may have more than one area in it.
Present and discuss with the class the areas of Physics your group has identified in the pictures.