Introduction to Physics

Everything from the beginning of the school year to September 28

Physics

The science aimed describing the fundemantel aspects of the universe

Physics Describes

The basic mechanisms that make the universe behave the way it does

ex. Gravity, energy, movement

Science in Latin

Having Knowledge

Explanations must…

be testable

Technology

Application of scientific knowledge for practical purposes and the tools machines and the process used to create them

Ancient People Studied…

things they could see, that moved or still

Kinematics

Study of moving objects ex. sun, moon, stars

Statics and Dynamics

Study of how still objects start moving, stop moving, and change speed

The Study of kinematics, statics, and dynamics lead to the invention of…

some simple machines

List Simple Machines

• levers

• pulley

• wheel and axel

• ramps

• wedge

• screw

The combination of simple machines led to…

complex machines

ex pulleys → elevators

Acoustics

study of sound

optics

study of light

Developed by (…) and (…), the invention of (…) led to studying the solar system which in turn led to…

Galilio, Newton, Telescope, the laws of motion

Thermodynamics (def, who, led to)

study of thermal energy and transfer of heat

developed by James Joule

led to engines and refrigerators

Electromagnetic (def, who, led to)

study of electricity and magnetism

developed by Oersted and Faraday

development of electric generators and electric lights

Nuclear Physics (def, who, covers)

study of nuclei of atoms

Developed by Maria and Pierce Curie

Covers quantum mechanics

Quantum Mechanics

The behavior of molecules, atoms, and subatomic particles

Physics can be categorized into…

Classical Physics and Modern physics

Classical Physics

Developed from the renaissance to end of the 19th century and includes descriptions of the universe with approximations under 3 conditions

Classical Physics Approximation Conditions

1. Matter must be moving at speeds less than 1% speed of light

2. The objects dealt with must be large enough to be seen with the naked eye

3. Only weak gravity such as Earths gravity can be involved

Is Classical Physics necessary to understand modern Physics?

yes

Does Classical Physics still give accurate descriptions of everyday experiences?

yes

What are the two revolutionary theories that are included in physics?

The Theory of Relativity and Quantum Mechanical Theory

(both deal with the very fast and very small)

The Theory of Relativity

Developed by Einstein in 1905, it deals with how two observers moving relative to each other would experience the same phenomena

Time passes more slowly for… (relativity)

an object traveling at high speed than an object at rest

Time Delation

time passes more slowly on the surface of Earth than it does on satelights

Quantum Mechanics

deals with very small mainly subatomic particles that make up atoms

Physics + Chemicals and Biological Processes

X rays, MRIs and other imaging

Physics + Transportation

Cars, planes, rockets, satellites

Scientific Method

systematic way of solving any problem

Scientific Method Steps

Observation- gather info by using senses

Hypothesis- propose an explanation

experiment- perform a procedure that is used to solve hypothesis