Transcript 17 Businesses to Start Now!

Mr. Moorman
Who Am I?
Rose-Hulman
Institute
University
of
Indiana
Illinois
General
Motors
Lucent Technologies
of Technology
Electrical
Engineering
Basketball
Delco
Electronics
Sunman
Elementary
Bell Labs Dr.
Jay Engineering
Computer
4th Grade – Mrs. Hayden
What do we use it for?
WHAT IS
ELECTRICITY
???
What kind of CITY is it?
What happens when it
goes away?
How does it work?
How does it get to us?
Without
Electricity…
We might use
Heat - Fires
Communications –
Semaphores
Music - Piano
Learn – Chalk
Board
Our lives would be very different!
The Electron
Its Upwardly Mobile and
Attractive
Anatomy of
an Atom
Electricity
Static vs. Current (Dynamic)
Static
Current
Is Stationary
Flows In Circuit
Brush Your Hair
Wool Socks In Drier
Balloon
Two Main Forms
Turn on Light
Listen to Ipod
Watch TV
Today We Will Study
Current Electricity…
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Electrons in Motion
Electrons are very very tiny particles
Electrons carry energy
Electricity is the movement of electrons
Electricity flows through wires (current)
Current Flows
Like Water
H H H
OH
OH
H
H
OH
OH
H
H
H
O
O
H
H
H
H
OH
OH
O
H HH
HO
O
H
H
O
Electrons flow through
wires like water flows
through pipes
Switch
Supply of electricity
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Electrons
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Light bulb
Frightening
Lightening
The Greater the Potential
Energy (Voltage) the more
the Electrons want to get
back to ground
AA Battery (1.5V)
Plug in the House (110V)
Lightening (100,000,000V)
Electric Safety
Never Stick Anything in an Outlet
Never Touch Metal Around Electric Without
Asking
Never Ever Use Water Around Anything Electric
Finger
metal
Heavy
contact
points
Light pressure – many
very few
contact
points
Wet Skin
metal
Water increases contact area
between skin and metal
How is Electricity Made?
Batteries
Generators
Batteries
Use Chemistry to Release Energy
Store a Fixed Amount of Energy
Big Batteries are Needed to Store
Lots of Energy
Portable
Cars, Phones, Flashlights, Ipods,
Laptops, GameBoys, Boats
Generators
Use Energy to Make
Electricity
A moving magnet is able
to push the electrons
along a wire.
The energy to move the
magnet is carried by the
electricity.
Magnet
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Magnet has to move to make electricity
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Electrons
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Light bulb
Power
Factories, homes and schools
need large amounts of energy!
Generators in power stations
supply electricity to these
factories, homes, and schools.
These generators are in
power stations and are huge!
A Power
Station
electric
current
How to Generate Electric?
Turn the Turbine
Coal
Natural Gas
Nuclear
Hydroelectric
Wind
Solar
Thermal
Waves
Source: Energy Information Administration (EIA), Electric Power Monthly,
June 2011, Table 1.1, 2010.
Electricity Transmission
• The electric current is generated in the power plant
• AC of 60 Hz is produced and distributed at high voltage
Electronics
Circuits are used in …
Computers, ipods, cars, clocks …
Keyboards …
… everything electric
Electronics
Circuits are used in …
Communications, phones, networks, TV’s …
Satellites …
… everything electric
Electronics
Circuits are used in …
Integrated circuits (IC’s) …
Chips …
… everything electric
Drawing Circuits
A Battery
A Motor
A Lamp
M
References
Institute of Physics (IOP) in London, England
www.iop.org
neoK12
www.neok12.com