ENERGIA ENERGY
GRUPPO 3
TIPI DI ENERGIA
TYPES OF ENERGY
GRUPPO 2
L'UNITA' DI MISURA DELL'ENERGIA
UNITS OF ENERGY
GRUPPO 5
TRASFORMAZIONE DELL'ENERGIA- I PRINCIPI DI CONSERVAZIONE DELL'ENERGIA
TRASFORMATION OF ENERGY - PRINCIPLES OF ENERGY CONSERVATION
GRUPPO 6
ESEMPI DI TRASFORMAZIONE DI ENERGIA
EXAMPLES OF ENERGY TRANSFORMATION
GRUPPO 3a
Mechanical energy
Electrical energy
Electromagnetic energy
GRUPPO 6a
GRUPPO 6b
GRUPPO 1
COS'E' L'ENERGIA
WHAT IS ENERGY
GRUPPO 3b
Sound energy
Chemical energy
Nuclear energy
Thermal or calorific energy
a man that is dragging a cart transormed his metabolic energy into kinetic energy but some has transformated into heat.
The International System measure energy is
joule (J)
CGS
ERG
equal to 1 dyne.centimeter
The chemical energy of the battery is trasformed into electrical energy
centimeter-gram-second system
In stars the nuclear energy in light atoms is transformed into
LUMINOUS
THERMAL ENERGY
other unities used for measure energy
is the principal work of the nuclear power station
elettronvolt
british termal unit
kilowattora
is the principal work of the nuclear power station
caloria
the chemical energy in pyrotechnic substances is transformed into
mechanical
Heat energy
sound
luminous
thermal energy
the luminous energy of the sun
is transformed directly into electrical energy
Kilocalory
in a combustion engine chemical energy of fuel is transformed into thermal energy
calory
cal
kcal
express larger quantities of heat
some of this energy is transformed into:
heat
movement
sound energy
in a mixer electrical energy is transformed into kinetic energy
some of this energy is transformed into:
liquid energy
thermal energy
Energy is the capacity of a body to do something.
: :There is not only one kind of energy. Every type allows us to do something different.
Without the energy we couldn't live
POWER
The power of a machine is the quantity of work it can do in a unit
Efficiency measures the loss of energy
Efficiency (%) = real power:theorical power per 100
It can be divided in
- mechanical power
- thermical power
- electrical power
The real power of a machine is less than its 'theorical' power. This is caused by friction and vibration that lose energy in form of heat.
-is expressed with the formula P=W/t
t is time, measured in seconds (s)
W is work, expressed in joules (J)
Is
The quantity of work done per unit of time
P is power, measured in watts (P)
GRUPPO 4
POTENZA
POWER
For us the most important type of energy is the elctrical energy beacuse is the energy that we use for most thing
CONSIST IN CREATING ENERGY WITH OTHER ENERGY
SOUND ENERGY
POTENTIAL ENERGY
CHEMICAL ENERGY
Position or configuration
Fuel or food
Hear
LIGHT ENERGY
See
ELECTRIC ENERGY
Plug or battery
KINETIC ENERGY
Motion
HEAT ENERGY
Hot
electromagnetic energy prezi: http://svel.to/14h2
kahoot: http://svel.to/145i
thermal energy: http://svel.to/14h5
chemical energy: http://svel.to/14h6
mechanical energy: http://svel.to/14h7
click to edit
without it we can not use everything that use electrical energy