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

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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:

nuclear energy

liquid energy

thermal energy

blender-10935_960_720

cart-2845274_960_720

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

images

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

1352190458_b_energy-recapture-600x350

Mid_Grade_Fuel_icon

isola-di-calore

occhio

orecchio_staminali_grasso

motion

depositphotos_101974996-stock-illustration-location-travel-geo-pin-vector

electromagnetic energy prezi: http://svel.to/14h2

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