energy esquema traducifdo

7/25/2019 Energy Esquema Traducifdo

1/5

ENERGY UNIT 4) CN'E(? b

\

A

~ N E ~ ~ Y : the ability of an object to rnove, heat up

or

produce Iight. La- E ~ ' - ' j , ~ c c..u ck.. D'or-

6

i C ~

r . . . . s ~ c . r ' ' ' ' ' ; ' ' \ .

\..> : rUck;

< - C ~ - - . .

ck

c:J.-,:., ' - -.;:' )

Types of mechanical

energy:r

(.P ',,:)

a

Kinetic energy: it's the energy

of

the form

of

movement C h P - - ~

C ~ ~ L . . - . ~ L . .

cf. - h J

:..- ,.,.......c...

b- Potential energy: energy in the

lorm

01 potential movement f : ~ ~ r c < ' ~

~ l..

~ Q..,- J ' v - . . - . , ~ c.... d .....

~ ~ - . . ; ) ~ ~

p - > ~

Ex.

When

you lift an object

YOLl

give it potential energy

lt).

~ ~ c . . . . . . . l o . . ,

v..---.

6' t.:. L c l ~ v-..-. o

. R _ ~

- .-t . t)

Q

- C . J ~

r , \ c ~ L

( ) - C h e 1 i ~ ~ I ~ - : ~ ~ ~ = . : t:

f .D '-'?-

~ ~

It's store in some substances (in pasta as carbohydrates, in batteries)

~

~ -e---

, ~ . . . t 0 v - v v ~

R . l . : . .


2/5

Q : l e ~ ~ ~ 1

eneF}lY;

E r u . ; ~ 1

ck c- . o.. ~ ~ . . k ~ ,.,

~ ~ ~ ~ I e a r e ~ _ e . r ~ ; E . ~ . ~ c v \

l1 s

stored

in

the atomic structure of all matter ~ er.-.....

~ . - - , ~ ~

a.JL.. ,

'c

& c k . ~ y . . ~ I c u ~

l1 s

transformed in nuclear power stations nto electrical energy k ~ o ; v - - - . . c . > - .

.............

~ . . . r v r l.c :;> G?---'-:02..-..

~ L c . V ~ , >

[WHAT

H PPENS

r

ENERGYWHEN

I T S _ U ~ E D ? J

e

~ ~ -

Lb

o c u r q ~ ; A

iSNE. .G;A

c:..'-.l

ANO ,

SE u T i l,.l

2.A

)

Energy never disappears. It can be transformed from one type of energy into another

c......

c ~

o ~ - i -

;. .. d . i j l F ~

Se..-

y c4.. .u.-.-....lv.-

p

"" k

Ex. A lightning (the electrical energy is transformed nto light energy, thermal energy and sound energy)

(hJ.G(.. ~ A . a v ) v-.. __

)

~

-

u.-.-,

ne O (Q.c.. ~ - '-..... ~ ~ - ~ ~ -


3/5

Some common Energy Transformations: 0 ~ o - - , ~ ~ ~ u t . - - : . c . ~ ele..

e < > ~

c..e. ~

Chemical energy: aeroplanes and cars transform this energy in fuel and petrol nto kinetic and thermal energy

[ r I i l 1 . t ~

~

:

G J . . . . . : = - ~

~

~

~ o , w - r - c v . - -

~

f ~

k

c ~ . u _ ; L . J : k

...

J

~ k

- . - ,

~ ~

Electrical energy: fans and electrical drills transform it nto kinetic and thermal energy ~ . . t . : C J < -

"0

~ ~ ~

[ ~ ~ ~

b-;,

- - J ~ ~ J

J::oJ.o..Jno )

~ ~ ~ ~ ~ O v - - - r - . 12--. ~ ~ - - ~ Z

Light energy: solar panels transform light energy from the Sun nto electrical energy

5-::.b,

....

-..-

eYe f ~ ? a Q ~

~ ~ ~

~ ~ y

~ d

[ H ~ ~ j ) C ?

M ~ ~ S J , ~ ~ ~ T . H E

E N ~ R G Y

-FOOO?)

el

OMo

~

~ l ~ = :

e N - ~ G I A

N

I A

cOMioA

A

?

This c ~ l e m i c a l energy stored

in

food and drinks is measured

in

calories. t::J;;... '''-rv:r:-

J

~ . . . c : L

R,-....... c ; . . ; , . ~

' ( )

6.,..

.S-e-.. ~ ~ ~ ~ l . . C c : : )

Ex.

Nuts, red meat and cheese have many calories

..

L ..

t....,.,.

. . > ~ . i u

"

-+-

-

, ._17

-J ~ J :>.J (.. - - : : .

Vegetables and white meat have few calories

\l

_ J ~ ~ J c . . C - . l ~

b k ~ u . > - ~

F ~ c . . . c L ~ ~ ~

l

L A S ~ I F I C A . I O _ N . _ O F ~ ~ E ~ Y

~ ~ ~ R . ~ _ ~ ~ . . J

L-ASiF CAGi Q

Ole

LA


4/5

Wind energy: from the movernent of airo The kinetic energy produce electrical energy

; n . R f t ~ Cok.... ... ,o cL. t Y \ c ; J ~ cki-

o.j-r.fL

Le.. ~ T C L ~ ~ ~ ~

Solar energy: the light and the heat is transformed nto electrical energy

[vvLP C ;; s.::.l...n., k ~

J

.J. uvt.,., ~ ~ ~

-e---.

. . J . . , ~ t ~

Biofuels: from plants and animal products, It can be biomass, bioliquids

or

biogases, It produces electrical energy

. O ( . D ~ ~ ~ ; ck- r o ~ ~ c ~ < ~ J ~

f 1..LcLk

s .:, 6z

o

rr.c\/:)Cl.. J 6 A o l : l , l . . . . . . ; : , . J . , . . ~ ':) b : o ~ a . : )

_ . _ ~ : q ~ . . . J o - < . . J ~ _

( ~ : . J . J ~ = - ~ ~ ~ _ ~ . Y . l I . ~ ? J ~

. ~ r 1 ~ r g > - : ~ - u r c e ~ ~ : c ~ - ~ ,Jo O ~ o 0 ( - . J ~ ~

they are limited: So-.- ~ ~

PetrQ. um.

r . J , w ~

l1's the source of the fuel oil, diesel fuel and petral that we use it Var heating and vehicles.

[./) Qa-, } - ~ - k . ck. k ~

..

.,ot......:-o.....

~

'J:.>le. J ~ ~ { J J ; . . v . / . ) C V T - < - - ~ e.-,..,

c . A - J ~ . : .

'0 . l . I k . : ; ~ ,

It s also use to produce electricity in power stations

$e... - ?C,-

i c ~ F =

r ~ ~

Coal

L-c;nJoo':

l1's used as fuel in industry and to produce eleGtricity in power stations

SeV\r:>c-.

. . c , , -o

< - = ~ ~ ~

~ k

( , , ~

OC '-

FJ.u-u;1

~ ~

j . , , , ~

Natural gas

GOr;>

A J c ~ - - r . a . J . .

l1's

a mixture

of

gases. . , . ~ . . . - - . . t , . , ~

< : y v ~

l1's used as fuel in ndustry, to produce electricity in power stations and for heating and cooking

$e. AN>e- c : . . . = , . . . . . ~ I . . . o , . . . . . . k v ~

.

.e . .. ~ ~ ~ . : ; . , - i l i - e t . ; ~ U ~ C-R-ltnal.,-:> J

c....o1eJc

~

< G > ~

Uranium ( ) . ; 1 . . , ~

i1's

used in nuclear power statiolls to produce heat in nuclear reactions

s.e... v.r:>c... ~ ~ =

/ 7 V . . ~ . . ,

r

cJ l- ('l"""O c.,..e-J...of\..e..,...... U 2 - G t ~ ~ '

.....

-


5/5

; H OW A - W E P R O T E C T O - ; ~ ~

C O M ~ o pOE:

\'-tOS f ~ o l L G ~

rJUES ilZa

pl.-ANrTA

Use non-renewable energy sources causes two problems: b L N\r >O ck N..-

2. F ~ G \ - o : : > ;

1- These sources are limited

~

I :n - - .

L . . ; ~

.

2- They produce pollution ( global warming and acid rain)

c o . . j . ~

(

? ~ ~ ~ ~ crh:.J. J ~ ,

I ,Q

~ o \ J ~ - - - : > C - C V ~

The three Rs protect the environment

La..--: . t ~

R' l '= t ; , _ ~ d ~ L o

-Reduce: buying things with a little paekagng ~ 1 : C o ~ c . . ~ . ~ 0.. - ~ ~ F - ~ u :

-Reuse: use glass, metal and plastie eontainers again and again

+ n ,\._'_1:__ -

J v.-.-.e ' ;:)

, 'Cl.

, J . ~

..

R..uJJ0 lt ..11 ; ~ l J . ~ ~ r : : > de- i

-Recycle: separate rubbish in the correet bin

~ -

~ . . r < . = . . n

L

b c ~ - ~

- - ~

energy esquema traducifdo

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