Kind: captions
Language: cs
What do we mean When We Talk about The
energy in a Candy Bar oring Energy or
finding alternative Energy sources What
exactly is
energy energy is a property used to
describe a Wide variety of Things from
the Tini particles to the most Complex
Systems but unlike physical Properties
such as Color Length or temperature It's
better understood by What it Can do than
How It looks or Feels The standard
definition of Energy is the ability to
do work in other Words It's the ability
to create some sort Of Change in an
object whether It's the object location
or The Motion of its atoms All objects
Store Energy but They differ in the
amount and forms of Energy They Carry
For Example Chemical enery is stored in
the bonds that hold molecules Together
potential Energy can be stored in an
object position like this Apple hanging
from a tree and When the Apple Falls to
the ground that potential is Transformed
into kinetic Energy or The Energy of
Motion not only does Energy Come in many
forms but we can also convert it from
One form to another For Example We make
use Of The Chemical energy stored in
fuels like Oil and Coal by Burning them
when we do SO We convert Chemical Energy
into Thermal Energy Heat to warm our
Homes or we can use fuels to produce
electricity The Energy carried by
electrons Moving through a Wire so If we
can convert Energy from One form to
another Why Are People so concerned
about cons it the Fact is not All Energy
forms are equally useful and not All
conversions are Easy to equ efficient
take electrical enery
ex Power All kinds Of technological
devices however as The electricity
drives Computer processors and Lights up
TV screens It's Transformed into other
less useful forms of Energy especially
Heat and Light that Energy isn't Lost it
Still exists but Once released Into the
surrounding environment this relatively
small amount of Heat and Light Can't be
rec captured and converted Back into
electrical Energy and so whether It's
Fossil fuels today Lar alternatives in
Future continue to need New Energy
sources if we want to Keep our hightech
electrified World
[Hudba]
running