Saltar navegación

Activa JavaScript para disfrutar de los vídeos de la Mediateca.

Energy Review

Ajuste de pantalla

El ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:

Subido el 8 de mayo de 2020 por Isabel María M.

103 visualizaciones

Más información Transcripción

Descargar la transcripción

hello boys and girls today I'm not going to do my beautiful drawings I have done 00:00:00
these mind map and that you will have available to and I'm going to explain it 00:00:07
on this okay so this is our review of the unit four of the unit energy okay 00:00:13
the one that we did when the quarantena started okay so we haven't studied it in 00:00:20
class only here with a computer okay so energy what is energy energy is the 00:00:25
ability of something to perform at work okay to do something really okay it's a 00:00:31
bit complex that concept but it's just the ability to work okay there are many 00:00:38
different forms of energy in the world these are the forms of energy do you 00:00:45
remember mechanical which can be potential or kinetic potential energy is 00:00:50
the one that an object has just because it's in an up it's up okay it's in the 00:00:55
top of something this is the energy it has because it can fall okay thanks to 00:01:02
gravity this is the energy that it has okay kinetic energy is the energy that 00:01:07
any object has when it's moving right chemical energy is the energy that you 00:01:12
can find in fuel or in the food that you eat. You eat the food, it has 00:01:19
proteins and carbohydrates and fats and that gives you energy to move. 00:01:25
Electrical energy that you can find in many different house 00:01:32
appliances. The nuclear energy that you can get when you break 00:01:36
the nucleus of an atom, radiant energy which is the light, thermal energy which 00:01:43
is heat, and sound. Sound is also a type of energy. So these are the different 00:01:50
forms of energy. Remember it's very important that the energy is never 00:01:55
created or destroyed, it just changes the form. So for example the energy 00:02:00
that is in, I don't know, in a chocolate bar that you eat is a chemical energy 00:02:07
and you transform this chemical energy into kinetic energy for example if 00:02:12
you're running okay and you use this energy that the food gives you it's the 00:02:17
same with lots of different processes of energy many energy do you remember the 00:02:23
exercise we did about the water the water in the in the reservoir has 00:02:30
potential energy because it's up when you open the door las compuertas the 00:02:35
water falls down so this energy is transformed with the turbines into 00:02:41
electrical energy okay but first has potential energy and then kinetic 00:02:45
because it's moving okay it rotates okay so this is important that energy is 00:02:49
never created or destroyed it just changes the form where does energy come 00:02:54
from different sources of energy okay do you remember there is renewable energy 00:03:00
that means that it never runs out for example solar energy will always have 00:03:05
the Sun okay well maybe in four thousand billion years it disappears but we don't 00:03:10
count this as as an end of the solar energy okay we have eolic energy because 00:03:16
of the wind hydroelectric energy do you remember it's also renewable because 00:03:22
thanks to the Sun the water cycle is always renewing okay and the biofuels 00:03:27
Biofuels are made sometimes with the excrements of living things, or with the dead bodies 00:03:33
of living things, things that are also created, that we also have, we'll always have. 00:03:41
Then we have the non-renewable energies, for example petroleum, it will run out anytime. 00:03:50
Natural gas, though it might be confusing because it's natural, but there is a limited 00:03:56
amount of natural gas in the in the world so it's a non-renewable energy the same with coal 00:04:01
and uranium which is the the element that we use for the nuclear energy okay all these types of 00:04:08
energy are non-renewable that means that they run out okay there's a limited amount of these 00:04:15
sources of energy right okay do you do you remember that renewable energies have 00:04:22
um they are good for nature and non-renewable energies have some problems like the acid rain 00:04:29
or pollution okay deforestation they have different problems okay and then and the other 00:04:36
important thing about this unit was saving energy okay you remember saving energy is good for the 00:04:45
environment and remember to save energy there are many things in the book they say lots of things 00:04:51
about the the houses with special kinds of roofs but important things for you to do are the three 00:04:56
r's okay you have to remember reduce that means use less things okay don't use a lot of things 00:05:03
if you can only use one for example if you have a mobile phone and it works perfectly why do you 00:05:10
have to change it you don't have to change it just because a new model has been in fashion okay 00:05:16
if your mobile phone works you don't have to change it okay this is reduce you don't need to 00:05:22
have many many many things because then what do you do with them okay this is just creating more 00:05:28
waste so reduce important reuse when you have something that you don't use anymore hello 00:05:32
when you have something that you don't use anymore and you can give it another opportunity you can 00:05:38
use it for another thing these are the typical things like for example with the cartons with 00:05:45
different papers, you can use them again or you can create new things. And recycle. 00:05:50
When you finish using papers, you have to recycle them in the blue bin. When you 00:05:54
finish using glass, you have to recycle them in the green bin. Remember to 00:05:59
recycle the things that you cannot use anymore. So these are the important 00:06:03
things about energy. 00:06:07
Idioma/s:
en
Autor/es:
Isabel M. Moreno Llamazares
Subido por:
Isabel María M.
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
103
Fecha:
8 de mayo de 2020 - 8:40
Visibilidad:
Público
Centro:
CP INF-PRI CARMEN IGLESIAS
Duración:
06′ 10″
Relación de aspecto:
1.78:1
Resolución:
1024x576 píxeles
Tamaño:
88.01 MBytes

Del mismo autor…

Ver más del mismo autor

EducaMadrid, Plataforma Educativa de la Comunidad de Madrid

Plataforma Educativa EducaMadrid