00:02 Good day, class.

00:15 My name is Eme Nnamdi John.

00:16 I'll be taking you on physics,

00:18 through the topic, energy and society.

00:22 Now, our first objective today,

00:26 at the end of the study,

00:28 Lena should be able to know one, the source of energy,

00:32 two, to know the difference between renewable

00:35 and non-renewable energy,

00:37 three, to know the uses of energy.

00:41 All right, first, what is energy?

00:46 Energy is the ability to do work.

00:50 Energy can be transferred from one place to another.

00:54 Now, you can see every day, today's activities,

00:57 we are making use of energy.

00:59 You can see whatever thing we are doing in life,

01:02 we are using energy, and without energy,

01:03 we cannot be able to do things.

01:06 Now, we are told that what energy resources

01:09 refer to the substances like fuel, petrol,

01:13 products, and electricity in general.

01:17 Now, these are the resources of energy.

01:21 We have the fuel, we have the petrol, we have the products,

01:25 we have the electricity in general.

01:27 Now, electricity is part of energy,

01:30 we have the fuel, it's part of energy,

01:33 we have the petrol, which is comprised of what's the liquid

01:35 and the gas is also what's an energy.

01:38 All right, let's talk about the source,

01:44 sources of energy.

01:45 How do we get this energy?

01:47 For what we can talk about energy,

01:49 we need to talk about how this energy come into existence,

01:53 how we got this energy.

01:55 Now, we're looking at different energy in our society today,

02:00 because I know that so many researchers are still looking

02:03 for more energy in our country, outside the country,

02:06 but with this little one, we're going to be looking at

02:09 these that we have before us.

02:11 Now, we have one, we have the petroleum

02:14 and the natural gas, which is the full sea fuel.

02:18 These is one of the sources or one of the sources of energy.

02:23 We have nuclear energy, these are the release of energy

02:28 in the society.

02:30 When we release energy into the society,

02:31 is the nuclear energy.

02:33 We have the solar energy that is energy

02:36 got it from the sun, that is what we call the solar energy.

02:39 We have the wind energy, we have wind energy,

02:45 we have the hydroelectric energy.

02:48 The word hydro means water, we have geothermal energy.

02:53 The word "tama" to tell you that what it is heat.

02:57 But I will see, explain them, let me just run it down

03:01 for Rosal, we can be able to know the sources of energy.

03:04 We have energy from coal and wood.

03:07 We know most of us, we do cook

03:09 and we are using firewood, we are using different things.

03:11 These are part of energy.

03:14 We have TDAW and ocean energy.

03:17 Where we get to the B use that word.

03:20 There are a lot of energy which we don't know about.

03:21 These are those energies, we can be able to get from the ocean.

03:26 We have bio-made water energies.

03:29 Our energy got it from inorganic substances.

03:34 From inorganic substances.

03:35 That way we can be able to get these fermented things,

03:37 we can be able to get those energy from this place.

03:42 All right, let's talk about the petroleum and the natural gas.

03:48 Like I said before, I said petroleum

03:52 occurs in two forms, which are in liquid form

03:55 and also in gaseous form.

03:57 We are told that in liquids, the liquid

04:00 petrol naturally in reservoir is called the crude oil,

04:04 which you already know, crude oil,

04:07 and gas petrol oil is the first as natural gas.

04:12 How we are told that the crude oil is classified into two,

04:14 which we have what's the light, crude oil,

04:16 and we have what's the heavy crude oil.

04:20 We have the light, crude oil, and what's the heavy crude oil.

04:26 Now we'll talk about the nuclear energy.

04:32 I've said this is the amount of energy released in the environment.

04:36 Now, we'll go to, let's say for an industry

04:41 we see that what a lot of nuclear energy is being released.

04:43 Even in our society today, even in our environment,

04:46 nuclear energy is what is being released in large amounts.

04:49 It's being released every day, every second, every hour.

04:53 These energies are being released to rose.

04:56 We have the solar energy.

05:00 We know that the solar energy is going from the sun.

05:04 These are the energy from the sun,

05:06 which mostly plants, mixtures of them very well.

05:10 Plants, mixtures of what, the energy from the sun,

05:16 very useful to the green plants.

05:18 Without the sun, the green plant cannot be able to manufacture its food.

05:22 Without the sun, because if you should plant anything

05:27 in the room where there is no light,

05:29 probably that's our plants would die.

05:31 Reason because there is no sun or solar energy.

05:36 This is very useful to man.

05:39 The sun is very useful to man.

05:41 We use it every day in Asmode.

05:42 And many people will say that the sun is too much.

05:44 But at the same time, there are many people

05:46 who are seeing mixtures of this sun

05:48 to generate heat in their homes and even in their crops.

05:54 Now, we have the wind energy.

06:01 This results from an evil heating of the earth's surface.

06:06 Wind energy can be used to produce

06:08 last-scale of electricity that could be tied

06:12 to the National Electric Network.

06:15 Now, that is what the wind energy can be able to produce

06:20 last-scale of electricity that will be used

06:24 in the nation worldwide.

06:26 Now, we have what the geothermal energy.

06:31 This is heat within itself.

06:35 That is the heat that has been produced in the earth.

06:38 We are told that throughout this energy

06:39 that has been generated whenever water comes in contact

06:42 with a hot rock below the earth cross

06:46 or below the earth's surface.

06:50 The rock give out heat that makes the water hot enough

06:54 to turn into steam.

06:56 Now, what are we trying to say that for geothermal energy

07:01 to take place, water will come in contact

07:04 with a hot rock of the earth's surface.

07:09 If these two substances come together,

07:12 it will produce the geothermal.

07:14 And the thermal itself means heat.

07:17 And by so doing it will produce heat.

07:19 And by so doing heat already is also an energy.

07:24 Now, we'll talk about energy from coal and wood.

07:31 Now, if you go to the rural areas

07:34 you see that many, if not most,

07:38 many are still using firewood to cook.

07:41 And by so doing this will produce energy to the environment.

07:45 Like we said, we said this is the release when they are heated.

07:49 The release energy is used in power electric plants

07:53 and driving some locomotive for domestic uses.

07:58 Wood is still a major energy resources

08:00 for cooking in energy.

08:01 Like I said before, that wood is what most of us

08:05 we are using even in the rural areas.

08:07 Whether we use the wood, when there is no dust,

08:09 or whether there's no stove, we use the wood.

08:13 And by so doing it produces what's more energy

08:17 into the environment.

08:19 We have tida and ocean energy.

08:23 This energy is produced from tida and ocean.

08:26 Tida are due to gravitational pull of the moon

08:31 on what are surrounding the Earth,

08:34 the gravitational pull of the moon

08:36 on what are surrounding the Earth.

08:40 Okay, we have the bio-man energy.

08:48 Like I said before, as I said, these are the energy

08:53 that is getting from either from poultry,

08:57 from animal escrets from inorganic substances.

09:02 These are where these energy are being gotten.

09:06 And these energy are used in agriculture

09:11 to produce more food for man.

09:15 Now like we said, this is the energy from the gradation

09:19 or fermentation as such, such as the organic material

09:24 like the poultry with the wheat, the animal excretion,

09:28 the cabbages, and more of it.

09:31 We have many of it.

09:33 These are ways of producing what's energy.

09:36 Rotitins can also be produced also.

09:38 And those Rotitins, like when we get to the dustbin,

09:43 you see that a lot of Rotitins are there.

09:46 But we'll put it in the soil.

09:47 It's helped to produce the crop to produce more fruits.

09:54 For the farmers.

09:56 Okay, let's talk about renewable and non-renewable energy.

10:03 Now, what is renewable energy?

10:06 These are the energies or these are resources.

10:10 Or these are energy that can be replaced.

10:14 Now, we have energy that can be replaced.

10:15 After they are being used, we are to replace it back

10:20 so that it can be able to be used in another form.

10:23 When these energy are being used,

10:26 when these energy are being used,

10:29 we tend to replace it so that we can be able to use it

10:31 in the other part or in other ways.

10:34 Now, example of solar.

10:35 The example is our solar energy.

10:37 We have the wheat energy.

10:39 We have the water energy.

10:40 We have the bio-made.

10:41 We have the tidal power and both fruits.

10:47 Now, these are the energies that can be replaced.

10:51 After they are being used, orders can be replaced.

10:54 Now, what are non-renewable energy?

10:58 These are the energies that can never be replaced.

11:02 After they are being used, they can never be replaced again.

11:05 Now, we have, for example, as nuclear energy,

11:09 when this one is being replaced in the environment,

11:12 it can never be replaced again.

11:14 We have the radiative materials also.

11:18 When they are being used, they are not being replaced.

11:20 We have the petroleum and the natural gas.

11:22 When they are being used, they are not being replaced.

11:25 We have the coal and the wood.

11:28 We have many of them that can never be replaced

11:30 for the non-renewable energy.

11:35 Now, uses of energy.

11:38 Now, energy is useful and vital in the following areas,

11:42 such as one, like I discussed before,

11:45 it is used in agricultural.

11:48 Now, in agriculture, we make use of energy,

11:51 like we talk about the bio-man energy.

11:55 These are from the inorganic materials.

11:59 When we have those inorganic materials,

12:00 it can be able to help us help the plant to grow.

12:04 And these are energy and to help the farmer,

12:08 to help the farmer to able to grow more crops

12:12 and making the crops or making the land to be fertile.

12:16 Now, we'll talk about our forms of transportation.

12:20 Energy also helps us in terms of transportation.

12:23 Now, without the energy, we cannot be able to transport

12:26 booze, we cannot be able to go different places,

12:29 we cannot be able to move from one place to another.

12:32 Why? Because of what?

12:33 Energy is what has been applied.

12:35 Like I said before, energy is the ability to do work.

12:38 And without the form of transportation,

12:40 energy cannot be done.

12:41 Energy has helped us in terms of transportation.

12:46 Now, waste collets are recycling.

12:48 Now, by this also, these can help us to recycling

12:53 a lot of things as an energy.

12:55 We can be able to recycle some things that we can be able

13:00 to use them again to make other things.

13:04 Like we already said, we can be able to transform some things

13:07 from one point to another.

13:10 Now, we also have information technology.

13:13 Like our handsets, it's part of energy.

13:16 It has reduced us going from one place to another.

13:19 Instead of me going from here to a particular state,

13:22 I can be able to make a call.

13:24 Hello, these.

13:25 These are part of energy.

13:27 It has a post to reduce energy.

13:29 Instead of me going from here to another state,

13:32 from here to another state, by information technology,

13:36 it's going to help me to reduce going to the place.

13:43 We have communication.

13:44 Like I said, information also.

13:46 When we have information, we can be able to do things.

13:48 Communication also can also give us information also.

13:50 When we can be able to communicate from another person

13:53 to where they are or where, or that person are or where,

13:56 we find each other.

13:57 We can be able to communicate that far distance

14:00 or near distance.

14:01 Communication also reduced us to help in energy.

14:07 We talk about the electricity to industry and home.

14:12 Now, these are usefulness of energy.

14:14 We consider electricity today helps us in terms

14:18 of doing things in our houses.

14:20 Help us in terms of ironing, help us in terms of cooking,

14:24 in terms of vision and other things also.

14:29 We talk about heating and cooling of homes.

14:32 Now, due to the energy, like the AC can help us in terms

14:36 of cooling, the refrigerator also can help us in terms

14:40 of cooling our meat in terms of where we don't want to re-pabolize

14:44 things every day.

14:45 We can just put inside the freezer.

14:46 It's can help us.

14:47 Or heat also can help us in terms of preserving things.

14:53 That is part of what energy is useful in our society

14:58 for domestic equipment.

15:01 A lot of things, domestic equipment.

15:04 We can do a lot of things with energy.

15:06 You can do things a lot with energy.

15:13 All right, let's talk about the environmental impact

15:19 of energy use.

15:23 Now, energy use, impact in our environment,

15:28 the environmental impact of energy use.

15:32 Now, energy use of the impact in our environment

15:37 are truly following.

15:38 We have what the acid drain, we have the global warming.

15:42 We have the greenhouse effects.

15:47 We also have the global warming, like I said.

15:50 We have the oil spillage.

15:52 Now, we're taking them one after the other.

15:55 Let's first take the acid drain.

16:02 Now, this is carried out, or this is due

16:05 to the emission of sulfur oxide in the environment,

16:09 or nitrogen oxide in the environment.

16:12 And they are carried to the edge by a rain drop,

16:16 or snow, fogs, or juice.

16:20 These are ways-- these are be what don't in our environment.

16:26 The acid drain, like you can see in the diagram, we have this.

16:30 We have the HNO3.

16:31 We have H-Wed S-O-F-O.

16:33 Now, the acid drain destroys things in the environment,

16:38 like the trees you can see, the trees.

16:42 Now, coming down, we have it as what's

16:44 as the water coming down.

16:46 And there's an evaporation of what's N-O-2 and what's S-O-2.

16:53 Now, look at the acid drain.

16:55 It's dropping as what's destroyed the plants that are here.

16:59 Look at from the diagram, you can see that it's of trees

17:02 killed by water by acid drain.

17:04 Now, this acid has destroyed these trees.

17:08 And by so doing, it has been evaporated

17:11 into the earth.

17:12 Now, like I said, I said, these results

17:16 when gives us emission of sulfur oxide and nitrogen oxide.

17:22 And they are carried to the edge by rain drop, by rain drop.

17:29 We have the green house effects.

17:34 This is a trapping and the heat in the lower atmosphere

17:38 of the edge or any other planet caused by increase in carbon

17:44 for oxide or increase of carbon dioxide,

17:47 which is more transparent to solar radiation

17:51 than to the reflected radiation from the edge.

17:54 Now, what are we trying to say here?

17:56 This is the increase of carbon for oxide, which is water.

18:02 Which is more transparent to solar radiation.

18:06 Now, we'll talk about the radiation, which

18:08 when something's being radiated, when light is being radiated.

18:11 Now, down to the reflected radiation from the edge.

18:16 Now, this is what causes what the green house effects,

18:20 like we said, it causes by increase of carbon dioxide,

18:26 increase in carbon dioxide.

18:31 We have the global warming.

18:34 We have told that global warming is simply

18:36 the increase in the temperature.

18:39 Now, when there is an increase in the temperature,

18:41 when there is an increase in heat in the environment,

18:44 increasing heat on edge or at atmosphere,

18:48 increase in temperature, what is temperature?

18:50 The degree of hotness or coldness.

18:52 It might be a hotness in the edge or it might be hotness,

19:00 it might be coldness.

19:01 That's what I was saying about global warming.

19:03 It's simply the increase in the temperature of the edge

19:06 atmosphere caused when something does, such as carbon dioxide,

19:11 smoke.

19:14 These are things that causes what global warming.

19:16 We have caused by gases such as carbon dioxide and smoke,

19:24 which have been trapped, the sun's heat.

19:28 When all these are being trapped, it causes what global warming.

19:33 It causes global warming.

19:37 We have oil spillage.

19:43 This is the release of liquid petroleum

19:47 hydrocarbon into the environment.

19:50 Now, this is due to human activities.

19:55 Now, due to this, human activities can cause pollution.

19:58 That is why you see most times, you go to some areas

20:01 where there is oil.

20:02 You see people trying to see oil from that place.

20:05 And by so doing, it will cause oil spillage.

20:08 And oil spill can cause pollution.

20:10 Either water pollution, land pollution, or air pollution.

20:14 By this oil spillage, it can cause a lot of plants to die,

20:19 to cause water, fish, or any aquatic animals inside the water

20:25 can die because of oil spillage.

20:28 And it has been caused by man.

20:31 Why is it caused by man due to the recklessness of--

20:36 due to the carelessness of man can cause

20:38 pollution.

20:39 Either water pollution, either air pollution,

20:42 either land pollution.

20:45 And all these can cause pollution.

20:47 And by so doing, it's caused oil spillage.

20:52 OK, let's talk about energy crisis.

20:58 Now, energy crisis is sorted of supply,

21:04 or the sorted of increase in demand.

21:08 This can cause energy crisis.

21:10 The sorted of what's of supply or increase in demand.

21:18 When there is increase in demand, it can cause energy crisis.

21:21 When there is a shortage of supply,

21:24 it can also cause energy crisis.

21:29 By so doing, it can-- energy resources

21:31 toward the economy.

21:33 It can cause shortage in the supply,

21:37 or in the demand.

21:38 Like I said, yeah, I said energy crisis.

21:41 Any energy crisis is any great bottleneck.

21:44 EG, we have the price limit.

21:47 There's a price limit.

21:47 It can cause energy crisis.

21:49 Whether there's a price limit in anything,

21:50 maybe less, for instance, there's increase in things.

21:54 People tend not to get those because of the high rates.

21:58 Well, shortage-- whether there's a shortage of it,

22:02 it can also cause energy crisis.

22:05 Whether there's a shortage of it, also,

22:07 when it is limited in the society or in the economy,

22:10 it can also cause energy crisis.

22:12 Now, these are the ways that--

22:20 either by what-- by price rise, or shortage, or scarcity.

22:26 All these can cause energy crisis.

22:30 Evaluation-- like I explained before,

22:34 I believe we should know what's the mean of energy.

22:40 With this cost about it, we can be able to differentiate

22:43 between renewable energy and non-renewable energy.

22:48 Like I said, that energy is the ability to do work.

22:52 Let me just simple our phrases for all.

22:54 First of all, we can see, go more details

22:57 to get the meaning of energy.

23:02 Now, you can also get the difference

23:04 between renewable energy and non-renewable energy.

23:10 Like I said, renewable energy--

23:11 those energy that can be replaced--

23:13 why non-renewable energy that can be replaced.

23:17 So you can see, go more, to see, find different things.

23:20 I gave different examples about renewable--

23:22 non-renewable, you can see, go more,

23:24 to get the differences between these two.

23:29 Now, what is energy crisis?

23:31 Like I said, it can be the increase in price,

23:39 shortage, or the discussities of energy--

23:43 can cause this world's energy crisis.

23:45 So you can see, go more, and get more energy crisis.

23:54 Thank you for watching.

23:56 I am Eminem Dijon.

23:58 See you next time.

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