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  • Hi, Bob the Canadian here.

  • Welcome to this English lesson about electricity.

  • Now, I should tell you,

  • I did do a lesson earlier this year about electricity.

  • I'll put a link right there, if you want to check it out,

  • but in that lesson, I was in my classroom,

  • and in order to teach you words and phrases

  • about electricity in English,

  • I simply held up pictures.

  • Now, when you learn a language,

  • it's always good to review things,

  • so I thought today we would review the topic electricity,

  • but I would do it in a way where I show you

  • as many things as I can,

  • and I demonstrate as many things as I can,

  • as I teach you English words and phrases

  • that you'll need to know to talk about electricity.

  • (cheerful music)

  • Well, hey, welcome to this English lesson about electricity.

  • Before we get started, though, if you are new here,

  • don't forget to click that red subscribe button over there

  • and give me a thumbs up if this video helps you

  • learn just a little bit more English.

  • Well, let's talk about electricity.

  • One of the first things I want to talk about

  • is how electricity is generated, or how power is generated.

  • We use the word electricity and power

  • interchangeably in English.

  • Behind me, you can see a wind turbine.

  • This wind turbine is generating electricity.

  • It is generating power.

  • It is using the energy in the wind to turn the blades

  • so that it can turn a generator and create electricity.

  • This is not a windmill.

  • A windmill is something else.

  • I'll put a picture here,

  • so that you can see what a windmill is,

  • but one way that we generate electricity,

  • one way that we generate power is by using a wind turbine.

  • Another way to generate electricity is to use solar panels.

  • You can see this farm behind me has a bull (laughs)

  • and a solar panel installation,

  • so they are using the power of the sun

  • to generate electricity.

  • You can also see in the distance

  • that this building has some solar panels on it as well.

  • If this was a bigger installation,

  • if they had more solar panels,

  • we would call it a solar farm.

  • I'm happy that I was able to show you

  • an actual wind turbine,

  • and I'm happy that I was able to show you

  • a solar panel installation,

  • but I can't show you all of the other kinds of power plants

  • because they don't exist out here in the country,

  • but I will talk about them,

  • and I will put pictures here while I do.

  • We have nuclear power plants,

  • where we use the power of the splitting of an atom

  • in order to create heat,

  • and we use that heat to generate electricity.

  • We have coal-fired power plants,

  • where we burn coal to create heat,

  • and we use that heat to create electricity.

  • We have natural gas-fired power plants,

  • where we burn natural gas

  • and we use the heat that is generated to create electricity,

  • and in Canada, we have hydro-electric power plants,

  • where we use the power of flowing water

  • to create electricity.

  • This behind me is not a power plant.

  • It is simply a power station,

  • or what we sometimes call a power substation,

  • where high-voltage electricity comes in

  • with the power lines on one side,

  • and I think a different voltage goes out,

  • a more usable voltage goes out on the other side,

  • that can be sent to homes and business.

  • So once the power is generated at the power plant,

  • it needs to get to everyone's homes.

  • Behind me you see what we would call a utility pole

  • or a telephone pole,

  • and in this part of Canada, we call this a hydro pole,

  • and at the top, you will see the power lines.

  • That is what we use to get the electricity

  • from the power plant to someone's home

  • or to their place of business.

  • So I'm not sure if you can see this,

  • but there are power lines over there along the road,

  • and then there are power lines that come onto my property.

  • Up here on this pole, you see a transformer,

  • which takes the electricity,

  • takes the power that's coming in

  • from power lines on the road

  • and changes the voltage to be more usable

  • for us here on the farm.

  • The first place that electricity

  • actually comes into a building at our place

  • is in the barn,

  • and the first thing it goes through is a meter.

  • This meter measures how much electricity we are using,

  • so that at the end of each month,

  • the power company knows how much they need to charge us.

  • So this meter measure how much electricity we are using.

  • After the electricity goes to the meter,

  • it goes to what we call an electrical panel

  • or a breaker box.

  • Inside here are circuit breakers

  • and each circuit breaker

  • is for a different circuit in the barn.

  • We have another electrical panel in the house,

  • and it contains circuit breakers

  • for every electrical circuit that we have in the house.

  • This is a roll of electrical wire.

  • This is the wire that runs through the walls of our house.

  • So I just showed you the breaker box

  • or the electrical panel.

  • From the electrical panel, there is electrical wire

  • that runs through the walls of the house

  • to all of the light switches and to all of the outlets.

  • If you are building a home in Canada,

  • you will install electrical boxes

  • in the places where you need outlets

  • and in the places where you need light switches.

  • An electrical outlet in Canada looks like this.

  • We use 120 volts as our voltage in Canada,

  • and this is a typical outlet that you would see

  • in a Canadian home, also in an American home,

  • and of course, to make it look nice,

  • we would put a plate on the front when we are all done.

  • So you would see these outlets in Canadian homes

  • or American homes,

  • and that's what we call them in English.

  • We say that is an electrical outlet,

  • or we just say an outlet.

  • Of course, in some places,

  • you will want to install light switches

  • in the electrical box,

  • and you will want to put a nice plate on the front as well,

  • and then you could use this box to turn off your lights

  • or to turn on your lights.

  • This is a light fixture.

  • You would put this on a ceiling and connect wires to it,

  • and you would screw in a light bulb into the light socket,

  • so that this light fixture would then work,

  • and of course,

  • these wires would go back to the light switch.

  • So there you go.

  • A little introduction to what light switches,

  • what electrical outlets, and what light fixtures look like

  • in a Canadian home and in American home.

  • Electricity is really cool, and it powers a lot of things.

  • This is a small heater here.

  • This is how we refer to this part of any device

  • that uses electricity.

  • This is the cord for that device, and this is the plug.

  • In order for this to work, I need to plug it into an outlet.

  • So that's how you talk about anything that you are using

  • that needs electricity.

  • You have a cord and you have a plug,

  • so if you could just pretend

  • that we are in the house right now,

  • I am going to plug in this heater.

  • I am going to plug it in to this outlet.

  • There.

  • It's not gonna work because,

  • you know, there's nothing on the back.

  • If I needed to put this heater far away from the outlet,

  • I would need to use what we call an extension cord.

  • So an extension cord is a really long cord

  • that you plug into the outlet on one end,

  • and then it has on the other end,

  • a spot where you can plug in whatever you are using.

  • And if you needed to plug in more than one thing,

  • you could use a power bar.

  • So I can plug this power bar into this extension cord,

  • and then I can plug these cords (laughs)

  • into the power bar.

  • One second here.

  • I have too many cords here.

  • So there you go.

  • When you need to plug in more than one thing,

  • you can use a power bar.

  • When you are plugging something in,

  • you want to make sure that you don't touch

  • these metal prongs on the plug.

  • Also, you don't want to touch any bare wire,

  • if the cord is frayed,

  • because you can get electrocuted.

  • When you get electrocuted,

  • it means that the electric current enters your body

  • and it will injure you.

  • Electricity is actually very, very dangerous.

  • Of course, if you're far from an outlet

  • and you're using something small, like a radio,

  • that can run off of batteries,

  • you can always put batteries into it.

  • This is what we call a AA battery.

  • This is a AAA battery,

  • and this is a 9-volt battery.

  • So if you're using something small

  • that runs off of batteries,

  • you can always put batteries in it.

  • Sometimes, when you are using a computer,

  • you need to use one of these,

  • which actually has a few names in English.

  • Sometimes we call it a power supply,

  • sometimes we call it a charger,

  • and sometimes we call it an adaptor.

  • You're probably safe to use any of those three words

  • and people will know what you are talking about.

  • So I don't know a lot about vehicles,

  • but I do know there is a 12-volt battery

  • in every vehicle in Canada and in the United States,

  • and that battery is used to start the vehicle.

  • There is also an alternator in every vehicle,

  • and that alternator turns when the engine is running

  • and creates about 13.5 volts of electricity

  • to charge the battery

  • and to run all of the electronic components in the vehicle.

  • Well, hey, thank you so much for watching

  • this English lesson about electricity.

  • I hope you were able to learn

  • just a little bit more English while you were watching.

  • Remember, if you are new here,

  • don't forget to click that red subscribe button below,

  • and give me a thumbs up if this video helped you

  • learn just a little bit more English,

  • and if you have some time,

  • why don't you stick around and watch another video?

  • (cheerful music)

Hi, Bob the Canadian here.

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    Summer に公開 2021 年 01 月 14 日
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