0:01 Smile [Music]
0:03 [Music]
0:06 and learn.
0:09 Welcome back to Science Madness.
0:12 In today's program, we're going to learn
0:14 more about electricity. We'll create an
0:17 electrical circuit and we'll find out
0:19 which materials are conductors and
0:28 We will start by building an electrical
0:31 circuit which as you know is a closed
0:34 path that electric charges flow through.
0:37 I will need two wires, a light bulb and
0:40 a battery. We will attach one end of the
0:43 wire to the light bulb and the other to
0:46 one of the batteries ends. I'll repeat
0:48 the same steps with the other wire and
0:51 voila, we've just created an electrical
0:54 circuit. The electric charges flow from
0:56 the battery to the light bulb through
0:59 the wires. And as a result, the light
1:02 bulb lights up. Isn't it impressive?
1:04 If I disconnect this circuit, the
1:06 electric current stops flowing and the
1:09 light bulb turns off. When I reattach
1:12 the wire, the light bulb turns back on.
1:16 How cool is that? [Music]
1:18 [Music]
1:21 Let's make this more interesting. What
1:23 would happen if I added this spoon to
1:25 the circuit? Do you think the light bulb
1:28 would still work? Would you like to make
1:30 a bet?
1:33 Ta! The light bulb came on. Amazing,
1:36 isn't it? Just like the copper inside
1:39 the wires, this spoon is made of metal,
1:41 and metal is a great conductor of electricity.
1:43 electricity.
1:46 Silver, iron, or aluminum are examples
1:49 of conductive metals. Conductive
1:52 materials allow electrical charges to
1:54 flow through them and therefore are the
1:56 best materials to add to an electrical circuit.
1:58 circuit.
2:00 But conductive materials aren't only
2:03 metals. Water, for example, is also a
2:14 Let's try another type of material. Look
2:17 at this rubber ducky. If we attach it to
2:20 the circuit, what will happen? Will the
2:22 light bulb turn on?
2:26 Ooh, the light bulb didn't turn on. The
2:28 little ducky is made of rubber, and
2:31 rubber is an insulating material.
2:33 Insulating materials do not allow
2:35 electric charges to flow through them.
2:37 That's why the light bulb didn't light
2:40 up. Other materials such as paper,
2:44 plastic, or glass are also insulators.
2:46 As you know, electricity can be very dangerous.
2:47 dangerous.
2:50 So, insulating materials are used to
2:52 protect us from it. For example, the
2:55 outside of wires are made of plastic and
2:59 electricians gloves are made of rubber.
3:01 Well, I think that's it, friends. I hope
3:03 you had fun and at the same time learned
3:05 a lot of interesting things about electricity.
3:07 electricity.
3:14 [Music]
3:17 We've learned so much in just one video.
3:20 Did you know there are many more videos?
3:22 Imagine how much you could learn.
3:24 Subscribe to the Smile andLearn
3:26 educational channel to learn and have
3:30 fun at the same time. [Music]
