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Electricity & Inventions (II)
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Hello everyone! We are going to continue learning about electricity and inventions.
00:00:00
In this video, we will cover electric currents, materials, and electricity and magnetism. Let's
00:00:10
begin. An electric current is the flow of electrons between atoms. Electric
00:00:26
currents are the movement of an electric charge. Electric currents need energy.
00:00:46
Energy comes from a power source.
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The power source can be a battery or an electrical generator.
00:01:01
Materials.
00:01:14
Some types of matter have electrons that move easily from one atom to another.
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They are called electrical conductors.
00:01:27
Metals are electrical conductors. For this reason, wires are made of metal.
00:01:32
Wires need to allow electrons to move easily between atoms.
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Metals are electrical conductors, so they are able to do this.
00:01:55
Materials can be conductors or insulators.
00:02:04
Conductors allow electric current to pass through them.
00:02:13
Metals like iron, silver, aluminum, and copper are conductors.
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Insulators do not allow electric current to pass through them. Wood, rubber, and plastic
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are insulators. Electricity and magnetism. When electric current flows through wires,
00:02:46
a magnetic field is produced. This happens because negatively charged electrons are
00:03:07
moving through the wire. Negatively charged electrons are moving through the wire.
00:03:20
On the photo on the right, you can see a wire. The magnetic field is stronger
00:03:32
if we put the wire into a coil around an object made of iron. This forms an electromagnet.
00:03:46
In the photo on the right, you can see a simple electromagnet. The wire is coiled
00:04:03
around an iron nail. Okay, that is all for now. Until next time, goodbye!
00:04:11
- Autor/es:
- IDOYA PÉREZ MARTÍN
- Subido por:
- Cp castilla alcobendas
- Licencia:
- Reconocimiento - No comercial - Compartir igual
- Visualizaciones:
- 108
- Fecha:
- 23 de mayo de 2020 - 17:13
- Visibilidad:
- Público
- Centro:
- CP INF-PRI CASTILLA
- Duración:
- 04′ 27″
- Relación de aspecto:
- 1.53:1
- Resolución:
- 1216x796 píxeles
- Tamaño:
- 158.47 MBytes
