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CONDUCTION, CONVECTION and RADIATION - Heat Transfer - Primary 5 - Natural Science - Contenido educativo

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Subido el 24 de marzo de 2021 por Diego M.

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In this video, we explain the three ways we can transfer heat, which are conduction, convection and radiation.

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Heat is the transfer of thermal energy that passes from a body that has a higher temperature to one 00:00:00
with a lower temperature. Heat can be transmitted in three ways conduction, convection and radiation. 00:00:14
Conduction is the transfer of heat from a hot object to a cooler object when they are in contact. 00:00:23
The molecules of the hot object move faster. When they collide with those of the cold object, 00:00:33
they transmit that movement causing them to move faster and increase the temperature. At the same 00:00:38
time, the temperature of the hot object will drop until both temperatures are equal. Heat can also 00:00:44
travel through a single object because molecules collide with each other and transmit motion. 00:00:52
Metals are very good thermal conductors, however, other materials such as wood are thermal insulators 00:01:02
because they do not conduct heat easily. 00:01:13
This experiment shows how heat travels through the spoon melting the wax and making the clips 00:01:17
fall. 00:01:23
is the circular movement that happens when warmer particles in a fluid, which 00:01:47
are less dense, rise, while cooler particles, which are denser, drop. These 00:01:52
can be applied to liquids and gases. This room here is filled with air. If we make 00:02:00
some fire at the bottom, those particles, which are close to the fire, will heat up. 00:02:07
When they are hotter, they are less dense than the other ones, so they will rise 00:02:14
and that space will be filled by other cool particles. Then those cool particles 00:02:19
will heat up and rise as the previous ones had done, and the process will be 00:02:29
repeated again and again. And finally radiation, which is the process by which 00:02:33
heat, in the form of electromagnetic waves, is emitted in all directions. The 00:02:40
The best example is the heat of the Sun that travels to the Earth. 00:02:47
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Idioma/s:
en
Autor/es:
Diego Maté Potes
Subido por:
Diego M.
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
67
Fecha:
24 de marzo de 2021 - 17:55
Visibilidad:
Público
Centro:
CP INF-PRI INFANTA LEONOR
Descripción ampliada:
In this video, we explain the three ways we can transfer heat, which are conduction, convection and radiation.

Conduction
This is the heat transfer from a hot object to a cooler one when they are in contact.
The molecules of the hot object move faster. When they collide with those of the cold object, they transmit that movement causing them to move faster and increase the temperature. At the same time, the temperature of the hot object will drop until both temperatures are equal.
Heat can also travel through a single object because molecules collide with each other and transmit motion. Metals are very good thermal conductors. However, other materials, such as wood, are thermal insulators because they do not conduct heat easily.

Convection
Circular motion that happens when warmer particles in a fluid (which are less dense) rise, while cooler particles (which are denser) move down and fill that space. Those cool particles at the bottom are then heated up, become less dense and rise, and this process is repeated constantly.

Radiation
Process by which heat, in the form of electromagnetic radiation, is emitted in all directions.
Duración:
03′ 27″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
385.69 MBytes

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