Denise Goldman Light Flipped Classroom - Contenido educativo
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Hi everyone. For your next natural science class on Thursday, you need to watch this presentation
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about light. What are we going to learn about in this presentation? We're going to learn what is
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light energy, what are the two types of light sources, and how does light travel? Remember we
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spoke about sound and we said that sound is a type of energy? Well, light is a form of energy as well.
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Light is a form of energy that allows us to see the things around us.
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All light either comes from natural light sources or from artificial light sources.
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What are natural light sources?
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These light sources are found in nature.
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And let's have a look at a few examples.
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Lightning, the sun, a meteor, stars in the sky, a volcano, and even this jellyfish.
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Some animals produce their own light.
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We call these animals bioluminescent animals, and most of them live in the ocean.
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We said that natural light sources are found in nature.
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So, where do artificial light sources come from?
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These light sources are created by people.
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The light energy is transformed from another type of energy, like chemical energy or electrical energy.
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We cannot find these sources of light in nature.
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For example, a candle is an artificial light source, and a flashlight and a lamp as well.
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A computer screen, sparklers, and fireworks are examples of artificial light sources.
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With a computer screen, electrical energy is transformed into light energy.
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With the sparklers and fireworks, chemical energy is transformed into light energy.
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Do you know how light travels?
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First of all, light travels in straight lines.
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When you shine a torch at night, you can see that light travels in a straight path.
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Another way of seeing how light travels is when you go in a car at night.
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When you're in a car at night, you can see that the headlights shine on things in front of the car,
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but they cannot light things up that are on the side of the car.
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light travels extremely fast much much faster than sound it travels at nearly 300 000 kilometers
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per second and we call that the speed of light so i hope that you found today's class interesting
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and just to make sure that you understand make sure that you can answer these questions the
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first question what is light the second question what are the different sources of light and try
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to remember examples of each one and the third question how does light travel ah and by the way
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an extra question for the next class is the moon a natural light source why why not
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- Idioma/s:
- Autor/es:
- Denise Goldman
- Subido por:
- Denise G.
- Licencia:
- Reconocimiento - Compartir igual
- Visualizaciones:
- 4
- Fecha:
- 6 de julio de 2023 - 8:40
- Visibilidad:
- Clave
- Centro:
- CPR INF-PRI-SEC ZURBARÁN
- Duración:
- 03′ 40″
- Relación de aspecto:
- 1.78:1
- Resolución:
- 1920x1080 píxeles
- Tamaño:
- 17.79 MBytes
