Light and sound
We perceive most of the things around us because we can see or hear them. Most objects do not have their own light. We see them because they are illuminated by light from natural and artificial sources, and because we have a sense of sight. Light shines on the object, reflects off it, and the image reaches our eyes. Sound comes from the vibrations made by the objects and people around us. We can hear them because of our sense of hearing. [...]
Esta secuencia contiene:
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9 actividades
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61 recursos
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Idioma:
- Inglés
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Formato:
Interactivo
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Secuencia didáctica
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Didactic objectives Identify light as a type of energy. Describe how light is produced. Understand the difference between transparent, translucent and opaque objects. Distinguish between the reflection and refraction of light. [...]
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1. Light Light is a form of energy. Light sources produce light. There are two types of light: natural light sources, like the Sun and artificial light sources, like light bulbs. [...]
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We perceive most of the things around us because we can see or hear them. Most objects do not have their own light. We see them because they are illuminated by light from natural and artificial sources, and because we have a sense of sight. [...]
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What is light? Light is a form of energy. It produces changes in the things that it shines on. For example, light makes it possible for plants to grow. We can convert light into electrical energy using solar panels. [...]
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Objects reflect light When light shines on an object, sometimes it passes through the object and other times it reflects off it. When an object reflects light, we can see it. Mirrors A mirror is a smooth piece of glass. [...]
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What is white light? We see the light from the Sun as white. In reality, it is made up of an infinite number of different colours. We can see this when white light passes through a glass prism or drops of water. [...]
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What is sound? Sound is produced by vibrating objects. We perceive sound because we use our sense of hearing. When an object produces a sound, it travels through the air or other objects (walls, furniture, etc.) until it reaches our ears. [...]
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We perceive most of the things around us because we can see or hear them. Most objects do not have their own light. We see them because they are illuminated by light from natural and artificial sources, and because we have a sense of sight. [...]
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We perceive most of the things around us because we can see or hear them. Most objects do not have their own light. We see them because they are illuminated by light from natural and artificial sources, and because we have a sense of sight. [...]
Cursos y asignaturas
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