Machines and structures
In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at structures. We can make many comparisons between the human body and structures. For example, the long metal tower of the crane in the photo is like the skeleton that supports our body. [...]
Esta secuencia contiene:
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10 actividades
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60 recursos
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Idioma:
- Inglés
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Formato:
Interactivo
- Esta secuencia pertenece a un libro:
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Secuencia didáctica
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Didactic objectives Identify the basic characteristics of electrical current, conductors and insulators. Identify the parts of an electrical circuit and draw a diagram with the correct symbols. Understand the importance of receivers. [...]
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1. Electrical current An object becomes electrically charged when it contains an electrical charge. Some objects become electrically charged when we rub one against the other. For example, when you rub a plastic pen against a woollen jumper. [...]
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In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at structures. [...]
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Electrical charge Have you noticed how the hair on your arms stands on end when your arm touches a television screen? Or have you felt a small electric shock after touching the metal body of a car? This happens because these materials are electric...
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Magnets and magnetism Magnets are materials that attract iron. They have a property called magnetism. Natural and artificial magnets Some natural materials have magnetic properties. They are called natural magnets. [...]
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Machines have several connected parts and work manually or with a motor. They save us time and effort. Simple machines Simple machines only have a few parts. The most common examples are the lever, the pulley and the winch. [...]
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What is a tool? A tool is an instrument that we use to make our work easier. We operate tools using our hands. Humans used rocks, bones and sticks to make the first tools. These included axes, hammers and sickles. [...]
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The structure of a construction Constructions like buildings and bridges are influenced by loads and forces. These are push or pull factors created by the weight of the building materials and the way the construction is used. [...]
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In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at structures. [...]
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In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at structures. [...]
Cursos y asignaturas
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11 años:
- Biología
- Sociología
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12 años:
- Biología
- Sociología
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