Energy
The Sun is the Earth's main energy source. The Sun provides plants and animals with light and heat. This means that they can grow, develop and live on Earth. Heat energy has other effects on objects: it increases their temperature and changes their volume. Humans also use other sources of energy, like wind, water, oil and coal. We convert this energy into electrical energy in power stations. [...]
Esta secuencia contiene:
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11 actividades
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81 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 Define what energy is and recognise the main energy sources. Identify the main forms of energy. Describe how energy is converted from one form to another. Explain what renewable and non-renewable energy sources are. [...]
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1. Energy Energy is the power that causes change in things and allows us to carry out work. Energy is produced by energy sources. The main source of energy on Earth is the Sun. [...]
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The Sun is the Earth's main energy source. The Sun provides plants and animals with light and heat. This means that they can grow, develop and live on Earth. [...]
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What is energy? Energy is the power that causes change in things. It also allows us to carry out work: Aeroplanes can fly because of the energy they get from fuel. Their engines burn this fuel. [...]
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Non-renewable sources of energy exist on the Earth in limited amounts. oil, coal, natural gas and uranium are all non-renewable. If we use too much of these energy sources, we will eventually run out of them. Oil Oil is a thick, dark liquid. [...]
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Energy sources that will not run out are called renewable energy sources. Some examples are the Sun, water and wind. The energy that we obtain from renewable sources is called clean energy because it does not cause pollution. [...]
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What is heat? Heat or heat energy passes from hot objects to cold objects. When an object heats up, it absorbs heat; when it cools down, it loses heat. Temperature is not the same as heat. It tells us how much energy an object contains. [...]
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The most common forms of energy The most common forms of energy are electrical and heat energy from fuels. Electrical energy is used in many appliances and machines in homes and factories. [...]
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Energy produces changes Energy produces changes when it acts on objects. For example: Heat energy changes the state of objects. Ice cream will melt at room temperature. [...]
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The Sun is the Earth's main energy source. The Sun provides plants and animals with light and heat. This means that they can grow, develop and live on Earth. [...]
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The Sun is the Earth's main energy source. The Sun provides plants and animals with light and heat. This means that they can grow, develop and live on Earth. [...]
Cursos y asignaturas
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