Energy

Energy
Biological need to come through the line of various life processes. Aboitic such as household appliances, vehicles, also need energy to be able to operate.

Energy Source
there is nine energy sources: the sun, the food, wave, biomass, atomic energy, batteries, water, fossil fuels and wind.

the energy source is divided into two category and that is renewable energy and non-renewable energy. Sun, food, waves, biomass and water wind are renewable energy; atomic energy, batteries and chemical fuels are non-renewable energy.

The sun is the Earth's main energy source.












Food can complement people's energy.


Waves provide energy during the high tides and low tides.













Biomass refers to organic waste that can be acquired and animal feces.












Atomic energy refers to the energy released during nuclear fission.













Battery provides energy by chemical action.













The flow of water provides energy.


Fossil fuels refers to chemical fuels coal, oil and natural gas.












Wind is formed by the flow of air.












Type of energy
Energy can exist in various forms in our surroundings. The sun provides solar energy, which is one form of energy.

The sun is also a source of light and heat. Light and heat are two other forms of energy. Luminous objects have energy, with the energy we can see the objects around us.


Heat make us feel warm, and also give us the opportunity can cook food.



We eat foods containing chemical energy. Chemical energy is stored in the battery and also in a variety of fuels.


We use electric everyday to operate diffrent things.


There is potential energy in object that is high. Potential energy also exists in ruler that is bent, rubber band that is stretched or compressed spring.


There is sound energy in any sound, sound energy refers to when something have vibration.


Atomic energy is widely used in a form of industrial, military and other aspects.


Everything has kinetic energy in it. the faster we move, the greater the kinetic energy is.


Challenge yourself
1. Write three renewable energy types.
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2. Write three non-renewable energy types.
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3. What is potential energy?
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4. What type of energy does food contain?
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5. What is the importance of light energy?
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6.What does heat energy provide us?
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7. What are fossil fuels?
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