Energy

Back to: Basic Technology Primary 5

ENERGY

Energy is the ability to perform work. Science has explained to us that energy can neither be created nor destroyed. But can be converted from one form to another or body to another.

Energy helps fuel our body’s internal functions, repair, build and maintain cells and body tissues. Also, it supports the external activities that enable you to interact with physical world. Water, your body’s most important nutrient, helps facilitate the chemical reactions that produce energy from food we all eat. We can now see various ways energy has or can help us when gotten.

Uses of energy

1. The body uses energy to eat, digest and metabolized food
2. Energy is also needed to exist in a state of a complete rest
3. It helps repair the internal functions of the body organs

Sources of Energy

There are various sources of energy which has been discussed in previous classes. They are;

1. Solar energy: This is the energy gotten from the sun
2. Wind energy: This is the energy gotten from wind or earth
3. Biomass energy: This is the energy gotten from organic materials

Types of energy

There various types of energy?

1. Chemical energy: This is energy stored within the bonds between molecules. Sources will include coal and batteries, gasoline, natural gas and many more.
2. Electrical energy: This is energy stored and gotten from electricity
3. Mechanical energy: This energy can be divided in to kinetic and potential energy

These are the types of energy which can formed into various uses.

EVALUATION

1. What is energy?
2. List and explain two types of energy
3. What are the sources of energy?

 

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