The website has the complete lesson note for all the subjects in secondary school but this piece showcases the JSS1 Basic Science Lesson Note on Transformation of Energy. You can use the website search button to filter out the subject of interest to you.
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TOPIC: ENERGY
SUB-TOPIC: TRANSFORMATION OF ENERGY
Energy changes happen daily around us. The law of Conservation of energy states that energy can neither be created nor destroyed but it can change from one form to another. The following are examples of transformation of energy:
- Mechanical Energy à Heat energy e.g. Rubbing two surfaces against each other
- Chemical energy à Light energy e.g. torch light battery.
- Sound Energy à Electrical energy e.g. Microphone, loudspeaker
- Electrical energyà Sound energy e.g. Electrical bell
- Chemical energy à Heat energy e.g. Gas cooker
- Mechanical energy à Sound energy e.g. time keeper ringing the school bell
- Chemical energyà Mechanical energy e.g. moving car
- Radiant energyà Chemical energy e.g. photosynthesis (Plants make food)
- Electrical energy à Thermal energy (heat)
- Electric energy à Mechanical energy e.g. electric motor
Series and Parallel Circuits
A circuit is the path of an electric current. In a series circuit, electric current flows in a single path. If you turn a light switch off, for instance, or if one light bulb along the pathway burns out, a break in the path occurs and the electric current stops flowing to both light bulbs. In a parallel circuit, electric current flows in more than one path. When a break occurs in one path, such as when one of the light bulbs burns out, the other light bulb stays lit because the electric current continues to flow to it.
USES OF ENERGY
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