4. Give two examples of energy Conversions involving;
a. Potential Energy to Kinetic Energy.
b. Electrical Energy to Sound Energy.
Answers
Answer:
Energy conversion also termed as the energy transformation, is the process of changing one form of energy into another. Energy conversion occurs everywhere and every minute of the day. There are numerous forms of energy like thermal energy, electrical energy, nuclear energy, electromagnetic energy, mechanical energy, chemical energy, sound energy etc. On the other hand, the term Energy Transformation is used when energy changes forms from one form to another. Whether the energy is transferred or transformed, the total amount of energy doesn’t change and this is known as the Law of Conservation of Energy.
The Law of Energy Conversion

The diagram shows how different forms of energy can be converted to another form of energy
Thermodynamics is the study of how energy gets converted from one form to another. Details on how the laws of thermodynamics apply to the conversion of energy are given below.
The first law of thermodynamics states that
Energy can neither be created nor destroyed, it can only be transformed from one form to another.
This is also known as the law of conservation of energy or the law of energy conversion. There are various types and forms of energy. Some examples of everyday energy conversions are provided below.
ScenarioEnergy conversions involvedRubbing both hands together for warmthKinetic Energy to Thermal EnergyA falling object speeding upGravitational Potential Energy to Kinetic EnergyUsing battery-powered torchlightIn the battery: Chemical to Electrical Energy
In the bulb: Electrical to Radiant EnergyIn Geothermal Power PlantHeat Energy to Electrical EnergyIn ThermocoupleHeat Energy to Electrical EnergyIn Hydroelectric DamsGravitational potential energy to Electric EnergyIn Electric GeneratorKinetic energy / Mechanical work to Electric EnergyIn WindmillsWind Energy to Mechanical Energy or Electric EnergyIn OTECHeat Energy to Electric Energy or Mechanical EnergyUsing MicrophoneSound Energy to Electric EnergyPhotosynthesis in PlantsSolar Energy to Chemical EnergyIn PiezoelectricsStrain to Electric EnergyIn Electric lampElectric Energy to Heat and Light EnergyBurning of woodChemical energy to Heat and Light EnergyIn Fuel cellsChemical Energy to Electric EnergyIn steam engineThe heat energy to Mechanical EnergyIn Electric heaterElectric Energy to Heat
Examples of Energy Conversion
Some examples of sets of energy conversion in machines are explained below.
Coal-fired Power Plant

Answer:
a. a arow when it is stretched is it's potential energy and a arow when it is released it converts pe into ke
b. the school alarm is best example for conversion of electrical energy to sound energy
Explanation:
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