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1. Flashlight: Electrical energy to light energy
2. Speaking into a telephone: Electrical energy to sound energy
3. Solar panel: Solar energy to electrical energy
4. Campfire: Chemical energy (wood) to thermal energy (heat) and light energy
5. Nuclear power plant: Nuclear energy to electrical energy
[tex]\sf\purple{×××××××××××××××××××××××××××}[/tex]
[tex]\underline{\underline{\large{\green{\cal{✒GIVEN:}}}}}[/tex]
[tex]\underline{\underline{\large{\green{\cal{REQUIRED:}}}}}[/tex]
Let's identify the energy transformation of each.
[tex]\underline{\underline{\large{\green{\cal{EXPLANATION:}}}}}[/tex]
A flashlight uses batteries. Energy that is stored in the form of chemicals in batteries gets converted into electrical energy.
Therefore, the energy transformation here is:
Chemical energy is converted into electrical energy.
[tex]\tt{\purple{Chemical \: energy \longrightarrow electrical \: energy.}}[/tex]
This is because when you speak into a telephone, it is just sound energy that gets converted to sound energy, in the sense that when one is speaking into the telephone, he transmits the sound in an electrical manner to the other person so that he may hear the sound.
Therefore, the energy transformation is:
[tex]\tt{\purple{Sound \: energy \longrightarrow electrical \: energy \longrightarrow sound \: energy.}}[/tex]
A solar panel converts or absorbs sunlight into electrical energy as a power source, which is in the form of solar energy.
[tex]\tt{\purple{Solar \: or \: Light \: energy \longrightarrow Electrical \: energy.}}[/tex]
An example is the burning of wood to make a campfire. In this process, chemical energy from the wood is transformed into thermal energy.
Therefore, the transformation is:
[tex]\tt{\purple{Chemical \: energy \longrightarrow Thermal \: energy.}}[/tex]
In a nuclear power plant, the nuclear power is first converted into thermal power, which is in turn converted into mechanical power. This is true because thermal energy is used to make that turbine, and then this turbine produces electricity.
The transformation here is:
[tex]\small{\tt{\purple{Nuclear \: energy \longrightarrow Thermal \: Energy \longrightarrow Mechanical \: Energy \longrightarrow Electrical \: Energy.}}}[/tex]