Question

part a
identify the energy conversions associated with the following appliances.
drag the appropriate labels to their respective targets.
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chemical energy to mechanical energy
electrical energy to mechanical energy
light energy to electrical energy
electrical energy to light energy
wind energy to mechanical energy
fan
car engine
solar panels
glowing of a bulb
windmills

Explanation:

• Fan: It operates on electricity. The electric motor in the fan converts electrical energy into mechanical energy (rotational motion of the blades).
• Car Engine: Runs on fuel (like petrol or diesel which have chemical energy). The engine burns the fuel and converts the chemical energy of the fuel into mechanical energy (to move the car).
• Solar panels: Absorb light (solar energy). They use photovoltaic cells to convert light energy into electrical energy.
• Glowing of a Bulb: Connected to an electrical supply. The filament in the bulb (in case of incandescent) or the gas/LED (in other types) converts electrical energy into light energy (and some heat in incandescent bulbs, but the main conversion is to light).
• Windmills: The blades of the windmill are moved by wind (wind energy). This movement is harnessed to convert wind energy into mechanical energy (which can further be converted to electrical energy in wind - turbines, but the basic conversion here is wind to mechanical).

Answer:

• Fan: Electrical energy to mechanical energy
• Car Engine: Chemical energy to mechanical energy
• Solar panels: Light energy to electrical energy
• Glowing of a Bulb: Electrical energy to light energy
• Windmills: Wind energy to mechanical energy