Which series of energy transformations takes place in the circuit when the siren turns on? A: Chemical energy > Sound energy > Electrical energy B: Sound energy > Electrical energy > Chemical energy C: Chemical energy > Electrical energy > Sound energy D: Electrical energy > Chemical energy > Sound energy

The correct option is C ( Chemical energy > Electrical energy > Sound energy)

Explanation:

Energy is defined as the capability or ability to perform work. It is measured in joules. It is a scalar quantity ( that is, fully described by its magnitude).

The principle of conservation of energy states that in a closed system, energy can neither be created nor destroyed during transformation. Although energy can be transformed so that the total energy of a given system always remains constant. The different forms of energy includes:

--> mechanical energy

--> Chemical energy

--> Heat energy

--> sound energy

--> electrical energy

--> sound energy

To be able to create a circuit that will produce siren sounds, a source of power supply will be needed. This would be derived from a battery cell( Chemical energy). This supplies current (electrical energy)to the sound system of the circuit to produce the siren sounds heard(sound energy). Therefore the energy transformation is from CHEMICAL ENERGY to ELECTRICAL ENERGY to SOUND ENERGY.

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

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explanation: