Question 4 — For each of the following - Questions at the end of the chapter - Chapter 7 - Work, Energy, and Simple Machines (Exploration)

Last updated at June 30, 2026 by

For each of the following situations, identify the energy transformation that takes place: (i) a truck moving uphill, (ii) unwinding of a watch spring, (iii) photosynthesis in green leaves, (iv) water flowing from a dam, (v) burning of a matchstick, (vi) explosion of a fire cracker, (vii) speaking into a microphone, (viii) a glowing electric bulb, and (ix) a solar panel.

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(i) Chemical (fuel) → kinetic + gravitational potential energy.

(ii) Elastic potential → kinetic (mechanical) energy.

(iii) Light (solar) → chemical energy.

(iv) Gravitational potential → kinetic energy.

(v) Chemical → heat + light energy.

(vi) Chemical → heat + light + sound + kinetic energy.

(vii) Sound → electrical energy.

(viii) Electrical → light + heat energy.

(ix) Light (solar) → electrical energy.

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