Question 9 of 17intermediate💡 UnderstandShort Answer5 marks

For each of the following situations, identify the energy transformation that takes place:

(i)

a truck moving uphill

Answer

Kinetic energy to Potential energy

(ii)

unwinding of a watch spring

Answer

Potential energy to Kinetic energy

(iii)

photosynthesis in green leaves

Answer

Radiation energy to Potential energy

(iv)

water flowing from a dam

Answer

Potential energy to Kinetic energy

(v)

burning of a matchstick

Answer

Potential energy to Heat and Radiation energy

(vi)

explosion of a fire cracker

Answer

Potential energy to Kinetic energy, Heat, Sound, and Radiation energy

(vii)

speaking into a microphone

Answer

Sound energy to Electrical energy

(viii)

a glowing electric bulb

Answer

Electrical energy to Radiation and Heat energy

(ix)

a solar panel

Answer

Radiation energy to Electrical energy

Explanation

The answers are derived by applying the definitions and examples of energy transfer provided in the text. The context defines kinetic energy as energy due to motion and potential energy as energy stored due to deformation or relative position. It also explicitly mentions that water in dams converts potential energy to kinetic energy. Other forms of energy transfer mentioned include heat, radiation (Sun's energy), sound waves, and electric circuits, which are used to deduce the transformations for photosynthesis, burning, microphones, bulbs, and solar panels.