4 The total amount of energy in the universe is always the same but can be transferred from one energy store to another during an event

Worksheet 9: Energy conversion

Worksheet 9can be used for deepening and extension after different forms of energy and the concept of energy conversion have been developed (e.g. worksheets 5-7).

WORKSHEET Workshop

Teaching aids:

Worksheet

Procedure:

The students work for themselves or together in groups of two. The teacher gives the following instruction: “What belongs to what? Link the boxes that belong together!“

Possible solution:

Car engine	Fuel → explosion → movement
Light bulb	Electricity (electrical energy) → light + heat
Solar collector	Solar radiation (solar energy) → heat (thermal energy)
Photosynthesis	Solar radiation (solar energy) → sugar (chemical energy)
Solar cell	Solar radiation (solar energy) → electricity
Accumulator	Electricity → chemical energy
Fluorescent lamp	Electricity (electrical energy) → light
Kettle	Electricity → heat
Electric motor	Electricity → movement
Battery	Chemical energy → electricity
Firefly	Chemical energy → light
Match	Chemical energy → light + hea
Walking person	Chemical energy → movement
(eletric) Generator	Movement → electricity
Brakes	Movement → heat

The results are discussed with the several groups during the work phase and as summary with the whole class

Additional task:

The pupils are asked: “Do you know any other energy converters? What types of energy do they convert?” The suggestions are collected, discussed and made visible on the blackboard or similar

Theeducational objective of this task is to identify the concept of energy conversion and any forms of energy that have not yet been introduced. In addition, energy forms which don’t the students known yet, can be introduced with understandable and simple terms.The correctness of the solutions should be emphasized, since they contribute to the understanding of the forms of energy.