Unit 5.2 - Yonis Abdi | Conjunto de Fichas

Pregunta	Respuesta
Unit 5.2 - Energy Efficiency	Image: Guy Falls Off Treadmill O (binary/octet-stream)
Wat is energy efficiency?	The proportion of useful energy output from a device compared to the amount of energy that is input (expressed as a percentage).
What is useful energy?	The amount of energy that is actually used in work.
What is wasteful energy?	The energy that is lost.
What is the initial energy in using a toothbrush?	Electric energy
What is the useful energy produced?	Kinetic energy
What is the wasted energy?	Heat and sound energy.
What is initial energy in playing cricket?	chemical energy
Useful?	Kinetic
Wasted?	Heat and sound
Initial energy when using an iPad?	Chemical energy
Useful?	Sound and light energy
Wasted?	Heat energy
Initial energy when using a torch?	Chemical
Useful?	Light energy
Wasted?	Heated energy
What is energy rating label?	A label showing a number of stars which can be used to compare the energy efficiency of different appliances.
What type of energy is often listed as wasted energy?	Heat energy
What is insulation?	Material placed in ceilings and between the walls of a house to reduce heat transfer.
Banana	Rice

Unit 5.2 - Yonis Abdi

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