1
Q
What is energy efficiency ?
A
Energy efficiency is the percentage of the energy consumed by a machine that was transformed into useful energy. ( in other words the % of useful energy)
2
Q
How do u calculate energy efficiency? ( show the formulae )
A
Energy efficiency = useful energy/ energy consumed ( then multiplied by 100)
Mid-Term Science Exam
flashcards
Decks in class (24)
# Cards
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Atoms: Electrons,Neutrons,Protons11
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Rutherford-Bohr /Lewis Model2
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Periodic Table11
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Chemical Groups/Families9
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Ions6
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Electrolytes And Electrolytic Dissociation6
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Acids, Bases, Salts12
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Neutralization Reactions1
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Concentration7
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Oxidation, Photosynthesis, Cellular Respiration Reactions5
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Balancing Equations3
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Law Of Conservation Of Mass1
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Carbon Cycle13
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Global Warming, Climate Change, GHG,GHE6
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Forms Of Energy10
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Energy Efficiency2
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Permafrost4
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Energy Resources, Disadvantages And Advantages15
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Combustion & The Fire Triangle3
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Thermohaline Circulation12
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Hydroelectric Energy4
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Wind, Solar & Tidal Energy: Advantages And Disadvantages15
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Pack Ice, Glaciers & Global Warming5
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Watersheds/ Catchment Areas/ Drainage Basins3
