P3 - Sustainable Energy 0.0 / 5 ? PhysicsSustainable EnergyGCSEOCR Created by: Megs555Created on: 05-12-15 11:20 What is the difference beween a primary energy source and a secondary energy source? Primary energy sources are used in the form that they are found. Secondary energy sources are proudced frm primary sources. 1 of 9 Why will our supply of fossil fuels run out? We are using them quicker than they can be replaced. 2 of 9 How do fossil-fuel power stations contribute to global warming? Burning them produces CO2, which is a greenhouse gas and causes pollution/rise in temperaures. 3 of 9 What damage is caused to the environment when extracting fossil fuels? Oil spills when drilling for it, damage to local areas from coal mining. 4 of 9 What damage is caused to the environment when burning fossil fuels? It produces sulphur dioxide, which contributes to acid rain. 5 of 9 What is the equation for measuring energy transferred? Energy transferred = power X time. 6 of 9 What is the equation for calculating power? Power (W) = voltage (V) X current (A). 7 of 9 What transfers electrical energy in a circuit? A component. 8 of 9 Why does the energy in a circuit eventually spread to the surroundings? The component, wires and cables heat up slightly, emitting heat energy. 9 of 9
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