Physics 0.0 / 5 ? PhysicsPhysics paper oneGCSEAQA Created by: em3frCreated on: 20-03-19 14:51 Give one way a home can be energy efficient Loft insulation as it prevents heat loss 1 of 31 What is specific heat capacity? The amount of energy a substance can store 2 of 31 What is the equation for specific heat capacity Energy required = mass x heat capacity x change in temp 3 of 31 What can you use specific heat capacity for? To work out the amount of energy needed to heat something 4 of 31 Give one way your body controls it’s heat transfer? When it’s hot, blood flows closer to the skin, and when it’s cold it flows further away 5 of 31 How does condensation work? When a gas cools, the particles have less kinetic energy and forces pull them together making a liquid 6 of 31 What makes a good conductor? Solids, dense materials, free electrons, and large gaps between particles 7 of 31 What is a convection? When energetic particles move from a hot region to cold region 8 of 31 ?What is the law of conservation? Energy can not be created or stored, only transferred 9 of 31 What is Evaporation? high temperatures cause kinetic energy to overcome the attraction between particles and separate, becoming a gas from a liquid 10 of 31 How do you calculate wave wave speed? Wave length x frequency 11 of 31 Describe a transverse wave Vibrations perpendicular to their energy flow 12 of 31 Describe longitudinal waves Vibrations parallel to their energy flow 13 of 31 Give a negative impact of nuclear power It’s very dangerous 14 of 31 Give an advantage of nuclear power No contributions to global warming 15 of 31 Why do refraction rats change direction? Because they had a change in speed 16 of 31 What does the angle of incidence equal? The angle of reflection 17 of 31 What if diffraction Waves spread out to pass around a subject 18 of 31 In the electromagnetic spectrum, when frequency increases.. energy... Increases 19 of 31 As frequency increases, wavelength... Decreases 20 of 31 Give a disadvantage of using Fossil Fuels It released greenhouse gases which contribute to global warming 21 of 31 Give an advantage of using Fossil Fuels It creates a lot of energy 22 of 31 Give an advantage of wind power Doesn’t produce any harmful gases 23 of 31 Give a disadvantage of wind power Noise pollution 24 of 31 Give an advantage of solar power Doesn’t produce any pollutants 25 of 31 Give a disadvantage of solar power Have to have sunlight 26 of 31 Give an advantage of using hydroelectric power No fuel costs 27 of 31 Give a disadvantage of using hydroelectric power Caused vegetation to rot which releases methane 28 of 31 Why is the voltage stepped up in the national grid? To reduce power loss 29 of 31 Why is the voltage in the national grid stepped down? Makes it safe to use 30 of 31 What is the Doppler effect? Wave source moving towards observer had a higher frequency and vise versa 31 of 31
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