Aqa Gcse Physics - Paper 1 Questions And Answers 100% Verified A+ Guaranteed

SHC formula {Ans: E=mcθ Change in thermal energy(J) = mass(kg) x SHC(J/kg/°C) x temperature change(°C)}UK Mains Supply Voltage {Ans: 230V}A sealed container of a gas is kept at a constant volume. The gas is heated. What happens to the pressure of the gas? Explain why. {Ans: The pressure of the gas will increase because the increase in temperature causes the particles to move around quicker thus more collisions will occur. Pressure and temperature are directly proportional}Where does background radiation come from? {Ans: -Radioactivity of naturally occurring isotopes: the air; in food; in building materials and in rocks -Radiation from space - cosmic rays, which come from the sun - the Earth's atmosphere protects us from most of this -Radiation due to human activity e.g. fallout from nuclear explosions or nuclear waste}What is the Specific Latent Heat of Vaporisation? {Ans: The specific latent heat for changing between a liquid & a gas}Why does the pressure in a gas increase as the volume decreases? {Ans: 1) Reducing the volume will reduce the space the particles have to move around in 2) More frequent collisions of gas particles with the container walls 3) Each particle that collides