| Hint | Answer | % Correct |
|---|---|---|
| Movement energy | kinetic | 92%
|
| Type of energy store: food, fuels, chemicals in batteries | chemical | 73%
|
| Energy due to heating | Thermal | 73%
|
| Energy in an object when stretched or squashed | elastic | 62%
|
| 1/2 x k x e2 | elastic | 62%
|
| Energy | 62%
| |
| Energy of an object due to its position | gravitational | 54%
|
| Renewable sources of electricity: | solar | 54%
|
| wind | 54%
| |
| Energy cannot be _____ or ______ | created destroyed | 51%
|
| The live wire is _____ | brown | 49%
|
| gas to liquid | condensation | 49%
|
| Step-up transformers _____ potential difference to reduce heat lost | increase | 46%
|
| solid to liquid | melting | 46%
|
| ______ radiation is stopped by aluminium | beta | 43%
|
| Useful energy output / total energy input | efficiency | 43%
|
| ______ radiation is stopped by a thick layer of lead | gamma | 43%
|
| Voltmeters are connected in ______ with the component | parallel | 43%
|
| Energy transferred per unit of time | Power | 43%
|
| Energy transferred = | work done | 43%
|
| Force x distance = (J) | work done | 43%
|
| ______ radiation is stopped by paper | alpha | 41%
|
| Smoke alarms use _____ radiation | alpha | 41%
|
| The neutral wire is _____ | blue | 41%
|
| As temperature increases in a wire ______ also increases | resistance | 41%
|
| To find the specific heat capacity of an object you need: | mass | 38%
|
| Components in parallel all receive the ____ potential difference | same | 38%
|
| In a _____ circuit, the same current passes through each component | series | 38%
|
| In a _____ circuit, potential difference is shared between the components | series | 38%
|
| solid to gas | sublimation | 38%
|
| Earth's gravitational field strength (3 s.f.) | 9.81 | 35%
|
| Mass per unit volume | density | 35%
|
| geothermal | 35%
| |
| Current which repeatedly reverses direction | alternating | 32%
|
| liqiud to gas | boiling | 32%
|
| Wires are made of _____ because it is a good conductor | copper | 32%
|
| Atoms of elements with different numbers of neutrons | isotopes | 32%
|
| Particles in a gas move in random directions at varying ______ | speeds | 32%
|
| temperature | 32%
| |
| tidal | 32%
| |
| Alpha particles have _ protons and _ neutrons | 2 | 30%
|
| Fuel taken from a living or recently living organism | biofuel | 30%
|
| biofuel | 30%
| |
| Current = ______ per unit of time | charge | 30%
|
| Plugs are made of _____ because it is a good insulator | plastic | 30%
|
| Time taken for count rate to decrease by half | half-life | 27%
|
| The total resistance of 2 (or more) in parallel is ____ than the resistance of the resistor with the least resistance | less | 27%
|
| Radioactive decay is a _____ event | random | 27%
|
| wave | 27%
| |
| A beta particles is an _____ | electron | 24%
|
| Specific latent heat of _____ between a solid and liquid | fusion | 24%
|
| hydroelectric | 24%
| |
| Energy required to raise the temperature of 1kg of a substance by 274K | specific heat capacity | 24%
|
| Nuclear fuel | Uranium | 24%
|
| low thermal ____ | conductivity | 22%
|
| Pressure is caused by the _____ of impacts of particles on container walls | force | 22%
|
| When the temperature in a thermistor increases, the current through it _____ | increases | 19%
|
| The earth wire is _____ | yellow and green | 19%
|
| Unit for radioactivity | becquerel | 16%
|
| Random motion of particles in a fluid is called ______ motion | Brownian | 16%
|
| Only allows current in one direction | diode | 16%
|
| Particles in a solid are next to each other in _____ positions, and _____ about that position | fixed vibrate | 16%
|
| The live wire reaches ____V in each direction | 230 | 14%
|
| The frequency of mains electricity in the U.K. (Hz) | 50 | 14%
|
| Energy transferred to a substance when it changes state is its _____ _____ | latent heat | 14%
|
| Particles in a gas move ______ | randomly | 14%
|
| ______ fired alpha particles at a thin sheet of gold | Rutherford | 14%
|
| Energy transferred to where it's wanted in the way it's wanted | useful | 14%
|
| The current through an electrical appliance is the _____ that flows through it each _____ | charge second | 11%
|
| Double glazed windows have a _____ to reduce energy transfer | vacuum | 11%
|
| The _____ of a radioactive source is the number of unstable atoms in a source that decay per second | activity | 8%
|
| The neutral wire _____ the circuit | completes | 8%
|
| Unwanted presence of materials containing radioactive atoms on other materials | contamination | 8%
|
| Increased temperature = higher pressure due to more _____ collisions with more _____ | frequent force | 8%
|
| How to reduce energy transfer through an object: shallow temperature ____ | gradient | 8%
|
| kinetic energy + potential energy = | internal | 8%
|
| To reduce friction: | lubricate | 8%
|
| It is emitted when there are too many _____ compared with _____ | neutrons protons | 8%
|
| An electron moving to a lower energy level results in electromagnetic radiation being emitted in the form of a _____ | photon | 8%
|
| Natural gas power stations have the _____ start-up time | shortest | 8%
|
| Specific latent heat of _____ between a liquid and a gas | vaporisation | 8%
|
| When electrons are knocked off of atoms | ionisation | 5%
|
| liquid to solid | solidifying | 5%
|
| To reduce air resistance: | streamline | 5%
|
| _____ material | thick | 5%
|
| Nuclear and coal-fired power stations provide a constant amount of electricity (____ ____) | base load | 3%
|
| Wires and resistors are examples of... | ohmic conductors | 3%
|
| If a ______ ______ is reversed, the substance will recover its original properties | physical change | 3%
|
| How well an object transfers energy | thermal conductivity | 3%
|
| Radioactive decay is a _____ event | chaotic | 0%
|