AQA GCSE Triple Science – Physics Practice Test

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• Which of the following is a disadvantage of hydro-electric power?
• Describe the law of reflection.
• Which energy source is described as having no fuel costs and minimal running costs?
• Give two renewable energy resources and two non-renewable energy resources.
• What happens to the atomic number and mass number in alpha decay?
• In a perfectly insulated system, what happens to the total energy as energy is transferred and stored?
• What is half-life?
• Why is alternating current used for long-distance power transmission?
• Which statement about standard candles is true?
• Which is a longitudinal wave?
• Which of the following is NOT an advantage of hydro-electric power?
• Suggest one practical way to reduce energy losses in a house.
• How does a transformer change AC voltage?
• What is latent heat?
• Which of the following is a disadvantage of tidal barrages?
• In solar heating, what happens to the heated water?
• How do transformers work?
• Which wall feature reduces conduction through walls by introducing an air gap?
• In an electromagnet, which change increases the magnetic field strength inside the core?
• Which method helps reduce energy waste in a home appliance?
• What is the formula for gravitational potential energy near Earth's surface?
• What is energy measured in?
• Which equation describes latent heat energy for a state change?
• Which shielding is most effective for gamma radiation?
• Which energy resource is used by steam trains to boil water and produce steam?
• How does shielding differ for alpha, beta, gamma?
• What happens to light when it passes from air into a denser medium (higher refractive index) at an angle?
• State Ohm's law and name the symbols.
• How can the magnetic field around a magnet be mapped using a compass?
• From the following, which statement about the national grid is true?
• What is the wave equation relating speed, frequency and wavelength?
• If the distance from a planet to the Sun in a circular orbit decreases, what happens to its orbital speed?
• Which statement best describes the conservation of energy?
• Which energy resource is used by vehicles that run on petrol and diesel?
• What does 'work done' mean?
• Define average speed.
• Which of the following is a correct formula for efficiency?
• What happens to the speed of light when it enters a medium with a higher refractive index at an angle?
• What is the function of transformers in the national grid?
• What are bio-fuels made from?
• A 2 kg block on a frictionless surface is raised to height h = 3 m. What is the kinetic energy at the bottom? Use g = 9.8 m/s^2.
• Which are the three main fossil fuels?
• In a series circuit, resistors are 3 Ω and 6 Ω. What is the total resistance?
• What is the mass number of an alpha particle emitted in alpha decay?
• Which pair correctly matches an energy store with a valid example?
• Which statement describes how natural gas is used for heating?
• Bio-fuels are made from which materials?
• Which pollutant causes acid rain?
• What is the role of the iron core in a transformer?
• What is the equation for kinetic energy?
• A device delivers 520 J of useful energy from 1000 J input. What is its efficiency?
• How does convection happen?
• Which of the following is an advantage of bio-fuels?
• Which of the following is NOT a standard energy store?
• Which energy store is associated with the temperature and microscopic motion of particles in a substance?
• A heater has an electrical input of 1000 J and produces 320 J of useful heat. What is its efficiency and how much energy is wasted?
• A 2 kW heater runs for 25 minutes. How much energy is transferred?
• How can you determine the density of an irregular solid?
• Which are the four ways energy is transferred?
• What is power measured in?
• What is the purpose of the soft iron core in transformers?
• What happens to an object's gravitational potential energy store and kinetic energy when it falls?
• Which of the following is an advantage of wind turbines?
• What is the primary effect of lubricants on moving surfaces?
• How does ultrasound imaging create an image?
• An ideal transformer has primary turns 120 and secondary turns 60 with input 240 V. What is the output voltage and current if the input current is 0.5 A?
• Outside a permanent magnet, magnetic field lines go from which pole to which?
• Which energy source is described as reliable in meeting electricity demand?
• Which statement best describes convection?
• Calculate the wavelength of a wave with frequency 150 MHz traveling at 3 × 10^8 m/s.
• Differentiate between specific heat capacity and heat capacity; give their units and relation.
• How is electricity induced in a generator?
• Describe diffusion and give an everyday example.
• What happens to the temperature of a solid when heat is added up to its melting point?
• During a fall, what happens to energy as the skydiver accelerates?
• Which expression correctly defines density?
• What is power?
• A circuit has a 12 V supply and a 6 Ω resistor. What is the current?
• What is the purpose of a Sankey diagram?
• Which scenario represents gravitational potential energy?
• What is the primary purpose of an iron core in a transformer?
• Which statement about conduction is true?
• What is a magnetic field line?
• Which of the following is a disadvantage of wind turbines?
• Which statement best describes the national grid?
• A device operates at 230 V and 60 W. What current does it draw?
• What is the unit for specific heat capacity?
• What is the conservation of energy principle?
• Which statement best describes the principle of conservation of energy as it applies to a falling object?
• What causes day and night and the seasons?
• If an irregular solid has mass 0.5 kg and displaces 250 cm³ of water, what is its density?
• What is electromagnetic induction?
• What happens to light when it enters a slower medium in terms of refraction?
• What is evaporation and boiling difference?
• What happens to the path of a light ray when it enters a different medium at an angle?
• Which of the following is a renewable energy resource?
• Which statement correctly defines the half-life concept?
• Which of the following is an advantage of solar cells?
• Which device is used to heat buildings using geothermal energy?
• If a 3 Ω resistor has a current of 2 A, what is the voltage across it?
• If useful output power is 60 W and input power is 75 W, what is the efficiency?
• Define density and give its formula.
• Nuclear power carries the risk of what?
• Why does a step-down transformer reduce voltage?
• Density calculation: mass 3.0 kg and volume 0.6 m^3.
• Suggest a simple experiment to map the magnetic field around a magnet using a compass.
• What is the approximate gravitational field strength near the Earth's surface?
• Explain the motor effect and how a current-carrying loop can rotate in a magnetic field.
• Which of the following is an advantage of tidal barrages?
• A kettle rated at 4 kW operates for 10 minutes. How much energy is transferred?
• How can you increase the strength of an electromagnet?
• Why are transformers used to raise voltage before transmission?
• How does conduction happen?
• What is the definition of half-life for a radioactive substance?
• How does friction affect stopping distance?
• Explain what happens to a gas when heated at constant pressure.
• In what states does convection occur?
• How does sonar measure distance to an object?
• Name two uses of infrared radiation.
• In a parallel circuit, which statement about current and potential difference is true?
• If a transformer has primary 100 turns and secondary 200 turns connected to 240 V input, what is the output voltage?
• Which renewable energy resource uses flowing water to generate electricity?
• Which energy store is stored due to the motion of an object?
• Distinguish thinking distance and braking distance.
• How much energy is required to melt 0.25 kg of ice at 0°C if the latent heat of fusion is 334 kJ/kg?
• Why are fuses rated in amperes and what happens if the current exceeds this rating?
• In alpha decay, what happens to the nucleus?
• What happens to the total resistance when you add another resistor in series?
• When do wind turbines stop?
• Which action directly reduces friction between moving parts to improve energy transfer efficiency?
• In a series circuit, which statement about current and potential difference is true?
• Which statement describes the environmental impact of carbon dioxide released from burning fossil fuels?
• What is an isotope?
• What is the approximate speed of light in air compared to water?
• What are tidal barrages?
• Which EM waves have the longest wavelength and a common use?
• What is a light year?
• Which equation expresses the relationship between speed, frequency and wavelength?
• Which statement describes gamma radiation?
• Which of the following is a disadvantage of wave power?
• What is one watt?
• Name the three wires in a mains plug and briefly state their functions.
• Which statement about gamma radiation, second description, is correct?
• Which energy store is stored in a stretched or compressed spring?
• Which statement explains why warm regions rise during convection?
• Where are the strongest magnetic field lines around a bar magnet found?
• Which energy resource is used by vehicles that run on biofuels, or biofuels and petrol/diesel?
• What is the range of audible frequencies for humans?
• What is the approximate distance, in meters, that a light year represents?
• Which statement about gamma radiation is correct?
• What happens to light when it passes from air into water?
• What is the function of the Earth wire and what color is it in the UK?
• Why does temperature stay constant during melting?
• In an atom, what balances the positive charge of the nucleus?
• State Ohm's law and identify the quantities V, I and R.
• Hooke's law for springs relates force to extension with which formula?
• Calculate the total resistance for two resistors, 8 Ω and 4 Ω, in series and in parallel.
• In a series circuit, how does the current through each component behave?
• In a transformer, what happens if you increase the number of turns on the primary?
• Which statement about wind turbines and demand is true?
• If mass is doubled and velocity doubled, momentum becomes?
• Calculate the density of a substance with mass 2.4 kg and volume 0.4 m^3.
• What is the problem with using a high current to transmit lots of power?
• Where is geothermal power possible?
• Which statement best describes a transverse wave?
• In a parallel circuit, how does the voltage across each branch relate to the supply voltage?
• For a given power, what does increasing the potential difference do?
• Around doors and windows, which item helps reduce energy transfers by convection?
• A car with mass 1000 kg accelerates from rest to 20 m/s. What is its kinetic energy?
• Which of the following describes a property of alpha radiation?
• How does a simple electrical generator work?
• Which statement is true about solar cells in sunny countries?
• Why is AC preferred for power transmission?
• What is the purpose of double insulation in electrical appliances?
• In a parallel circuit with resistors 6 Ω and 3 Ω connected to the same supply, which branch draws more current?
• During a tidal barrage operation, what happens when the tide comes in?
• Which statement about geothermal power is true?
• State momentum and its equation.
• A car with mass 1200 kg travels at 15 m/s. What is its momentum?
• Which two methods are used to estimate stellar distances?
• Why are fuses used in household circuits?
• What is the equation for gravitational potential energy?
• Which statement is true about wind turbines' running costs?
• What does redshift tell us about distant galaxies?
• What are the units of specific heat capacity?
• What is the difference between transverse and longitudinal waves? Give an example of each.
• What is conduction?
• Which energy store is associated with energy stored due to position in a gravitational field?
• What is the equation for orbital speed in a circular orbit around a mass M at distance r?
• Which quantity is defined as energy required to raise the temperature of the entire object by 1°C?
• In beta minus decay, which particle is emitted that carries away a negative charge?
• Which statement about parallax is true?
• Which statement describes a disadvantage of fossil fuels?
• Which loft insulation material is commonly used because it contains pockets of trapped air?
• In a closed system, how does energy behave during a skydiver's fall?
• Where are solar cells most often used?
• What is the purpose of double glazed windows?
• Which energy store is a stretched spring an example of?
• In an ideal transformer, what is the relation of power input to power output, ignoring losses?
• Which statement correctly defines ionising radiation?
• Calculate the density of a gas with mass 0.75 kg in a volume of 0.3 m^3.
• A 60 W lamp is left on for 3 hours. How much energy is transferred in joules?
• Which statement about nuclear energy is true?
• Which statement about alpha radiation's range in air is true?
• What is convection?
• What determines the amount of bending of light at a boundary between media?
• If an object is raised to a higher height, what happens to its potential energy?
• If wavelength doubles while speed remains constant, what happens to frequency?
• Describe the basic structure of an atom.
• A mass of 5 kg is raised by 4 m. What is the gravitational potential energy (GPE) using g = 9.8 m/s^2?
• In beta minus decay, what changes and what is emitted?
• What is the power if energy transferred is 200 J in 4 s?
• In energy transfer, what equation relates input energy, useful energy, and wasted energy?
• Which statement correctly describes specific heat capacity?
• Which of the following is a disadvantage of bio-fuels?
• What happens to the temperature during a change of state when energy is added?
• A circuit has a 2 A current through a 4 Ω resistor; what is the voltage across it?
• What are the two equations for calculating power?
• Which of the following is an advantage of wave power?
• Isotopes differ in what property?
• Why is higher potential difference used for power transmission?
• Describe the transfer of energy in a closed system with a cold spoon and hot soup, assuming the flask is a perfect thermal insulator.
• What is an isotope?
• What is a closed system?
• What is specific latent heat? State the energy change formula.
• On average, what percentage of the time do wind turbines produce electricity?
• Which statement is a disadvantage of renewable energy resources?
• Which of the following is a disadvantage of geothermal power?
• Which statement describes how coal is used for heating?
• Which of the following is NOT an advantage of geothermal power?
• How is a planet held in orbit around the Sun?
• After one half-life, a sample's activity decreases to what value?
• Power is measured in which unit?
• In a plane mirror, what is true about the angle of incidence and the angle of reflection?
• What is a transformer?
• A resistor with I = 2 A and R = 3 Ω has what power?
• What is specific heat capacity?
• Which formula gives kinetic energy?
• Which of the following is a disadvantage of solar cells?
• Which of the following is an environmental problem caused by non-renewable resources?