stuart2019-06-28T10:15:21+00:008.14 describe evidence that supports the Big Bang theory (red-shift and cosmic microwave background (CMB) radiation)
stuart2022-11-29T15:19:50+00:006.06 practical: investigate the magnetic field pattern for a permanent bar magnet and between two bar magnets
stuart2019-06-27T08:20:52+00:004.09 practical: investigate thermal energy transfer by conduction, convection and radiation
stuart2019-06-28T09:16:03+00:003.19 practical: investigate the refractive index of glass, using a glass block
stuart2019-06-28T09:15:46+00:003.18 know and use the relationship between refractive index, angle of incidence and angle of refraction
stuart2022-11-29T15:00:26+00:003.17 practical: investigate the refraction of light, using rectangular blocks, semi-circular blocks and triangular prisms
stuart2019-06-27T07:50:09+00:002.23 practical: investigate how insulating materials can be charged by friction
stuart2019-06-28T09:08:02+00:001.22 practical investigate how extension varies with applied force for helical springs, metal wires and rubber bands
stuart2019-06-28T10:17:58+00:008.18 explain why the red-shift of galaxies provides evidence for the expansion of the universe
stuart2019-06-28T10:16:50+00:008.16 use the equation relating change in wavelength, wavelength, velocity of a galaxy and the speed of light:
stuart2019-06-28T10:15:53+00:008.15 describe that if a wave source is moving relative to an observer there will be a change in the observed frequency and wavelength
stuart2019-06-28T10:14:50+00:008.13 describe the past evolution of the universe and the main arguments in favour of the Big Bang
stuart2019-06-28T10:14:24+00:008.12 draw the main components of the Hertzsprung–Russell diagram (HR diagram)
stuart2019-06-28T10:13:43+00:008.11 understand how the brightness of a star at a standard distance can be represented using absolute magnitude
stuart2019-06-28T10:37:45+00:008.09 describe the evolution of stars of similar mass to the Sun through the following stages: nebula, star (main sequence) , red giant, white dwarf
stuart2019-06-28T10:36:32+00:008.06 use the relationship between orbital speed, orbital radius and time period:
stuart2019-06-28T10:36:11+00:008.05 describe the differences in the orbits of comets, moons and planets
stuart2019-06-28T10:34:02+00:008.04 explain that gravitational force: causes moons to orbit planets, causes the planets to orbit the Sun, causes artificial satellites to orbit the Earth, causes comets to orbit the Sun
stuart2019-06-28T10:33:35+00:008.03 understand why gravitational field strength, g, varies and know that it is different on other planets and the Moon from that on the Earth
stuart2019-06-28T10:26:08+00:008.02 know that: the universe is a large collection of billions of galaxies, a galaxy is a large collection of billions of stars, our solar system is in the Milky Way galaxy
stuart2022-11-29T15:48:25+00:008.01 use the following units: kilogram (kg), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s), newton/kilogram (N/kg)
stuart2019-06-28T10:17:24+00:008.17 describe the red-shift in light received from galaxies at different distances away from the Earth
stuart2019-06-28T09:35:10+00:007.26 explain why nuclear fusion does not happen at low temperatures and pressures, due to electrostatic repulsion of protons
stuart2019-06-28T09:32:18+00:007.24 describe nuclear fusion as the creation of larger nuclei resulting in a loss of mass from smaller nuclei, accompanied by a release of energy
stuart2019-06-28T09:31:49+00:007.23 explain the difference between nuclear fusion and nuclear fission
stuart2019-06-28T09:30:07+00:007.21 describe the role played by the control rods and moderator in the fission process
stuart2019-06-28T09:29:30+00:007.20 describe how a chain reaction can be set up if the neutrons produced by one fission strike other U-235 nuclei
stuart2022-11-29T15:43:54+00:007.19 know that the fission of U-235 produces two radioactive daughter nuclei and a small number of neutrons
stuart2022-11-29T15:43:41+00:007.18 understand how a nucleus of U-235 can be split (the process of fission) by collision with a neutron, and that this process releases energy as kinetic energy of the fission products
stuart2022-11-29T15:43:29+00:007.17 know that nuclear reactions, including fission, fusion and radioactive decay, can be a source of energy
stuart2022-11-29T15:43:06+00:007.16 describe the dangers of ionising radiations, including: that radiation can cause mutations in living organisms, that radiation can damage cells and tissue, the problems arising from the disposal of radioactive waste and how the associated risks can be reduced.
stuart2019-06-28T08:14:23+00:007.13 use the concept of the half-life to carry out simple calculations on activity, including graphical methods
stuart2022-11-29T15:42:34+00:007.12 know the definition of the term half-life and understand that it is different for different radioactive isotopes
stuart2019-06-28T08:13:38+00:007.11 know that the activity of a radioactive source decreases over a period of time and is measured in becquerels
stuart2022-11-29T15:42:15+00:007.10 explain the sources of background (ionising) radiation from Earth and space
stuart2019-06-28T08:12:47+00:007.09 know that photographic film or a Geiger−Müller detector can detect ionising radiations
stuart2019-06-28T08:12:23+00:007.08 understand how to balance nuclear equations in terms of mass and charge
stuart2019-06-28T08:11:55+00:007.07 describe the effects on the atomic and mass numbers of a nucleus of the emission of each of the four main types of radiation (alpha, beta, gamma and neutron radiation)
stuart2022-11-29T15:41:48+00:007.06 practical: investigate the penetration powers of different types of radiation using either radioactive sources or simulations
stuart2022-11-29T15:41:27+00:007.05 describe the nature of alpha (α) particles, beta (β−) particles, and gamma (γ) rays, and recall that they may be distinguished in terms of penetrating power and ability to ionise
stuart2022-11-29T15:41:02+00:007.04 know that alpha (α) particles, beta (β−) particles, and gamma (γ) rays are ionising radiations emitted from unstable nuclei in a random process
stuart2022-11-29T15:24:58+00:007.03 know the terms atomic (proton) number, mass (nucleon) number and isotope
stuart2022-11-29T15:24:49+00:007.02 describe the structure of an atom in terms of protons, neutrons and electrons and use symbols such as 146C to describe particular nuclei
stuart2022-11-29T15:23:30+00:007.01 use the following units: becquerel (Bq), centimetre (cm), hour (h), minute (min) and second (s)
stuart2019-06-28T10:58:44+00:006.16 describe the generation of electricity by the rotation of a magnet within a coil of wire and of a coil of wire within a magnetic field, and describe the factors that affect the size of the induced voltage
stuart2019-06-28T10:58:17+00:006.15 know that a voltage is induced in a conductor or a coil when it moves through a magnetic field or when a magnetic field changes through it and describe the factors that affect the size of the induced voltage
stuart2022-11-29T15:23:13+00:006.14 describe how the force on a current-carrying conductor in a magnetic field changes with the magnitude and direction of the field and current
stuart2022-11-29T15:22:32+00:006.13 use the left-hand rule to predict the direction of the resulting force when a wire carries a current perpendicular to a magnetic field
stuart2022-11-29T15:22:21+00:006.12 understand why a force is exerted on a current-carrying wire in a magnetic field, and how this effect is applied in simple d.c. electric motors and loudspeakers
stuart2022-11-29T15:21:48+00:006.08 know that an electric current in a conductor produces a magnetic field around it
stuart2022-11-29T15:20:00+00:006.07 describe how to use two permanent magnets to produce a uniform magnetic field pattern
stuart2019-06-28T10:45:46+00:006.05 know that magnetism is induced in some materials when they are placed in a magnetic field
stuart2019-06-28T10:53:46+00:006.02 know that magnets repel and attract other magnets and attract magnetic substances
stuart2019-06-28T08:04:40+00:005.22 use the relationship between the pressure and volume of a fixed mass of gas at constant temperature:
stuart2019-06-28T08:04:16+00:005.21 use the relationship between the pressure and Kelvin temperature of a fixed mass of gas at constant volume:
stuart2022-11-29T15:17:53+00:005.20 Explain, for a fixed amount of gas, the qualitative relationship between: pressure and volume at constant temperature, pressure and Kelvin temperature at constant volume.
stuart2022-11-29T15:17:15+00:005.19 know that the Kelvin temperature of a gas is proportional to the average kinetic energy of its molecules
stuart2022-11-29T15:16:56+00:005.18 understand why an increase in temperature results in an increase in the average speed of gas molecules
stuart2022-11-29T15:16:24+00:005.17 describe the Kelvin scale of temperature and be able to convert between the Kelvin and Celsius scales
stuart2022-11-29T15:16:08+00:005.16 understand why there is an absolute zero of temperature which is –273 °C
stuart2022-11-29T15:15:53+00:005.15 explain how molecules in a gas have random motion and that they exert a force and hence a pressure on the walls of a container
stuart2019-06-27T11:21:33+00:005.07 know and use the relationship for pressure difference: p = h × ρ × g
stuart2022-11-29T15:15:14+00:005.06 understand how the pressure at a point in a gas or liquid at rest acts equally in all directions
stuart2019-06-27T11:20:00+00:005.04 practical: investigate density using direct measurements of mass and volume
stuart2022-11-29T15:14:23+00:005.01 use the following units: degree Celsius (°C), Kelvin (K), joule (J), kilogram (kg), kilogram/metre3 (kg/m3), metre (m), metre2 (m2), metre3 (m3), metre/second (m/s), metre/second2 (m/s2), newton (N) and pascal (Pa)
stuart2019-06-27T10:45:22+00:004.19 describe the advantages and disadvantages of methods of large-scale electricity production from various renewable and non-renewable resources
stuart2019-06-27T10:45:36+00:004.18 describe the energy transfers involved in generating electricity using: wind, water, geothermal resources, solar heating systems, solar cells, fossil fuels, nuclear power
stuart2022-11-29T15:13:57+00:004.17 use the relationship between power, work done (energy transferred) and time taken:
stuart2022-11-29T15:13:32+00:004.16 describe power as the rate of transfer of energy or the rate of doing work
stuart2022-11-29T15:13:21+00:004.15 understand how conservation of energy produces a link between gravitational potential energy, kinetic energy and work
stuart2022-11-29T15:12:52+00:004.13 know and use the relationship between gravitational potential energy, mass, gravitational field strength and height: GPE = m × g × h
stuart2022-11-29T15:06:49+00:004.11 know and use the relationship between work done, force and distance moved in the direction of the force: W = F × d
stuart2019-06-27T08:21:27+00:004.10 explain ways of reducing unwanted energy transfer, such as insulation
stuart2019-06-27T08:20:29+00:004.08 explain how emission and absorption of radiation are related to surface and temperature
stuart2019-06-27T08:19:42+00:004.06 describe how thermal energy transfer may take place by conduction, convection and radiation
stuart2022-11-29T15:04:19+00:004.05 describe a variety of everyday and scientific devices and situations, explaining the transfer of the input energy in terms of the above relationship, including their representation by Sankey diagrams
stuart2022-11-29T15:04:08+00:004.04 know and use the relationship between efficiency, useful energy output and total energy output:
stuart2022-11-29T15:03:36+00:004.02 describe energy transfers involving energy stores: energy stores: chemical, kinetic, gravitational, elastic, thermal, magnetic, electrostatic, nuclear and energy transfers: mechanically, electrically, by heating, by radiation (light and sound)
stuart2022-11-29T15:03:24+00:004.01 use the following units: kilogram (kg), joule (J), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s) and watt (W)
stuart2019-06-27T08:15:57+00:003.29 understand how the loudness of a sound relates to the amplitude of vibration of the source
stuart2019-06-27T08:15:34+00:003.28 understand how the pitch of a sound relates to the frequency of vibration of the source
stuart2019-06-28T09:18:46+00:003.27 practical: investigate the frequency of a sound wave using an oscilloscope
stuart2019-06-27T08:14:34+00:003.26 understand how an oscilloscope and microphone can be used to display a sound wave
stuart2022-11-29T15:01:34+00:003.23 know that sound waves are longitudinal waves which can be reflected and refracted
stuart2019-06-28T09:17:28+00:003.22 know and use the relationship between critical angle and refractive index:
stuart2022-11-29T15:00:49+00:003.20 describe the role of total internal reflection in transmitting information along optical fibres and in prisms
stuart2022-11-29T15:00:12+00:003.15 use the law of reflection (the angle of incidence equals the angle of reflection)
stuart2022-11-29T14:59:53+00:003.14 know that light waves are transverse waves and that they can be reflected and refracted
stuart2022-11-29T14:58:58+00:003.13 explain the detrimental effects of excessive exposure of the human body to electromagnetic waves, including: microwaves: internal heating of body tissue, infrared: skin burns, ultraviolet: damage to surface cells and blindness, gamma rays: cancer, mutation and describe simple protective measures against the risks
stuart2022-11-29T14:58:44+00:003.12 Explain some of the uses of electromagnetic radiations, including: radio waves: broadcasting and communications, microwaves: cooking and satellite transmissions, infrared: heaters and night vision equipment, visible light: optical fibres and photography, ultraviolet: fluorescent lamps, x-rays: observing the internal structure of objects and materials, including for medical applications, gamma rays: sterilising food and medical equipment.
stuart2022-11-29T14:58:29+00:003.11 know the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency, including the colours of the visible spectrum
stuart2022-11-29T14:58:17+00:003.10 know that light is part of a continuous electromagnetic spectrum that includes radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray radiations and that all these waves travel at the same speed in free space
stuart2019-06-27T07:58:03+00:003.08 explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer, and that this is known as the Doppler effect
stuart2022-11-29T14:57:37+00:003.07 use the above relationships in different contexts including sound waves and electromagnetic waves
stuart2019-06-28T09:12:29+00:003.06 use the relationship between frequency and time period: time period x frequency = 1 or f = 1/T
stuart2022-11-29T14:57:25+00:003.05 know and use the relationship between the speed, frequency and wavelength of a wave: v = f × λ
stuart2022-11-29T14:57:05+00:003.04 know that waves transfer energy and information without transferring matter
stuart2022-11-29T14:56:50+00:003.03 know the definitions of amplitude, wavefront, frequency, wavelength and period of a wave
stuart2022-11-29T14:56:27+00:003.01 use the following units: degree (°), hertz (Hz), metre (m), metre/second (m/s) and second (s)
stuart2019-06-27T07:52:17+00:002.28 explain some uses of electrostatic charges, e.g. in photocopiers and inkjet printers
stuart2019-06-27T07:51:45+00:002.27 explain the potential dangers of electrostatic charges, e.g. when fuelling aircraft and tankers
stuart2019-06-27T07:51:15+00:002.26 explain electrostatic phenomena in terms of the movement of electrons
stuart2019-06-27T07:50:59+00:002.25 know that there are forces of attraction between unlike charges and forces of repulsion between like charges
stuart2019-06-27T07:50:36+00:002.24 explain how positive and negative electrostatic charges are produced on materials by the loss and gain of electrons
stuart2019-06-28T08:44:02+00:002.22 identify common materials which are electrical conductors or insulators, including metals and plastics
stuart2019-06-28T07:38:23+00:002.21 know and use the relationship between energy transferred, charge and voltage: E = Q × V
stuart2019-06-28T08:43:46+00:002.20 know that: voltage is the energy transferred per unit charge passed and the volt is a joule per coulomb
stuart2022-11-29T14:29:53+00:002.19 calculate the currents, voltages and resistances of two resistive components connected in a series circuit
stuart2019-06-28T07:37:04+00:002.18 know that the voltage across two components connected in parallel is the same
stuart2022-11-29T14:29:36+00:002.16 know that electric current in solid metallic conductors is a flow of negatively charged electrons
stuart2019-06-28T07:35:48+00:002.15 know and use the relationship between charge, current and time: Q = I × t
stuart2022-11-29T14:29:07+00:002.13 know and use the relationship between voltage, current and resistance: V = I × R
stuart2022-11-29T14:28:53+00:002.12 know that lamps and LEDs can be used to indicate the presence of a current in a circuit
stuart2019-06-28T07:33:24+00:002.11 describe the qualitative variation of resistance of light-dependent resistors (LDRs) with illumination and thermistors with temperature
stuart2022-11-29T14:28:42+00:002.10 describe the qualitative effect of changing resistance on the current in a circuit
stuart2022-11-29T14:28:28+00:002.09 describe how current varies with voltage in wires, resistors, metal filament lamps and diodes, and how to investigate this experimentally
stuart2022-11-29T14:28:18+00:002.08 understand how the current in a series circuit depends on the applied voltage and the number and nature of other components
stuart2019-06-28T08:29:36+00:002.07 explain why a series or parallel circuit is more appropriate for particular applications, including domestic lighting
stuart2022-11-29T14:27:43+00:002.06 know the difference between mains electricity being alternating current (a.c.) and direct current (d.c.) being supplied by a cell or battery
stuart2019-06-28T08:28:50+00:002.05 use the relationship between energy transferred, current, voltage and time: E= I × V × T
stuart2022-11-29T14:27:26+00:002.04 know and use the relationship between power, current and voltage: and apply the relationship to the selection of appropriate fuses
stuart2019-06-28T08:28:07+00:002.03 understand why a current in a resistor results in the electral transfer of energy and an increase in temperature, and how this can be used in a variety of domestic contexts
stuart2019-06-28T08:27:39+00:002.02 understand how the use of insulation, double insulation, earthing, fuses and circuit breakers protects the device or user in a range of domestic appliances
stuart2022-11-29T14:27:12+00:002.01 use the following units: ampere (A), coulomb (C), joule (J), ohm (Ω), second (s), volt (V) and watt (W)
stuart2019-06-28T09:08:49+00:001.24 describe elastic behaviour as the ability of a material to recover its original shape after the forces causing the deformation have been removed
stuart2019-06-28T09:08:24+00:001.23 know the the initial linear region of a force-extension graph is associated with Hooke’s law
stuart2019-06-28T09:07:44+00:001.21 describe the forces acting on falling objects (explain why falling objects reach a terminal velocity)
stuart2022-11-29T14:26:01+00:001.20 describe the factors affecting vehicle stopping distance, including speed, mass, road condition and reaction time
stuart2022-11-29T14:25:47+00:001.19 know that the stopping distance of a vehicle is made up of the sum of the thinking distance and the breaking distance
stuart2022-11-29T14:25:35+00:001.18 know and use the relationship between weight, mass and gravitational field strength: W=mxg
stuart2022-11-29T14:25:22+00:001.17 know and use the relationship between unbalanced force, mass and acceleration : F = M x A
stuart2022-11-29T14:24:22+00:001.12 identify different types of force such as gravitational or electrostatic
stuart2022-11-29T14:23:47+00:001.11 describe the effects of forces between bodies such as changes in speed, shape or direction
stuart2019-06-28T09:05:27+00:001.10 use the relationship between final speed, initial speed, aceleration and distance moved
stuart2022-11-29T14:23:29+00:001.09 determine the distance travelled from the area between a velocity-time graph and the time axis
stuart2022-11-29T14:23:12+00:001.08 determine acceleration from the gradiend of a velocity-time graph
stuart2022-11-29T14:21:23+00:001.06 know and use the relationship between acceleration, change in velocity and time taken
stuart2022-11-29T14:21:07+00:001.05 practical: investigate the motion of everyday objects such as a toy car or tennis ball
stuart2022-11-29T13:32:19+00:001.04 know and use the relationship between average speed, distance moved and time taken
stuart2019-06-28T08:48:05+00:001.02 use the following units: Newton metre (Nm), kilogram metre/second (kgm/s)
stuart2022-11-29T13:44:48+00:001.01 use the following units: kilogram (kg), metre (m), metre/second (m/s), metre/second^2(m/s^2), newton (N), second (s) and newton/kilogram(N/kg)