# Boardworks AS Physics

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1 Boardworks AS Physics Vectors 24 slides 11 Flash activities Prefixes, scalars and vectors Guide to the SI unit prefixes of orders of magnitude Matching powers of ten to their SI unit prefixes Guide to example scalar and vector measurements Overview of vector equations Identifying measurements as being either scalar or vector Mechanics Displacement vectors Overview of displacement vectors Vector notation and vector addition How to calculate a resultant vector Create-your-own vector activity, including calculations involving the resultant Velocity vectors Overview of vector components and how to calculate them Create-your-own vector activity, including calculations involving the components Calculations relating to velocity vectors, including full working out Identifying missing words relating to vectors July /13

2 Kinematics 21 slides 11 Flash activities suvat equations Animation illustrating how a displacement time graph can be interpreted Animation illustrating how a velocity time graph can be interpreted Overview of the suvat equations Calculations relating to the suvat equations, including full working out Animation illustrating how the suvat equations can be derived from a velocity time graph Freefall and projectile motion Mechanics Guide to key milestones in the understanding of gravity Acceleration of freefall Animation illustrating how a camera and stroboscope can be used to record projectile motion Overview of the equations of projectile motion Animation illustrating an example calculation using the equations of projectile motion Example calculation relating to the equations of projectile motion Simulation in which the trajectory of a cannonball needs to be calculated July /13

3 Dynamics 28 slides 10 Flash activities Newton s first law Overview of balanced forces and Newton s first law Animation illustrating the concept of relativity Identifying true-or-false statements about Newton s first law Animation illustrating the concept of free body diagrams Calculations relating to equilibrium on a slope, including full working out Mechanics Newton s second law Overview of unbalanced forces and Newton s second law Example calculation involving F = ma Animation illustrating terminal velocity, by the example of skydiving on the Earth and the Moon Calculations relating to Newton s second law, including full working out Newton s third law Overview of action and reaction pairs, and Newton s third law Identifying true-or-false statements about Newton s third law July /13

4 Moments and Centre of Gravity 26 slides 11 Flash activities Moments Overview of moments and torque Animation explaining how to calculate moments when force and distance are not perpendicular Overview of couple and the torque of a couple Matching key terms relating to moments to their definitions or equations Centre of gravity Mechanics Overview of centre of mass and centre of gravity Animation explaining how to find the centre of gravity of an object Identifying missing words relating to centre of gravity Equilibrium Overview of equilibrium, beam balancing and the principle of moments Calculations involving beam balancing and randomly-generated forces Calculations relating to balancing moments, including full working out The principle of moments applied to the human forearm carrying a weight Simulation involving the centre of gravity of a block on a slope Beam balancing taking into account the centre of gravity of the beam Identifying systems that are in equilibrium and how systems not in equilibrium could be made to balance July /13

5 Work, Energy and Power 39 slides 12 Flash activities Work Overview of work done, and example calculations Work done at an angle, and example calculations Simulation to investigate work done when a force is applied to a trolley at an angle to the direction of motion Animation illustrating how work done can be calculated from a force distance graph Identifying true-or-false statements about work done Kinetic and potential energy Mechanics Types of energy and energy transfer Gravitational potential energy and example calculations involving E p = mgh Animation illustrating the effect of a slope on work done and the force needed to raise an object Kinetic energy and example calculations involving E k = ½mv 2 Conservation of energy, including example questions involving E p and E k Simulation of a rollercoaster, including calculations involving E p, E k and energy lost to resistive forces Calculations relating to energy, including full working out Power and efficiency Power, motive power and example calculations Efficiency and the use of Sankey diagrams Identifying missing values in a Sankey diagram Calculations relating to power and efficiency, including full working out Matching terms relating to work, energy and power with their equations July /13

6 Simple Circuits 27 slides 12 Flash activities Circuit symbols Overview of the importance of circuit symbols Identifying basic circuit symbols Guide to more specialized electrical components Current, voltage and resistance Electricity Overview of current, voltage and resistance Experiment to investigate the relationship between current, voltage and resistance in two simple circuits Current voltage graphs of Ohmic and non-ohmic devices Animation illustrating how to calculate the resistance of a non-ohmic device from its current voltage graph Identifying true-or-false statements about current, voltage and resistance Kirchoff s laws Overview of Kirchoff s first law Using Kirchoff s first law to calculate ammeter readings in a circuit Conservation of energy in a circuit Overview of Kirchoff s second law Using Kirchoff s second law to calculate voltmeter readings in a circuit Further uses of Kirchoff s laws Calculations relating to Kirchoff s laws, including full working out Identifying missing words relating to Kirchoff s laws July /13

7 Resistance and Resistivity 31 slides 17 Flash activities Ohm s law Overview of resistance and Ohm s law Finding the resistance from a current voltage graph Animation describing the use of a test circuit to obtain current voltage graphs for various components Identifying the correct descriptions of various current voltage graphs Identifying circuit symbols and current voltage graphs of various components Identifying missing words relating to Ohm s law Resistors in series and parallel Electricity Overview of equivalent resistance Resistance equations for resistors in series and parallel Calculations relating to resistors in series and parallel, including full working out Resistivity Overview of, and equation for, resistivity Example worked calculations relating to the resistivity equation Calculations relating to the resistivity equation, including full working out Sorting materials according to whether their resistivity increases or decreases with temperature Experiment investigating the effect of temperature on resistance of a resistor and a thermistor Arranging various substances in order of resistivity E.m.f. and internal resistance Animation explaining e.m.f., internal resistance and terminal p.d. Calculations relating to the e.m.f. equations, including full working out Animation explaining how to find e.m.f. and internal resistance from a current voltage graph Matching phrases relating to e.m.f. July /13

8 Using Electricity 32 slides 16 Flash activities Sensors Matching sensing components to their symbols and descriptions Explanation of the properties of LDRs and thermistors Identifying missing words relating to sensors Electricity Potential dividers Experiment illustrating how voltage varies through a simple nichrome wire Overview of potential dividers and the potential divider equation Example worked calculations relating to the potential divider equation Experiment illustrating how a potential divider s V OUT is affected by the addition of an LDR, thermistor or variable resistor, under varied conditions Calculations relating to the potential divider equation, including full working out Identifying missing words relating to potential dividers and their use in sensor circuits Power and energy in circuits Overview of electrical power and the different forms of the power equation Example worked calculations relating to the electrical energy equation Overview of efficiency, and example calculations involving calculations of domestic energy consumption Alternating currents Overview of drift velocity Guide to the terms of the equation I = nave Demonstration of the differences between AC and DC when viewed on an oscilloscope Overview of root mean squared (RMS) measures of AC signals Calculations of V RMS linked to oscilloscope data Identifying true-or-false statements relating to AC and DC signals July /13

9 Waves 41 slides 21 Flash activities Types of wave Key distinguishing features of transverse and longitudinal waves Simulations of transverse and longitudinal waves Mechanical and electromagnetic waves Guide to examples of transverse and longitudinal waves Identifying types of wave as being either transverse or longitudinal Guide to features of a transverse wave Animation illustrating how light can be plane-polarized by a polarizing filter Identifying missing words relating to waves Waves Measuring waves Introducing period and frequency Example worked calculations relating to wave speed, wavelength and frequency Calculations relating to wave speed, wavelength and frequency, including full working out Animation illustrating phase difference Identifying the phase difference of two points on a series of wave diagrams Superposition and interference The principle of superposition Simulation illustrating constructive and destructive interference Interference patterns, path difference and lines of maxima and minima Simulation of two point interference Animation illustrating the derivation of w = λd / s from a double slit set-up Simulation of the double slit interference experiment using monochromatic light Stationary waves Progressive vs. stationary waves, and the concept of nodes and antinodes Simulation to produce stationary waves by varying the wave characteristics of two waves travelling in opposite directions Experiment to investigate the fundamental frequency and harmonics of a vibrating string Guide to how stationary waves can be used to determine the speed of sound Identifying true-or-false statements about stationary waves July /13

10 Optics 34 slides 15 Flash activities The EM spectrum Overview of optics and the electromagnetic spectrum Guide to the main components of the electromagnetic spectrum Lasers as light sources Completing sentences about the electromagnetic spectrum Refraction Refraction and optical density Simulation of refraction between different media Refractive index and the law of refraction Calculations relating to refraction, including full working out Waves Total internal reflection Simulation of total internal reflection between air and water Guide to finding the critical angle for the interface between two media Animation illustrating how optical fibres make use of total internal reflection Guide to the structure of optical fibres in relation to the critical angle about total internal reflection and the critical angle Diffraction Overview of single slit diffraction: pattern and intensity Diffraction gratings and their use in spectrometers Animation illustrating the derivation of the diffraction grating equation nλ = dsinθ Simulation of the use of a diffraction grating and the diffraction grating equation Calculations relating to diffraction gratings, including full working out July /13

11 Particle Physics 41 slides 21 Flash activities Structure of the atom Milestones in the understanding of atomic structure Guide to protons, neutrons and electrons Specific charge, atomic number, proton number and isotopes Animation illustrating the action of the strong nuclear and electrostatic forces Guide to radioactive decay Identifying true-or-false statements about atomic structure Particles and interactions Matter Photons, rest mass and minimum energy Overview of antimatter and the neutrino Identifying properties of particles and antiparticles Animation illustrating annihilation and pair production The four fundamental forces, exchange particles and the W boson Animation explaining Feynman diagrams Guide to Feynman diagrams for some important interactions Guide to particle classification Mesons and strangeness Overview of particle interactions through the strong, weak and electrostatic forces Decay of other baryons into protons Identifying correct particle classifications Identifying the correct Feynman diagram Identifying missing words relating to particles, antiparticles and interactions Quarks and antiquarks Overview of quarks and their properties Identifying quark combinations for mesons Identifying quark combinations for baryons Beta decay in terms of quarks Guide to conservation of quantities in particle interactions Identifying correct quark combinations for mesons and baryons Identifying reactions that will or will not take place and why July /13

12 Quantum Physics 34 slides 16 Flash activities Thermal emission Overview of thermal radiation Animation explaining why a hot object emits light as well as thermal radiation Thermal emission and the incandescent light bulb Experiment to investigate line spectra for various elements Animation explaining why line spectra are produced by hot gases Overview of electron energy levels Identifying missing words relating to thermal emission A closer look at energy levels Matter Overview of absorption spectra to identify which elements are contributing to a star s absorption spectrum Example worked calculations relating to photon energy Overview of the electron volt Calculations relating to waves and photon energy, including full working out How to calculate the wavelength of emitted radiation The photoelectric effect Overview of photoelectricity Animation illustrating photoelectricity using a gold leaf electroscope Guide to Einstein s photoelectric equation and the work function Calculations relating to Einstein s photoelectric equation, including full working out De Broglie waves Identifying properties of light corresponding to either its wave-like or particle-like behaviour Overview of the De Broglie wavelength Calculations relating to De Broglie wavelength, including full working out Identifying true-or-false statements relating to waves and particles July /13

13 Materials 34 slides 17 Flash activities Density Overview of density and the uses of materials Guide to finding the density of regular solids, irregular solids and liquids Calculations relating to density, including full working out Behaviour of springs Overview of tensile and compressive forces Overview of restoring forces Overview of Hooke s law and the force constant Animation illustrating how to find the spring constant from a force extension graph Calculations relating to the force constant, including full working out Definitions of the limit of proportionality and elastic limit Matter Elastic potential energy Overview of elastic potential energy and work done Animation illustrating the derivation of the equation for elastic potential energy for a spring from its force extension graph Matching variables to their equations The Young modulus Animation defining stress and strain, and the equation for the Young modulus Guide to calculating the Young modulus Guide to the terms ultimate tensile stress, elastic deformation, plastic deformation, Young modulus, elastic limit, yield point and breaking Comparing the Young modulus by comparing stress strain graphs Stiffness, strength and toughness Simulation of a tensile tester with ductile, brittle and polymeric materials Guide to stress strain graphs for ductile, brittle and polymeric materials Measuring the Young modulus in the classroom Calculations relating to the Young modulus, including full working out July /13

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