Nelson Thornes/AQA AS Physics A Weblinks Chapter 1 – Matter and radiation URL Descriptive name Description Wolfram Demonstrations Project – Scientific Notation Scientific notation is a way of writing very or very small numbers in a compact form. The most important thing about a number is its order of magnitude. (Mathematica Player free download needed to run the demonstration.) Molecular Expressions – Science, Optics and You – Powers of 10 ‘Secret Worlds: The Universe Within’ through space in successive orders of magnitude, ‘’, and into the subatomic universe of electrons and protons. Nikon - Universcale From the extremities of down to the femtometre. Jump to the page that you want by clicking on the scale number or use your mouse if it is wheeled. Teachers’ Domain – Atoms: The Space Between You wouldn't know it to look at it, but the atoms that make up a solid piece of iron contain more space than stuff. How is it then that the whole world doesn't just crumble around us? This 75 second video segment adapted from A Science Odyssey uses models, vivid descriptions, and analogies to explain the structural integrity of matter at the atomic level. Hydrogen Atom Model Compare an electron (one to a proton and the space between. Scroll from the proton to the right a screen at a time! The Size Of Our World Use these images to appreciate the scale of the universe. Care 2: – Just Remember: Eric Idle ‘Whenever life gets you down Mrs Brown…’ song on about the size of the universe. and Physics 2000 – Isotope table applet from Science Trek – Isotopes and Radioactivity This isotope table shows – and + decays resulting in stable nuclei. This is part of the Physics 2000 interactive tutorial on Isotopes and Radioactivity.
or via – Kinematics in 1D Animation with x-t, v-t and a-t graphs of a car accelerating, maintaining a constant velocity, then braking. PhysicsLab – Speed and Acceleration This program is distance, speed and acceleration. It shows a brave rocket-powered skater on very smooth ice in a vacuum! You fire the rockets and give the skater a constant acceleration. Obtain readings or graphs and print-outs. Walter – Motion with constant acceleration This applet shows a car moving with constant acceleration. You can vary the values of initial position, velocity and acceleration (s-t, v-t and a-t graphs are drawn). Global View – Horizontal Block This applet draws s-t and v-t graphs. Set the initial values of displacement, velocity and acceleration then click ‘Run’. Upscale – DM Harrison – Motion Animation Set the acceleration of the car, the start button and display the corresponding v-t graph. General Physics Java Applets – Kinematics – Catch Up A red dot moves at a constant velocity while a yellow dot accelerates. ‘Stop’ when yellow catches red to observe the s-t and v-t graphs. Global View – Free Fall This applet allows students to measure free fall times and average velocities and hence determine the acceleration due to gravity. Upscale – DM Harrison – Projectile Motion Firing a projectile when air resistance is negligible. The initial height and angle may be adjusted. Click ‘Fire’ to display a y-x graph of the motion. St. Mary’s Physics Online – Projectile Horizontally Animation to show the independence of the horizontal and vertical motion of a projectile. Wolfram Demonstrations Project – Throw off a Cliff Two-dimensional display of the trajectory of an object thrown from a into the sea. Parameters of the trajectory that you can vary are the cliff height, the initial velocity and the initial angle. (Mathematica Player free download needed to run the demonstration.) or via – Aircraft Dropping a Bomb on Target This animation the parabolic path of a bomb dropped by an aircraft.
ESERC – Waveform Interaction Manipulate two sine waves and watch them interact. Change the wavelength, amplitude, phase or speed of the waves. PhET – Fourier: Making Waves See how the amplitudes of different harmonics change the Walter – Standing wave This applet explains standing waves by the superposition of the incident and reflected waves. or use the following, on the above Walter Fendt – Standing longitudinal waves This applet demonstrates the harmonics in a tube as an example of standing longitudinal and illustrates the movement of the molecules in the air. Select the form of the tube – both sides open, one side open or both sides closed. Upscale – DM Harrison - Reflections From Two Barriers An animation showing a wave reflected back and forth between two barriers, setting up a standing wave. CoLoS – This applet lets you visualize the difference between transverse and longitudinal progressing and standing waves. General Physics Java Applets – – Harmonics This applet shows the first three harmonics of a vibrating string. After selection of variables observe the sum of all the frequencies. PhET – Wave on a String Watch a string vibrate in slow motion. Wiggle the end of the string and make waves, or adjust the frequency and amplitude of an oscillator. Adjust the damping and tension. The end can be fixed, loose, or open. – An animation showing the standing wave patterns produced on a string of a musical instrument. Select the harmonics by clicking the appropriate checkbox. or via Penn – Interference of Harmonic Waves (varying phase) This animation shows the superposition of two waves, whose phase difference varies. Frederick H. Willeboordse's Simulations Gallery – Superposition of The superposition of waves can be demostrated with the help of music synthesis. See how waves add and what the results sound like.
Hydrogen Atom Scale Model Compare an electron (one pixel) to a proton and the space between. Scroll from the proton to the right a screen at a time! The Size Of Our World Use these images to appreciate the scale of the universe. The Particle Adventure The Particles Adventure – the fundamentals of matter and force – is an interactive tour of quarks, neutrinos, antimatter, extra dimensions, dark matter, accelerators and particle detectors. CERN – Resources for teaching See the following: CERN in general – What is CERN (ppt). – Videoclip (RealPlayer): . – LCH game. – (QuickTime). Also available at link via SEED Film – Lords of the Ring Why so many scientists are pinning their hopes on this experiment's potential to answer some of the biggest questions in science? Travel underground and behind the scenes to probe the cavernous Large Hadron Collider at CERN. UCL – CERN simulation applet Simulate accelerating electrons and positrons at CERN before seeing the results of their collision. Nova – CERN (July 2007) 12 min video: Beneath the Alps, the mother of all particle accelerators nears completion. Chapter 4 – The particle picture URL Descriptive name Description PhET – Photoelectric Effect See how light knocks electrons off a metal target, and recreate the experiment that spawned the field of quantum mechanics such as obtaining a graph of electron energy v light frequency with different metals. St. Mary’s Physics Online – The Photoelectric Effect This animation allows the user to select the radiation frequency and brightness, and the target metal. The electron current is then measured. Physics 2000 – The Atomic Lab and Science Trek. In The Atomic Lab see how some surprising 20th Century physics experiments show us that not everything is as it seems, for example wave-particle
duality. In Science Trek learn basic principles of waves, quantum mechanics, polarization, and the periodic table. PhET – Wave Interference Make waves with a dripping tap, audio speaker, or laser. Add a second source or a pair of slits to create an interference pattern. Upscale – DM Harrison – Double Slit Experiment for Electrons The famous ‘Feynman Double Slit Experiment’ for electrons. Click on 6 electrons per second to observe a faster build-up of electrons on the screen. Frederick H. Willeboordse's Simulations Gallery – Interference or Waves? Is an electron a particle or a wave? Explore various interference related phenomena with this applet. PhET – Models of the Hydrogen Atom How did scientists figure out the structure of atoms without looking at them? Try out different models by shooting photons and alpha particles at the atom. Check how the prediction of the model matches the experimental results. PPARC: - Evidence for the Big Bang; Dream journey into the atom; Matter and antimatter. - Big Questions, Big Experiment:The Large Hadron Collider - The Little Book of the Big Bang Order or download as pdf: - Cartoon posters, teachers notes and worksheets, describing the evidence for the expanding universe and the Big Bang model, atoms and what they are made of, including nuclei and quarks, and the differences between matter and antimatter. - Leaflet/ wallchart describing the Large Hadron Collider at CERN. It describes the ‘big questions’ about our Universe that scientists are trying to answer - and how the amazing LHC will help them do so. A cartoon booklet that introduces particle physics, particle accelerators and the Hadron Collider. The Particles Adventure The Particles Adventure – the fundamentals of matter and – is an interactive tour of quarks, neutrinos, antimatter, extra dimensions, dark matter, accelerators and particle detectors. Wolfram Demonstrations Project – Doppler Effect The Doppler effect is shown as a shift in the visible light spectrum. This Demonstration also shows how a sound wave produces a higher or lower frequency.
or via – Aircraft Dropping a Bomb on Target This animation the parabolic path of a bomb dropped by an aircraft. Chapter 9 – Looking at energy changes URL Descriptive name Description Kung Fu Science Ever wondered how they break wood, concrete and bricks with their bare hands? Join Chris Crudelli and Michelle Cain as they discover how physics can explain some of the mysteries of Kung Fu. or via – Creating Free Body Diagrams: An Example This animation an object on a level table being pulled by a falling weight. or via –Converting Potential Energy to Kinetic Energy on a Frictionless Ramp This animation shows the forces acting on an object sliding down and off a frictionless ramp. Potential and kinetic energy is monitored. Redlake – Vehicle Impact Testing – Barrier crash test 10 second high video of an Audi in a crash test that shows the rapid deployment of the airbag and the effect of the crumple zone. for example: The THINK! Road Safety Website Video, audio and printed media for the various THINK! campaigns can be downloaded by selecting from the 'drop-down' menus. See link for ‘Its 30 for a reason’ video. IIHS – Understanding Car Crashes: It's Basic Physics Video and teacher’s guide. Go behind the scenes to explore the basic science behind car crashes. Watch the trailer. Road safety – braking distance game Download this braking distance game needs a Flash player. The spacebar stops the car. Try to stop before hitting the pedestrian. – Reaction time measurement This applet displays reaction time and thinking distance + braking distance. to start the animation and brake to stop the car. – This applet simulates a multiple car pile-up, drawing a v-t graph for each car. You drive the second car. When the first car brakes, its colour will turning red, left click the mouse button to stop your car.