Slide Preview for EdExcel Unit 1 - Universal Physics

Powerpoint Description:

Heliocentric and Geocentric models of the universe, evidence for the geocentric model, observing the universe, an introduction to waves, wave definitions, transverse and longitudinal waves, refraction, lenses, converging and diverging lenses, ray diagrams, focal length, lenses in refracting telescopes, mirrors in reflecting telescopes, the wave equation, wave speed, the visible spectrum, the development of the spectrum by Ritter and Wilhelm, electromagnetic radiation, the Electromagnetic Spectrum, uses and dangers of different EM waves, introduction to radioactivity, ionisation, introduction to space, relative sizes and distances of different stars and galaxies, observing the universe in different wavelengths, searching for aliens, SETI, soil sampling, how modern telescopes have helped, making a spectrometer with a CD, space-based and ground-based telescopes, the life cycle of a star, the role of gravity in stars, nebulae, main sequence stars, white dwarves, supernovae, black holes, the Big Bang theory and the Steady State theory, Cosmic Microwave Background Radiation, red shift and how it provides evidence for both theories, why the Big Bang theory is the accepted one, ultrasound, infrasound, the structure of the Earth, using seismic waves, plate movements, seismic waves travelling through the Earth, electric current, voltage, power, burning fossil fuels, how power stations work, pollution, nuclear power stations, advantages and disadvantages of renewable and non-renewable fuels, wind power, wave and tidal power, hydroelectricity, biomass, solar power, geothermal energy, electromagnetic induction, AC generators, DC and AC, the National Grid, power lines and their hazards, transformers, calculating transformer voltages, the cost of electricity, calculating and reducing energy consumption, energy and power, the different types of energy, conservation of energy, energy changes, efficiency, Sankey diagrams, radiation, how surface types affect the absorption and emission of heat.