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Powerpoint Description:

This slideshow covers the Physics Global Challenges unit, including: typical everyday speeds, the speed of sound in different materials, acceleration and speed recap, converting units (e.g. mph into m/s), measuring reaction times, factors affecting the stopping distance of a car, representing stopping distances with diagrams, approximate values for acceleration and force, estimating values for deceleration and force, fuels, renewable and non-renewable sources of energy, pollution, advantages and disadvantages of renewable and non-renewable sources of energy, examples of renewable sources of energy such as wind, wave, solar and hydroelectric power, energy supply in the UK, the National Grid and why we have it, how transformers work, numerical questions on transformers, AC and DC compared, how to wire a plug, potential differences between different wires in a plug, how the universe began, evidence for the Big Bang Theory (red shift and the Doppler effect), the life cycle of a star including nebulae, protostars, main sequence stars, red giants, red supergiants, neutron stars and black holes, how absorbing radiation is affected by colour, colour and temperature, planets in our solar system, comets, moons, satellites, artificial satellites and their different orbits (low polar and geostationary), how orbital times and speeds depend on distance, the Earth's temperature and how it is balanced, using waves for detection and exploration including sonar and seismic waves.

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