The unit of energy. - Joule, The unit of temperature. - Degrees celcius, The unit of power. - Watt, What is the type of energy store in hot objects? - Thermal, What is the type of energy store in food? - Chemical, What type of energy is stored in an object held at a height? - Gravitational potential, What type of energy store is in a moving object? - Kinetic, What are the stages of energy production in a thermal power station? - Burn a fuel, the heat produced boils water into steam, the steam turns a turbine, the turbine drives a generator, the generator makes electricity, the electricity goes to the electricity pylons., 2000J of energy is released in 100g of food. How much food is needed in 200g of the food? - 2000J, When you turn on a light bulb, some energy dissipates into the surroundings. What does dissipate mean? - The heat energy spreads out as waste energy., What is thermal equilibrium? - When objects are at the same temperature. No more energy is transferred between objects., What the energy transfer in a solid called? - Conduction, Heated particles rise and are replaced by cooler particles. These absorb heat energy and rise, to replaced by cooler particles. What is this energy transfer called? - Convection (current), Name two sources of infrared radiation. - The sun, fire etc., Which of these are renewable energy resources? - geothermal, wind turbine, crude oil, What is a fossil fuel? - The remains of animals or plants from millions of year ago used as a fuel., Rearrange the formula power = energy/time in terms of energy equals.. - energy = power x time, Name two types of simple machine. - Gear and lever, A lever isa force multiplier. What does this mean? - When the force on one end of the lever is bigger than the force you applied at the other end.,

Energy

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