P1 - Unit 1 0.0 / 5 ? PhysicsEnergyWavesGCSEAQA Created by: emilygibson97Created on: 05-04-14 19:34 What is infrared radiation? Energy transfer by electromagnet waves. 1 of 10 What absorb infrared radiation quickest? Dark and matt surfaces. 2 of 10 What effects the rate of energy transfer? The shape, size, type of material, temperature difference between the object and it's surroundings. 3 of 10 What are the different forms of energy? Light, sound, kinetic, nuclear, electrical, gravitational potential, elastic potential and chemical. 4 of 10 How can you make machines more efficient? Reducing friction, air resistance, electrical resistance and noise due to vibrations. 5 of 10 What is payback time? The time it takes for an appliance or installation to pay for itself in terms of energy. 6 of 10 What are transverse waves? Waves that oscillate perpendicular to the direction of travel, e.g. electromagnetic waves 7 of 10 What are longitudinal waves? Waves that oscillate parallel to the direction of travel, made up of compression and rarefractions, e.g. sound waves; 8 of 10 What waves are used for communication? Light, infrared, microwaves and radio waves. 9 of 10 What radiation was created after the 'Big Bang'? Cosmic microwave background radiation. 10 of 10
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