Physics (3) - Extension Edexcel A physics test on the extension science edexcel 3.5 / 5 based on 2 ratings ? PhysicsGCSEAll boards Created by: AlexCreated on: 23-05-12 19:14 What is Kelvin in degrees? -273 1 of 4 When water molecules are heated do they have more energy so they can escape? True 2 of 4 What is the process in which electrons are released from the hot cathode? Thermionic emission 3 of 4 What is ultra sound radiation? High frequency radiation 4 of 4
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