Materials crossword 0.0 / 5 ? PhysicsMaterialsA2/A-levelAQA Created by: zoeknowlesCreated on: 05-06-17 16:03 .......... mass by 9.81 to get weight multiply 1 of 24 mass per unit volume density 2 of 24 The law stating force is proportional to extension provided the elastic limit has not been reached Hookes 3 of 24 Finding this gives the spring stiffness constant for a graph of F vs extension gradient 4 of 24 for two springs in parallel the gradient of F vs extension will be ........... that of a single spring double 5 of 24 The area under the graph of F vs extension gives (two words) Energy stored 6 of 24 the difference in the x axis intercepts for a loading and unloading curve permanent extension 7 of 24 The type of deformation when a graph of F vs extension becomes curved plastic 8 of 24 Force dividied by cross sectional area stress 9 of 24 Extension divided by original length strain 10 of 24 Stress divided by strain Youngs modulus 11 of 24 Unit for youngs modulus and stress Pascal 12 of 24 The gradient of the straight line section of a stress strain graph (two words) Youngs Modulus 13 of 24 The description of a material when it returns to it's original size and shape when the load has been removed Elastic 14 of 24 Can be drawn out into wires Ductile 15 of 24 The description of a material which cannot be permanently stretched and breaks soon after the elastic limit has been reached Brittle 16 of 24 The maximum stress which can be applied without causing a permanent extension (two words) elastic limit 17 of 24 A point at which a small amount of additional force causes a substantial extension (two words) Yield point 18 of 24 The stress at which a material breaks Breaking stress 19 of 24 A material which can withstand a large force before it breaks Strong 20 of 24 A material which is requires a large force in order to change its shape or size Stiff 21 of 24 A material expands slowly when exposed to long term stresses Creep 22 of 24 The point of maximum stress on a stress strain graph UTS 23 of 24 When a material gets narrow in one point along its length when undergoing a stress necks 24 of 24
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