Physics crossword 11 0.0 / 5 ? PhysicsGeneralA2/A-levelOCR Created by: EMHartley13Created on: 30-05-17 13:46 968312754 Across 1. resistance within a source of e.m.f. resulting in a drop of terminal p.d. when a current is drawn from the source (8, 10) 4. at the microscopic scale, a material that has no long range order. eg, glass, the atoms form strong bonds with each other to make a rigid, irregular structure (9) 5. a material has this property if it does not break by snapping cleanly, and if it absorbs a lot of energy before fracture when deforming plastically. This is the opposite of brittleness (5) 7. a current induced in the core of a transformer (4, 7) 8. the square root of the mean square speed, used when quoting molecular speeds (4, 4, 6, 5) Down 2. a switching mechanism that reverses the connections to the coil of an electric motor to maintain its direction of rotation (10) 3. the mass of 1 mol of any substance (5, 4) 6. the stress at which fracture occurs. Also called tensile strength (8, 6) 9. a single 'picture element'. In a digital camera, a lens is used to form a real image on a chip with an array of the order of a million very small light-sensitive detectors, each of these corresponding to one * of the final image (5)
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