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Match the items of Column A with those of Column B :Column BColumn A(a) Magnetic substances1. Magnetite(b) A dark coloured ore of iron2. Magnetic compass3. Nickel and cobalt(c) Used in navigation for indicating direction(d) Lodestone4. Non-magnetic substance5. Natural magnet(e) Paper(f) Exists in pairs6. Magnetic poles​

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Answer:

Thermal expansion is the tendency of matter to change in shape, volume, and area in RESPONSE to a change in TEMPERATURE. Temperature is a monotonic FUNCTION of the average molecular kinetic ENERGY of a substance. ... The kinetic energy of the molecules of a substance INCREASES when the substance is heated.



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