The layers of gases that surround the Earth. The important gases are nitrogen, oxygen and carbon dioxide. - atmosphere, Applying a substance to a surface to reduce friction, e.g. engine oil - lubrication, Changing the shape of an object - deformation, When two balanced forces squash an object - compression, When two balanced forces stretch an object - tension, Force exerted over an area - pressure, The force acting on an object due to gravity - weight, The point around which something can rotate or turn - pivot,

Forces 2 Y8 Key words Flashcards

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