Part A Procedure : (1) Take some sand in a beaker or glass. (2) Place a cardsheet on it. (3) Keep a 10 coin on the cardsheet at the centre of the beaker or glass. (4) Now flick the cardsheet with a finger. (The movement must be very quick.) (5) Record your observation and explain it, Diagrams : Read the procedure and draw neat labelled diagrams accordingly.
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