03 July, 2012

27/6/12 Wednesday Grade ----7 subject ---physics


Hydrometer Activity
Students  made modified model of hydrometer using straw, clay & salt. Students marked the scale on straw, sealed one of the end with clay & filled salt upto 1cm mark . Then this straw was dipped in water. It was found that it floats & the part dipped gives the density of liquid.

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