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skrite

  • 3 years ago

hey all, i need to know how a sponge works. Or a candle wick, or even a tree-root for that matter. What causes liquid to be absorbed ( against gravity ) into a substance (like a sponge, etc..) . What energy or process causes this to happen?

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  1. hakkunamatata
    • 3 years ago
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    simply it is the capillary rise and surface tension which does the job. Sponge has got tiny pores through which water seeps in by capillary rise........

  2. Annand
    • 3 years ago
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    there are some other cohesive forces which are acting within the liquids (surface tension for instance). This helps them to defy gravity at times...

  3. matthewrlee
    • 3 years ago
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    They have holes. Stuff fits into the holes until the holes are full.

  4. george7
    • 3 years ago
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    forces acting against gravity include capilary rise(due to surface tension), osmotic pressure since the concentration of water is more in the soil compared to the cell of roots.

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