how can wood float in water i think it's heavyer than water is it hollow??

Wood floats on water because wood has less density as compared to that of water. Density is the mass per unit of volume.
Thus wood being lighter in mass as compared to that of water for the same volume , makes wood float on the surface of water.

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Wood float on water because they are hving less dene than water.

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wood is having less density than water

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