Explain why, big boulders can be moved easily by flood.
During the floods, the boulders are immersed in water. The apparent weights of the boulders are less and that helps the flowing water to push and move the boulders.
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Solution Explain Why, Big Boulders Can Be Moved Easily by Flood. Concept: Thrust and Pressure - Why Objects Float Or Sink When Placed on the Surface of Water?.