1. The concept of buoyancy explains why objects float or sink in a fluid. It depends on whether the buoyant force exerted by the fluid on the object is greater than or less than the object's weight.

    The concept of buoyancy explains why objects float or sink in a fluid. It depends on whether the buoyant force exerted by the fluid on the object is greater than or less than the object’s weight.

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  2. A sheet of iron and steel sinks in water because its density is higher than that of water, causing it to be unable to displace enough water to support its weight, leading it to sink.

    A sheet of iron and steel sinks in water because its density is higher than that of water, causing it to be unable to displace enough water to support its weight, leading it to sink.

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  3. A ship made of iron and steel doesn’t sink in seawater because its design includes a hollow structure that displaces a large volume of water. This displacement creates enough buoyant force to counteract the ship's weight, keeping it afloat.

    A ship made of iron and steel doesn’t sink in seawater because its design includes a hollow structure that displaces a large volume of water. This displacement creates enough buoyant force to counteract the ship’s weight, keeping it afloat.

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