Observe and write in plain water and ice water boats made of paper and aluminum file paper to float or sink
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Answer:
When placed carefully, the plate would float in water. However, the spoon immediately sinks. Why do some things float while some others sink? This mainly happens because of a phenomena known as buoyancy.
Everything displaces water equal to its volume. If the displaced water is more than the weight of a particular thing, then that object floats. On the other hand, when the displaced water is less than the weight of an object, it sinks. Sounds interesting, isn’t it? Now, we will look at some common examples in our daily life.
An iron nail sinks in water while a flat cup floats. This is because the nail is unable to displace the amount of water equivalent to its weight. Similarly, an empty plastic bottle floats on water. However, when you fill it up with water, the bottle sinks. This is because it is unable to displace that much volume of water.
You will also notice that it is easier for an aluminium foil to float in water. However, when you roll it into the shape of a ball, it sinks. The reason remains the same as above.