5th Class Science Weather, Air and Water Question Bank Water

  • question_answer
    Directions: Read the passage carefully and answer the following questions. The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than the liquid it is placed in. An object will sink if it is more dense than the liquid it is placed in. For instance a candle floats and a clay sinks even though the candle is heavier than the piece of clay. It?s not the weight of the object but, its density compared to the density of water that determines whether an object will sink or float in water. Two objects. Object A and object B are given. Object A is heavier than object B but still floats in water. Which of the following is the correct reason for it?     

    A) Object A is made up of paper.

    B) Object A is less dense than the density of water

    C) Object A is heavier than object B

    D) All of these

    Correct Answer: B

    Solution :

        Object A (say candle) is heavier than object B (say clay) but still object A floats because object A is less dense compared to the density of water it is placed in.


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