Practice Why Objects Float Or Sink When Placed On The Surface Of Water (9.5.3)

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8 questions

Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is buoyancy?
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Think about why things float.
Question 2.
If an object has a density less than water, what will happen when it is placed in water?
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Consider the relationship between density and buoyancy.
3Question 3.
What determines if an object floats or sinks in a fluid?
- Its color
- Its density compared to the fluid
- Its size
- Its shape
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Think about the properties of the object and fluid.
4Question 4.
True or False: Any object can float if it is shaped correctly.
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Consider what really makes an object buoyant.
Question 5.
A solid cube of wood displaces 40 cm³ of water while weighing 30 N. Given that the density of water is 1 g/cm³, will it float or sink? Show your calculations.
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Check the relationship between weight and displaced water.
Question 6.
A ship is designed with an overall mass of 100,000 kg and a volume of 1,000 m³. Calculate its density and determine if it will float in freshwater (density of water = 1,000 kg/m³).
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Remember density comparison for buoyancy.

4 more questions in this section. Enroll free to practise them all.