Practice WHY OBJECTS FLOAT OR SINK WHEN PLACED ON THE SURFACE OF WATER - 9.5.3 | 9. Gravitation | CBSE 9 Science
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is buoyancy?

πŸ’‘ Hint: Think about why things float.

Question 2

Easy

If an object has a density less than water, what will happen when it is placed in water?

πŸ’‘ Hint: Consider the relationship between density and buoyancy.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What determines if an object floats or sinks in a fluid?

  • Its color
  • Its density compared to the fluid
  • Its size
  • Its shape

πŸ’‘ Hint: Think about the properties of the object and fluid.

Question 2

True or False: Any object can float if it is shaped correctly.

πŸ’‘ Hint: Consider what really makes an object buoyant.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A solid cube of wood displaces 40 cmΒ³ of water while weighing 30 N. Given that the density of water is 1 g/cmΒ³, will it float or sink? Show your calculations.

πŸ’‘ Hint: Check the relationship between weight and displaced water.

Question 2

A ship is designed with an overall mass of 100,000 kg and a volume of 1,000 mΒ³. Calculate its density and determine if it will float in freshwater (density of water = 1,000 kg/mΒ³).

πŸ’‘ Hint: Remember density comparison for buoyancy.

Challenge and get performance evaluation