Mass and Weight. Science CBSE, Class 9: lessons, tests, tasks.

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1.	Mass and weight
2.	Weight of the object on Moon
3.	Thrust and Pressure
4.	Pressure in fluids
5.	Flotation of objects
6.	Archimede's principle
7.	Relative density

1.	Flotation of different objects Difficulty: easy	3
2.	Basic difference of mass and weight Difficulty: easy	3
3.	Acceleration due to gravity Difficulty: easy	1
4.	Properties of mass and weight Difficulty: easy	2
5.	Numerical based on pressure Difficulty: easy	4
6.	Weight of an object on the earth Difficulty: medium	4
7.	Comparison of weight of an object on the earth and the moon Difficulty: medium	4
8.	Pressure due to liquid column Difficulty: medium	2
9.	Pressure exerted by different objects Difficulty: medium	6
10.	Pressure on nail Difficulty: medium	3
11.	Calculation of height using the pressure difference between two points Difficulty: medium	1
12.	Relative density of a material Difficulty: medium	4
13.	Check whether the object will float or sink Difficulty: medium	6
14.	Find the mass of the displaced liquid Difficulty: hard	6
15.	Pressure exerted by a block Difficulty: hard	10

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Methodical recommendation

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