Make a match. A group B group 1. Fluid a. Higher pressure 2. Blunt knife b. Atmospheric Pressure 3. Sharp needle c. Specific gravity 4. Relative density d. Lower pressure 5. Hecto Pascal e. Same pressure in all directions

1-b, A fluid that is kept in a container exerts its pressure equally in all directions at a point within the fluid. 2-d, A blunt knife can exert less pressure than a sharp knife to cut the vegetables and so can not cut easily. 3-a, A sharp needle can exert more pressure as it is having less contact surface area. 4-c, The property density is very useful in deciding the purity of the substance. The relative density of a substance is expressed with respect to the density of water. 5-b. The air pressure at the sea level is called atmospheric pressure. Air pressure decreases as one goes up in height from the sea level. Atmospheric pressure is specified in the units mbar or hecto pascal (h Pa). A group B group 1. Fluid e. Same pressure in all directions 2. Blunt knife d. Lower pressure 3. Sharp needle a. Higher pressure 4. Relative density c. Specific gravity 5. Hecto Pascal b. Atmospheric Pressure

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General Science>Chapter 3 - Force and Pressure>Use your brain power

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8th Maharashtra Board

IMPORTANT

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While pulling a bucket from a well, the bucket full of water immersed fully in water appears to weigh less than when it has been pulled out of water. Why?

Important Questions on Force and Pressure

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8th Maharashtra Board

IMPORTANT

General Science>Chapter 3 - Force and Pressure>Use your brain power

Take a long rubber band and cut it at one point. At one of its ends tie a clean washed stone or a $50 g$ weight as shown in the figure. Explain the observations in this experiment according to the Archimedes Principle.

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MEDIUM

8th Maharashtra Board

IMPORTANT

General Science>Chapter 3 - Force and Pressure>Exercises>Q 2

Make a match.

A group	B group
1. Fluid	a. Higher pressure
2. Blunt knife	b. Atmospheric Pressure
3. Sharp needle	c. Specific gravity
4. Relative density	d. Lower pressure
5. Hecto Pascal	e. Same pressure in all directions