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Wednesday, November 23, 2022

Activity 11.8 Class 8 Science Chapter 11 Solution

Activity 11.8 Class 8 Science Force and Pressure

In this post, you will find NCERT Science Class 8 Chapter 11 Force and Pressure activity 11.8 with a complete explanation and conclusion. After reading this, you will be able to answer the questions based on the activity. After reading activity 11.7, you should go through the given activity.


 

You are suggested to study NCERT activity 11.8 class 8 science explanation with a conclusion so that you can attempt questions based on activity 11.8 Class 8 science.


Activity 11.8 Class 8 Science

 

   ·     Take a transparent glass tube or a plastic pipe.

   ·      The length of the pipe/tube should be about 25 cm and its diameter should be 5-7.5 cm.

   ·     Also take a piece of a thin sheet of good quality rubber, say, a rubber balloon.

   ·     Stretch the rubber sheet tightly over one end of the pipe.

  ·     Hold the pipe in the middle, keeping it in a vertical position as shown in the figure.

  ·     Ask one of your friends to pour some water into the pipe.

  ·     Does the rubber sheet bulge out?

  ·     Note also the height of the water column in the pipe.

  ·     Pour some more water.

  ·     Observe again the bulge in the rubber sheet and the height of the water column in the pipe.

  ·     Repeat this process a few more times.

  ·     Can you see any relation between the amount of the bulge in the rubber sheet and the height of the water column in the pipe?

      

Activity 11.8 Class 8 Science Chapter 11 Solution
 Activity 11.8 Class 8 Science Chapter 11 Solution

Observation and explanation 


When a little amount of water is poured into the column first time, the rubber balloon swells a little.

Now more water is poured into the column, and the balloon swells more than before.


As the level or height of the water column in the container increases, the pressure increases on the bottom that’s why the balloon bulge out.


It is clear that liquids exert pressure. This pressure depends upon the height of the liquid column in the container.


Conclusion 

This activity shows that liquids exert pressure on the surface.


Related Topics

1. Activity 11.9

2. Activity 11.7

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