Atmospheric Pressure
Chapter Name : Force And Pressure |
Sub Topic Code : 101_08_11_10_01 |
Topic Name : Atmospheric Pressure |
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Sub Topic Name : Atmospheric Pressure |
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Introduction
What is pressure? What is atmospheric pressure?
Pre-Requisites:
Introduction to Forces, Matter
Activity:
Take a rubber sucker. Press it on a porcelain plate. Does it stick to the plate? Can you explain why that happens?
Real Life Question:
How does a vacuum cleaner work?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Atmosphere | The envelope of air around us |
| Atmospheric Pressure | The pressure exerted by air (from atmosphere) |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Vacuum Cleaner | See how a vacuum cleaner cleans the surrounding. |
Real life uses :
Drinking your soft drink with the help of a straw works on air pressure. Vacuum cleaner also works on the difference in pressures
Places to visit :
Many children’s science museums have a set-up demonstrating the effects of variations in pressure.
Practical examples around us
| Examples | Explainations |
|---|---|
| Rubber Sucker attached to Soap Stand | These days soap stands have a rubber sucker attached to them which help stick to your bathroom wall. |
| Arrows with funnel shaped rubber ends | When you through them, they stick to the wall. Try to reason out what makes it stick. |
What you learn in Theory:
Air exerts pressure
What you learn in Practice:
The importance of air pressure, how it effects everyday life and variety of applications which brings this into picture.