Class 7 Exam > Class 7 Questions > Why smoke always rises up?
Start Learning for Free
Why smoke always rises up?
Most Upvoted Answer
Why smoke always rises up?
Why Does Smoke Always Rise Up?
Smoke is a mixture of gases and airborne particles. When we light a fire, the fuel undergoes combustion and produces smoke. Smoke is less dense than air, which causes it to rise upwards. There are several factors that contribute to this phenomenon:
Buoyancy
The hot gases produced by a fire are less dense than the surrounding air. This causes the gases to rise upwards due to the principle of buoyancy. Buoyancy is the upward force exerted by a fluid on an object immersed in it. In this case, the fluid is air and the object is the smoke.
Temperature
The temperature of the smoke is higher than the surrounding air. This causes the molecules in the smoke to move faster and spread apart. As a result, the smoke becomes less dense than the surrounding air and rises upwards.
Wind
Wind can also cause smoke to rise upwards. When there is a breeze, the wind can blow against the side of a building or a hill. This creates an area of low pressure behind the obstacle, which can cause the smoke to rise upwards.
Air Pressure
Air pressure can also contribute to the upward movement of smoke. When the air is heated by a fire, it expands and becomes less dense. This causes the air pressure to decrease, which can create a pressure difference between the inside and outside of a building. This pressure difference can cause the smoke to rise upwards.
Conclusion
In conclusion, smoke always rises upwards due to the principle of buoyancy, temperature differences, wind, and air pressure. Understanding these factors can help us predict the movement of smoke and take appropriate measures to prevent fires and reduce the risk of smoke inhalation.
Community Answer
Why smoke always rises up?
Smoke is hotter than air. So it also lighter than air that is why smoke always moves up.
Attention Class 7 Students!
To make sure you are not studying endlessly, EduRev has designed Class 7 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 7.
|
Explore Courses for Class 7 exam
|
|
Similar Class 7 Doubts
Top Courses for Class 7View all
Why smoke always rises up?
Question Description
Why smoke always rises up? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Why smoke always rises up? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why smoke always rises up?.
Why smoke always rises up? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Why smoke always rises up? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why smoke always rises up?.
Solutions for Why smoke always rises up? in English & in Hindi are available as part of our courses for Class 7.
Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free.
Here you can find the meaning of Why smoke always rises up? defined & explained in the simplest way possible. Besides giving the explanation of
Why smoke always rises up?, a detailed solution for Why smoke always rises up? has been provided alongside types of Why smoke always rises up? theory, EduRev gives you an
ample number of questions to practice Why smoke always rises up? tests, examples and also practice Class 7 tests.
|
|
Explore Courses for Class 7 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup