A coal fire is burning in the bottom of a furnace, with a chimney above it. Air moves into the furnace from an opening at the bottom and up the chimney. Describe how the process of convection causes this air movement.

The air is heated by the coal fire. This causes the air to expand as the molecules move further apart. As a result the air becomes less dense. The less dense air rises. The cooler air from outside the chimney displaces the hot air. Above the chimney the hot air cools. The cool air falls. This process of convection is repeated.

JB
Answered by James B. Physics tutor

6754 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

How do I use equations of motion ('suvat') to find a missing quantity?


A ball of mass 1kg is rolled down a hill of height 10m. At the bottom it collides with another ball of mass 5kg. What speed does the second ball move away with? You can assume the collision between the balls is elastic.


What energy transfers are involved in you being able to move?


Describe how a crumple zone on a car reduces injury to the driver in a crash.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences