CBSE Class 7 Answered
(i) What is difference between conduction and convection?(ii) It is hotter at the same distance over the top of a fire than it is on the side of it. Why?
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
(i) In conduction, matter is not transported with heat; while in convection, matter is transported with the heat.
(ii) Convection takes more heat upwards. Towards the top, the air gets heated by convection. Therefore, the hand above the flame feels hot. On the sides, however, there is no convection and air does not feel as hot as at the top.
(ii) Convection takes more heat upwards. Towards the top, the air gets heated by convection. Therefore, the hand above the flame feels hot. On the sides, however, there is no convection and air does not feel as hot as at the top.
Answered by | 04 Jun, 2014, 15:23: PM
Concept Videos
CBSE 7 - Science
Asked by mayurkhanna2580 | 11 Dec, 2021, 22:45: PM
CBSE 7 - Science
Asked by halimamondal196 | 09 Jul, 2021, 11:13: AM
CBSE 7 - Science
Asked by himanshurawat38.7ga | 28 May, 2021, 20:53: PM
CBSE 7 - Science
Asked by rajiv.gupta262 | 29 Sep, 2020, 18:10: PM
CBSE 7 - Science
Asked by umrak305 | 10 Jul, 2020, 19:45: PM
CBSE 7 - Science
Asked by sajal2402 | 08 Oct, 2018, 18:17: PM
CBSE 7 - Science
Asked by kumarlalit288 | 15 Jul, 2018, 11:17: AM
CBSE 7 - Science
Asked by Topperlearning User | 14 May, 2015, 13:08: PM
CBSE 7 - Science
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
CBSE 7 - Science
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM