An unlit match is held near to an extremely hot Bunsen flame. Why does the match not get hot enough to light?
Ans: Air is a bad conductor of heat. Thus, there is not enough heat being transferred from the Bunsen burner to the unlit match.
Wrong Assumptions:
1. The flame is not hot enough.
2. The flame does not radiate any heat sideways.
3. A match can only be lit by striking it on a rough surface.
Ans: Air is a bad conductor of heat. Thus, there is not enough heat being transferred from the Bunsen burner to the unlit match.
Wrong Assumptions:
1. The flame is not hot enough.
2. The flame does not radiate any heat sideways.
3. A match can only be lit by striking it on a rough surface.
Erm, i think heat is radiated sideways ( as depicted in diagrams). Maybe not transferred by convection probably.
ReplyDelete-yuying
The flame does radiate heat sideways.
ReplyDeleteWrong Assumptions:
2. The flame does not radiate any heat sideways.
(look at the qu)