Question

C. We know that wood combusts with oxygen and heat. But, if we have two wooden shapes - one a
thin sheet and another thicker block of wood - and we apply heat to them, the thin sheet burns but
the block doesn't. Can you explain why this is so?​

Answer 1

Answer:

because the oxygen cannot reach in thicker block

Answer 2

Answer: In the case of the wooden sheet it burns quickly  but in case wooden block it doesn't burn quickly because when we burn outer part  the inner part keep on taking heat  and takes so long to burn.