When we rub two flint stones together; we got them to heat up and to ignite a heap of dry leaves in the form of

Question

When we rub two flint stones together; we got them to heat up and to ignite a heap of dry leaves in the form of (A) chemical energy (B) sound energy (C) heat energy (D) electrical energy

Tardigrade Admin · Accepted Answer

One of the greatest technical achievements of human kind occurred, when we discovered how to ignite and control fire .
We learnt to rub two flint stones together (mechanical energy), got them to heat up and to ignite a heap of dry leaves (chemical energy), which then provided sustained warmth.

Q. When we rub two flint stones together; we got them to heat up and to ignite a heap of dry leaves in the form of

chemical energy

sound energy

heat energy

electrical energy

One of the greatest technical achievements of human kind occurred, when we discovered how to ignite and control fire . We learnt to rub two flint stones together (mechanical energy), got them to heat up and to ignite a heap of dry leaves (chemical energy), which then provided sustained warmth.

One of the greatest technical achievements of human kind occurred, when we discovered how to ignite and control fire .
We learnt to rub two flint stones together (mechanical energy), got them to heat up and to ignite a heap of dry leaves (chemical energy), which then provided sustained warmth.