Q. 1. (a) What does a Fire Brigade do when it arrives at a place where a building is on fire. (b) Describe one method of putting out a fire caused by burning wood or paper.

Answer

(a) When fire brigade arrives to the rescue, the fireman throws a strong stream of water on the building on fire, the burning material gets cooled down to below their ignition temperature and the fire is extinguished.

(b) Water extinguishes heat by cooling down the burning substance such as wood and paper. When water is thrown on these substances, it gets cooled below its ignition temperature and also stops burning.