Fire- Friend and Foe Class 7 Worksheet English Honeycomb

Q.1. What does a damp blanket do?
(a) It brings down the temperature
(b) It cuts the supply of oxygen
(c) It cuts the supply of fire extinguisher
(d) It cuts the supply of carbon dioxide

Correct options is (b)
Small fires can be put out or ‘smothered’ with a damp blanket or a sack. This stops oxygen from reaching the burning material and the fire gets extinguished.

Q.2. Fire is a bad master if it is ________.
(a) made by electricity
(b) made by coal
(c) under control
(d) uncontrolled

Correct options is (d)
Fire is a good servant but a bad master. It is useful as long as it is under control. It becomes a bad master if it is uncontrolled.

Q.3. What are the three things used to make a fire? Answer according to the story Fire- Friend and Foe.

The three things used to make fire are fuel, oxygen and heat.

Q.4. What has been the idea of fire from time to time?

Early man was ignorant about the existence of fire. They ate raw birds and animals. The fire was invented in the stone age. The fire was lighted by striking stones. Now, the foodstuff came to be cooked or boiled on fire. The people worshipped fire as a deity. Lightning and volcanoes produced fire and frightened man. The destructive fire caused awe and fear in the human heart. In the advanced ages of science, fire is known as the result of a chemical reaction. It occurs at the fuel's flash point. The combination of oxygen, carbon, and hydrogen with the fuel results in the release of energy (heat). Heat and light are known as fire. It is a good servant.

Q.5. Read the following passage carefully and answer the questions that follow each of them:
Early man didn’t know what fire was, but he must have seen the damage it could cause. He must have watched lightning and volcanoes long before he began to use fire himself. Fire was powerful and dangerous, and he was frightened.
The fire might have puzzled early man, but we today know that fire is the result of a chemical reaction. When the oxygen in the air combines with carbon and hydrogen in fuel, a chemical reaction takes place. The energy in the form of heat and light is released in this process. This is what we call fire.
(i) How did early man notice the damage caused by fire?
(ii) What three things are needed to make fire?
(iii) Which two elements are present in fuel?
(iv) What happens when oxygen combines with carbon and hydrogen in a fuel?
(v) Find the word from the above passage that means the same as to afraid.

(i) The early man noticed the destructive power of lightning and the volcanoes long before he began to use fire himself.
(ii) Three things needed to make fire are oxygen, fuel, and heat.
(iii) Carbon and hydrogen make-up fuel.
(iv) When the oxygen in the air combines with carbon and hydrogen in a fuel, a chemical reaction takes place and energy in the form of heat and light is released.
(v) The word is frightened.

Q.6. What should not be sprayed on an electrical fire or an oil fire to put it off?
(a) Water
(b) Carbon dioxide
(c) Blankets
(d) Sand

Correct options is (a)
 Water is not a feasible way of putting out an oil fire or an electrical fire. The oil will always float on the top of the water and continue to burn. This is highly hazardous as water can flow rapidly carrying the burning oil and spreading the fire. The person who sprays water on an electrical fire might receive an electric shock and be killed.

Q.7. What should be used to put off an electrical fire?
(a) Carbon dioxide extinguisher
(b) Gas
(c) Ice
(d) Water

Correct options is (a)
A carbon dioxide extinguisher is the best thing to fight an electrical fire. Water cannot be used on fires caused by electrical appliances.

Q.8. ________ is a material that is burnt to produce heat or power. (Fire: friend and foe)
(a) Fuel

(b) Fluid
(c) Foam
(d) Foul

Correct options is (a)
Fuel refers to materials that are burnt to produce heat and power. They are combustible substances such as coal, cooking gas, and petroleum.

Q.9. What are the uses of fire?

Fire is useful in multiple things, for example, we use it for cooking our food and to warm our homes in winter etc.

Q.10. How do the firefighters put out fires?

The firefighters work with special equipment, like a fire engine, a hose spraying water, and fire extinguishers to put out fires. They are also known as fire brigades and are highly-trained, and skilled people knowing first aid as well.