Question

( Answer the following questions in two to three sentences each. )
( 1. What do you understand by the ‘flash point’of a fuel? )
( 2. What are some common uses of fire? )
( 3. What are the three main ways in which a fire can be controlled or put out ? )
( 4. Why does a burning candle go out when you blow on it ?)
( 5. How is fire a good servant ?)
( 6. How have we learnt to control fire ? )​

Answer 1

Answers :-

2. We use fire commonly for burning garbage near dumping ground , burning of stove for cooking food , burning of diya , etc .

3. We can control fire or put it of by flashing water on the fire, by blowing air from our mouth or by blowing air using a newspaper / book . If massive fire is needed to be controlled we need help of the fire brigade .

4. Fire litted on a burning candle is very little and light in mass , if we put force by blowing air with our mouth , the burning candle will go off .

Hope this answer helps you friend ♥️

Answer 2

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1. The 'flash point' of a fuel is a certain temperature at which any fuel begins to burn. It is also called the 'kindling temperature of the fuel'.

2. Fire has been used by humans in rituals in agriculture for clearing land, for cooking, generating heat and light, for signaling, propulsion purposes, smelting, forging, incineration of waste, cremation, and as a weapon or mode of destruction.

3. First way is to take away the fuel. Second way is to prevent oxygen from reaching it. Third way is to remove the heat.

4. Because of this, they push the oxygen and other molecules in the air out of the way as they sink down over the flame and candle. When oxygen is pushed away from the wick, it can't react with the wax anymore. This makes the flame go out.

5. Fire is a good servant. When kept under control fire helps us do many things. In most of our home we cook our food on fire.

We use fire to keep us warm during extreme winter. It is also used in generating electricity.

6. Every year we spend millions of rupees for fighting fires. We spend even large sum of money to find out ways to prevent fire from happening and going out of control. In the process we have learnt to control fire and use it for our betterment.

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