Take three big contaiiners like a bucket, a stainless steel pot. Put i

1.	Take three big contaiiners like a bucket, a stainless steel pot. Put ice mixed cold water in first pot A, normal water in second pot B warm water in third pot C. Now dip your left hand in pot A and the right hand in pot C. Now take out both the hands and put them immediately in pot B Fig.What do you feel? Whether the water in pot ‘B’ is hot or cold? Your left hand feels hot water and the right hand feels cold water. You are unable to decide touch is not reliable to know about the hotness or objects.Then, how do we find out how hot an object really is? The hotness or coldness of an object can be known by a characteristic called the temperature of an object. Temperature of an object is measured by a device called thermometer.we do not use the words cold or hot for an object. But we say that the object has high temperature or low temperature. The hotness or coldness of an object displays a comparative state of temperature.1. What do you feel?2. Whether the water in pot ‘B’ is hot or cold?3. What does the experiment performed in this activity shows (Proves)?4. How do we know, how much hot an object really is?5. What is temperature ?
Answer» 1. When both the hands are dipped in pot B containing normal water, left hand feels it hot while right hands feel it cool. 2. We are not able to decide whether water in pot B is hot or cold. Because at the same point of time our one hand feels it cool and other feels it hot. 3. This experiment shows that our sense of touch is not reliable to decide about the hotness or coldness of an object. 4. By measuring the temperature of an object by thermometer, we can find how hot an object is really. 5. The property of hotness or coldness of an object as compared to other objects is called temperature.

Take three big contaiiners like a bucket, a stainless steel pot. Put ice mixed cold water in first pot A, normal water in second pot B warm water in third pot C. Now dip your left hand in pot A and the right hand in pot C. Now take out both the hands and put them immediately in pot B Fig.What do you feel? Whether the water in pot ‘B’ is hot or cold? Your left hand feels hot water and the right hand feels cold water. You are unable to decide touch is not reliable to know about the hotness or objects.Then, how do we find out how hot an object really is? The hotness or coldness of an object can be known by a characteristic called the temperature of an object. Temperature of an object is measured by a device called thermometer.we do not use the words cold or hot for an object. But we say that the object has high temperature or low temperature. The hotness or coldness of an object displays a comparative state of temperature.1. What do you feel?2. Whether the water in pot ‘B’ is hot or cold?3. What does the experiment performed in this activity shows (Proves)?4. How do we know, how much hot an object really is?5. What is temperature ?

Answer»

1. When both the hands are dipped in pot B containing normal water, left hand feels it hot while right hands feel it cool.

2. We are not able to decide whether water in pot B is hot or cold. Because at the same point of time our one hand feels it cool and other feels it hot.

3. This experiment shows that our sense of touch is not reliable to decide about the hotness or coldness of an object.

4. By measuring the temperature of an object by thermometer, we can find how hot an object is really.

5. The property of hotness or coldness of an object as compared to other objects is called temperature.

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