Heat and Temperature
Heat and Temperature
Heat is the transfer of energy from a hot body.
The sense of touch can be used to understand the degree of hotness or coldness of something. But the sense of touch is not reliable and cannot be always used to say how much hot anything is. Moreover, using the sense of touch can be risky in case of something very hot. Thus, hotness of anything is measured in terms of Temperature in reliable way. To measure temperature a device called Thermometer is used.
Conversion from one scale to another:
K= C + 273
Difference between Heat and Temperature
|
Heat |
Temperature |
|
It is a form of energy. |
It is the degree of hotness or coldness of a body. |
|
Heat causes a change in the temperature of a body. |
It is the effect of heat. |
|
It is measured in joules or calories. |
It is measured in degree Celsius or degree Fahrenheit. |
Conversion of temperature from one scale to another scale.
Whatever may be the scale of temperature used form experiments it is concluded that,
i.e.,
Illustration: For a faulty thermometer upper and lower points are found to be and
respectively. What is the correct temperature if this thermometer reads
Solution:
Temperature is measured by ________ . | |||
| Right Option : B | |||
| View Explanation | |||
The measure of how hot or cold something is _____________ | |||
| Right Option : C | |||
| View Explanation | |||
Heat energy is caused by difference in _________________. | |||
| Right Option : C | |||
| View Explanation | |||
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