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Physics
The following figure shows a copper washer. Explain, giving reasons, whether the following characteristics of the washer increase, decrease, or remain the same when it is heated.
(a) Internal diameter
(b) Volume
(c) Mass
(d) Density
(e) External diameter
Chapter: [5] Heat and Energy
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Name the instrument used for measuring the temperature of a body.
Chapter: [5] Heat and Energy
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What is the principle used in a thermometer?
Chapter: [5] Heat and Energy
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Who designed the first thermometer?
Chapter: [5] Heat and Energy
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What do you mean by calibration of a thermometer?
Chapter: [5] Heat and Energy
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What is a clinical thermometer?
Chapter: [5] Heat and Energy
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State three properties of a liquid which make it suitable to be used in a thermometer.
Chapter: [5] Heat and Energy
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State two disadvantages of using mercury as a thermometric liquid.
Chapter: [5] Heat and Energy
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The body temperature of a healthy person is 98.4°F. Find the corresponding temperature on the Celsius scale.
Chapter: [5] Heat and Energy
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The temperature of a body rises through 1°C. What is the corresponding rise on an absolute scale?
Chapter: [5] Heat and Energy
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Name the temperature scale used in the SI system.
Chapter: [5] Heat and Energy
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How is the size of a degree defined on the Celsius scale?
Chapter: [5] Heat and Energy
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Convert -15°C on the Fahrenheit scale.
Chapter: [5] Heat and Energy
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What is absolute zero on the Celsius Scale?
Chapter: [5] Heat and Energy
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The temp. of two bodies differ by 1°C. What is the difference on the Fahrenheit scale of temperature?
Chapter: [5] Heat and Energy
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Who invented Celsius scale of temperature?
Chapter: [5] Heat and Energy
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Who invented the Fahrenheit scale of temperature?
Chapter: [5] Heat and Energy
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Name two liquid thermometers that are commonly used.
Chapter: [5] Heat and Energy
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Name two animals which are able to increase their body temperature in summers and decrease their body temperature in winters.
Chapter: [5] Heat and Energy
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Name the CGS unit of heat. Define it.
Chapter: [5] Heat and Energy
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