Temperature and Thermometers
Physics ⇒ Heat and Thermodynamics
Temperature and Thermometers starts at 7 and continues till grade 12.
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A platinum resistance thermometer has a resistance of 100 Ω at 0°C and 139 Ω at 100°C. Assuming linear variation, what is the resistance at 50°C?
A temperature of 25°C is equivalent to how many Kelvin?
A thermocouple produces a voltage of 2.5 mV when the junction is at 100°C and the reference is at 0°C. If the voltage is proportional to the temperature difference, what voltage will it produce at 50°C?
A thermometer reads 20°C in a room. If the same thermometer is placed in a mixture of ice and water, what temperature should it read?
Convert 212°F to Celsius.
Describe how a resistance thermometer measures temperature.
Describe the working principle of a gas thermometer.
A thermocouple produces a voltage of 2.5 mV when the junction is at 100°C and the reference is at 0°C. If the voltage is proportional to the temperature difference, what voltage will it produce at 50°C?
A thermometer reads 20°C in a room. If the same thermometer is placed in a mixture of ice and water, what temperature should it read?
If a thermometer is miscalibrated and reads 2°C higher than the actual temperature, what will it read when the actual temperature is 25°C?
Which of the following is a fundamental thermometric property?
(1) Length of a column of liquid
(2) Mass of a substance
(3) Volume of a solid
(4) Color of a gas
Which of the following is NOT a fixed point used in the calibration of thermometers?
(1) Melting point of ice
(2) Boiling point of water
(3) Room temperature
(4) Triple point of water
Which of the following is NOT a property used for temperature measurement?
(1) Thermal expansion
(2) Change in electrical resistance
(3) Change in color
(4) Change in mass
Which of the following is the correct order of increasing temperature?
(1) 0°C, 273 K, 32°F
(2) 32°F, 0°C, 273 K
(3) 273 K, 0°C, 32°F
(4) 32°F, 273 K, 0°C
A clinical thermometer typically measures temperatures in the range of ________ °C to ________ °C.
The temperature at which both the Celsius and Fahrenheit scales read the same value is ________.
The triple point of water is defined as exactly ________ K.
True or False: The boiling point of water decreases as atmospheric pressure decreases.
True or False: The Kelvin scale is an absolute temperature scale.
True or False: The temperature of a body is a measure of the average kinetic energy of its molecules.
