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.
Explain the difference between temperature and heat.
Explain why mercury is not used in thermometers for measuring very low temperatures.
Explain why the Kelvin scale does not have negative values.
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?
If the temperature of a gas is increased from 0°C to 100°C at constant volume, what happens to the pressure?
State one advantage and one disadvantage of using an alcohol thermometer.
State the principle of a thermocouple thermometer.
State the zeroth law of thermodynamics and explain its significance in temperature measurement.
