Q: Why is it easy to convert Celsius to Kelvin?
A: Converting Celsius to Kelvin is straightforward because both scales use the same size of the degree, making the temperature unit conversion a simple addition of 273.15.
Q: How can you convert Celsius to Fahrenheit?
A: To convert Celsius to Fahrenheit, you can use the formula (C * 9/5) + 32 = F, where C is the temperature in degrees Celsius and F is the temperature in degrees Fahrenheit.
Q: What makes the Fahrenheit scale less intuitive for some people?
A: The Fahrenheit scale can be less intuitive because its reference points were set based on historical decisions rather than universal principles. Additionally, its temperature unit conversion formulas involve more complex calculations compared to the Celsius-Kelvin conversion.
Q: How are temperatures measured using thermal expansion?
A: Thermal expansion is a common method for measuring temperature. As most materials expand with rising temperature, containers or tables with calibrated markings can translate changes in size (volume or length) into temperature readings.
Q: What are some effects of temperature used to measure it with electrical properties?
A: Effects like the Hall effect, voltage drop, and Seebeck effect (used in thermocouples) are employed to measure temperature. These effects depend on the mobility or drift velocity of electrons in a material, which is influenced by the vibration of its atoms and molecules due to temperature changes.
Q: How do scientists measure the outer temperature of stars?
A: The outer temperature of stars is measured using the Stefan-Boltzmann law and Wien's law. These laws relate the energy and color of light emitted by an object at a certain temperature, allowing scientists to determine the temperature of celestial objects, including black holes, based on their emitted light.