What instrument is used to measure temperature?
AnswerA thermometer
A thermometer measures temperature; a barometer measures air pressure and a hygrometer humidity.
Science · Facts & stats
Temp facts & stats
7 fact-checked facts about temperature, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Heat naturally flows in which direction?
AnswerFrom hotter objects to colder ones
Heat flows on its own from warmer to cooler things until they reach the same temperature.
Going deeper
What is absolute zero on the Celsius scale?
Answer-273.15°C
Absolute zero, 0 kelvin, equals -273.15°C, the lowest temperature possible in theory.
At what temperature does pure water boil at sea level, in degrees Fahrenheit?
Answer212°F
Water boils at 212°F at sea level, which equals 100°C.
Normal human body temperature is roughly what?
Answer37°C (98.6°F)
Typical body temperature is around 37°C, though it varies a little between people and through the day.
Expert level
On Anders Celsius's original 1742 scale, water boiled at which value?
Answer0
Celsius's original scale ran backward, with 0 for boiling and 100 for freezing; it was flipped soon after.
At the level of atoms and molecules, what does temperature measure?
AnswerThe average kinetic energy of the particles
Temperature reflects how fast particles move on average, their average kinetic energy.
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