What is the temperature reading on the fol-lowing Celsius thermometer? How many sig-nificant figures do you have in your answer?

The Celsius scale is a temperature measurement system where 0°C is the freezing point of water and 100°C is the boiling point at standard atmospheric pressure. It is widely used in scientific contexts and everyday life. Understanding how to read a Celsius thermometer is essential for accurately determining temperature in various experiments and applications.

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. When reporting measurements, it is crucial to express the result with the correct number of significant figures to reflect the precision of the measurement tool used.

Reading a thermometer involves identifying the level of liquid (usually mercury or colored alcohol) against a calibrated scale. The reading should be taken at eye level to avoid parallax error, and the temperature is typically read to the nearest division on the scale. Understanding how to accurately read a thermometer is vital for obtaining reliable temperature data in experiments.