Question

Why is Mercury Used in Thermometers?

Answer 1

Step 1: Mercury Thermometers

1. A mercury thermometer consists of a glass tube filled with mercury and labelled with a standard temperature scale.
2. Temperature fluctuations cause the mercury to expand and shrink.
3. Mercury thermometers are employed in scientific investigations, as well as in homes and businesses.

Step 2: Mercury used in thermometers

1. Mercury is in liquid state at room temperature.
2. It is used in thermometers because it has a high coefficient of expansion, making it easier to move around in it when the temperature changes.
3. Mercury has a high boiling point, it may be used to detect greater temperatures as well.