What do all thermometers have in common?
A) digital display mode
B) having some mercury inside
C) work only when upside down
D) measure temperature by radiation
E) materials inside expand when heated

Question

Quizplus · Accepted Answer

All thermometers have materials inside that expand when heated. This expansion causes a change in pressure or other measurable attribute, which then allows the thermometer to measure the temperature of the substance being measured. Digital display mode and measuring temperature by radiation are specific types of thermometers, while having mercury inside and only working when upside down are not requirements for all thermometers.

What Do All Thermometers Have in Common