CIE iGCSE Co-Ordinated Science P2.2.1 Thermal expansion of solids, liquids and gases Exam Style Questions Paper 2
Question
Equal volumes of a gas, a liquid and a solid are heated through the same temperature difference at constant pressure.
Which statement about their expansions is correct?
(A) The gas expands the most.
(B) The liquid expands the most.
(C) The solid expands the most.
(D) The gas, the liquid and the solid all expand by the same amount.
▶️Answer/Explanation
Ans: A
Question
What is meant by the sensitivity of a liquid-in-glass thermometer?
A. how quickly the thermometer shows a change in temperature
B. the accuracy of the thermometer
C. the amount of change in the length of the liquid column per degree Celsius temperature rise
D. the difference between the maximum and the minimum temperatures that the thermometer can measure
▶️Answer/Explanation
Answer: C
Explanation: Sensitivity refers to the change in the length of the liquid column per degree Celsius temperature rise. A more sensitive thermometer will show a larger change in the liquid column for a small change in temperature.