The liquid rises, indicating a temperature.
Thermal expansion refers to the increase in size of a substance as its temperature rises. In a thermometer, thermal expansion is utilized by materials such as mercury or alcohol to expand and contract based on temperature changes, allowing the thermometer to measure and display the temperature.
The metal undergoes thermal expansion
This is an example of thermal expansion, where the liquid in the thermometer expands as it is heated, causing it to rise within the tube.
"thermal expansion"
When a substance undergoes thermal expansion, its particles gain energy and move farther apart, causing the substance to increase in volume. This increase in volume is due to the increased average kinetic energy of the particles, leading to the substance taking up more space.
Thermal expansion of the fluid inside the thermometer.
Thermometers rely on thermal expansion because the liquid inside the thermometer (such as mercury or alcohol) expands and contracts with changes in temperature. As the temperature increases, the liquid in the thermometer expands, causing it to rise in the tube. Similarly, as the temperature decreases, the liquid contracts, causing it to fall in the tube. By measuring this expansion or contraction, the thermometer can accurately gauge the temperature.
through thermal expansion
A thermometer uses thermal expansion by measuring the expansion or contraction of a fluid (like mercury or alcohol) inside a narrow tube as the temperature changes. The increased volume of the fluid due to heat causes it to rise in the tube, providing a temperature reading.
The thermal expansion of mercury is proportional and linear to temperature.
thermal expansion
thermal expantion