The Kelvin scale is important in science because it starts at absolute zero, providing a direct measure of thermal energy. It is used in scientific calculations and studies involving temperature.
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Mercury thermometers are being phased out due to the toxicity of mercury. If broken, mercury can pose serious health and environmental risks.
Liquid-in-glass thermometers work by using the expansion and contraction of a liquid, like mercury or alcohol, inside a glass tube. The liquid’s level rises or falls as temperature changes.
Absolute zero is the lowest possible temperature, 0 Kelvin or -273.15°C, where molecular motion theoretically ceases entirely. It is a fundamental concept in thermodynamics.
The Kelvin scale is an absolute temperature scale starting at absolute zero (0 K). It is commonly used in scientific research and calculations.