Thermometer is a tool used to measure the temperature of an object or substance. Thermometers have a scale that can be used to measure temperature. A scale is a series of marks and numbers that is used for measurement. The liquid in the thermometer rises as the temperature rises. The increase in kinetic energy causes the molecules to move farther apart. The liquid in the thermometer drop as the temperature drops. The decrease in kinetic energy causes the molecules to move closer together.
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