Heat is a form of energy that flows from hot to cold. Temperature is the measure of hotness/coldness. Unit: Celsius (ยฐC), Kelvin (K), Fahrenheit (ยฐF). Thermometer measures temperature. Clinical thermometer: 35-42ยฐC range (for human body). Laboratory thermometer: -10 to 110ยฐC. Body temperature: 37ยฐC (98.6ยฐF) is normal.
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