TEMPERATURE Temperature Is a measure of how hot or cold an object is compared to another object. Indicates that heat flows from the object with a higher temperature to the object with a lower temperature. Is measured using a thermometer. Temperature Scales Fahrenheit, Celsius, and Kelvin. Reference points for the boiling and freezing points of water. Temperature a measure of how hot or cold something is • • • • • • • • • Celsius = a unit of temperature in the metric system Water freezes at 0° C. Water boils at 100° C. Normal body temperature is 37° C Room temperature is 21° C. Kelvin = another unit of temperature in the metric system. The lowest possible temperature is 0 Kelvin (-273 ° C). This is Absolute Zero. To convert from Celsius to Kelvin: K = C + 273° Body Temperature 37+ degrees Celsius 98+ degrees Fahrenheit Body temperatures above 40 °C (104 °F) are life-threatening. At 41 °C (106 °F), brain death begins, and at 45 °C (113 °F) death is nearly certain. Internal temperatures above 50 °C (122 °F) will cause rigidity in the muscles and certain, immediate death.