Encircle the letter of the correct answer. 1. Who introduced the absolute temperature scale? Anders Celsius b. Gabriel Fahrenheit William Rankine d. William Thompson 2. Which expands the greatest when heated at the same temperature? Gas b. Solid c. Liquid d. All expand equally 3. Temperature describes the of molecules in a substance. Potential energy b. Kinetic energy Thermal energy d. Gravitational force 4. Which of the following is NOT a unit of temperature? FAHRENHEIT b. CELSIUS CALORIE d. KELVIN 5. Why does liquid inside the thermometer rise when put in hot water? The liquid is boiling b. The liquid is evaporating c. The liquid gains heat from the hot water causing it to expand d. The liquid loses heat from the hot water causing it to contract