1. ROOT WORDS Therm = heat, temperature

2. Endothermic Heated from within the body.

3. Exothermic Requires heat to be absorbed from outside of the body.

4. Therm A unit of heat equal to 1,000 great calories.

5. Thermal Related to heat or temperature.

6. Thermodynamic Caused or operated by heat that has changed into different forms of energy.

7. Thermograph A device that automatically writes down (records) changes in temperature.

8. Thermometer An instrument that measures temperature or heat.

9. Thermophile An organism that has adapted to living in very high temperatures (heat), such as bacteria or algae.

10. Thermos A container that is used to keep things warm such as your soup; a double walled container that keeps things warm.

11. Thermostat A device used to control the temperature.

12. The End!!! Take your grammar folders home nightly to study for your test on Friday!