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Across 1. the study of a relationship 4. amount of heat that is needed to raise the temperature (2 Words) 5. measure of kinetic energy 6. transfer by electromagnetic waves 7. transfer of thermal energy 9. something that flows from a higher temperature to a lower temperature 10. most common heating system used today (2 Words) 11. a device that converts heat into work (2 Words)

Down 1. energy of ALL particles (2 Words) 2. a slow moving material 3. solar heating systems use theses (2 Words) 8. transfer of thermal energy in FLUID form