Thermal energy, heat, and thermodynamics

Edit Answers
123456789101112131415161718
Across
  1. 4. Transfer of thermal energy by direct contact
  2. 8. Two systems in thermal equilibrium with a third system must be in thermal equilibrium with each other
  3. 10. Amount of thermal energy needed to melt 1 kg of a substance at its melting point
  4. 11. Systems having the same temperature
  5. 12. The constant random motion of tiny particles, such as molecules
  6. 13. Transfer of thermal energy by converting some other energy into thermal energy when it is absorbed into matter
  7. 14. Amount of thermal energy needed to raise the temperature of an object one degree Celsius
  8. 16. A measure of disorder in a system
  9. 17. The sum of the kinetic energy of the random motion of particles
  10. 18. Amount of thermal energy needed to raise 1 g of a substance one degree Celsius
Down
  1. 1. Energy flows from an area of higher concentration to one of lower concentration (from hot to cold)
  2. 2. The law of conservation of energy
  3. 3. The amount of thermal energy added to or taken from a system
  4. 5. Standard (English) unit of heat, equivalent to 4.186 Nm at 15 degrees Celsius
  5. 6. Transfer of thermal energy through motion of a material that has thermal energy
  6. 7. It is impossible to reach absolute zero in a finite number of cooling steps
  7. 9. The theoretical point at which all energy will be in an unusable form
  8. 15. An engine that can do mechanical work by absorbing or discharging heat