Topic B Thermal Energy Transfers Vocab Review

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Across
  1. 6. A measure of the average kinetic energy of the particles in a substance.
  2. 9. ___ENERGY The total energy (kinetic + potential) of all the particles in a system.
  3. 12. An ideal object that absorbs and emits all radiation falling on it.
  4. 16. The unit of heat / energy.
  5. 17. The direct phase change from solid to gas without passing through the liquid state.
  6. 19. The absolute temperature scale used in physics, where 0 K is absolute zero.
  7. 21. The transfer of thermal energy through a substance without the movement of the substance itself.
  8. 22. The transfer of heat through a fluid by the movement of the fluid itself.
  9. 24. The total power radiated by a star or other body in the form of electromagnetic radiation.
  10. 26. The energy transferred between two bodies or systems due to a temperature difference.
  11. 27. HEAT Meaning "hidden." The energy absorbed or released during a phase change, without a change in temperature.
Down
  1. 1. The fraction of incoming radiation that is reflected by a surface.
  2. 2. HEAT The amount of thermal energy required to raise the temperature of 1 kg of a substance by 1°C (or 1 K).
  3. 3. A general term for the phase change from liquid to gas, which includes both boiling and evaporation.
  4. 4. The process of changing from solid to liquid when thermal energy is added (Melting).
  5. 5. Mass per unit volume, often used in conjunction with phase change and energy transfer.
  6. 7. CONSTANT The amount of solar energy received per unit area at the top of Earth's atmosphere per second.
  7. 8. The force per unit area exerted on a surface by particles colliding with it.
  8. 10. The transfer of energy through electromagnetic waves.
  9. 11. GAS A theoretical gas composed of many randomly moving point particles that interact only when they collide elastically.
  10. 13. The change from liquid to solid when thermal energy is removed.
  11. 14. ZERO The theoretical lowest possible temperature, where particles have minimum internal energy (0 K).
  12. 15. The change from gas to liquid as thermal energy is removed.
  13. 18. The amount of substance that contains as many particles as there are atoms in 12 g of carbon-12.
  14. 20. The direct change from gas to solid without becoming liquid.
  15. 23. A measure of an object's ability to emit infrared energy compared to a perfect blackbody.
  16. 25. The unit of power.