Topic B Thermal Energy Transfers Vocab Review

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