Revision_Thermal physics

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Across
  1. 4. opposite of conductors
  2. 7. The force of attraction between similar kinds of molecules
  3. 9. the energy required to raise the temperature of 1 kg of the substance by 1 °C.
  4. 10. Metal objects heat up easily because their ______ are low.
  5. 11. it is measured in hertz.1 Hz is one vibration per second
  6. 12. The empty space between the molecules is called _____ space.
  7. 14. speed that is close to speed of sound
  8. 15. The volume of a fixed mass of gas is inversely proportional to its ______.
Down
  1. 1. the surface of a liquid behaving like a stretched membrane due to the attracting forces from all of its neighbouring molecules.
  2. 2. energy is transferred through a material from a warmer place to a cooler place without the material itself moving.
  3. 3. طاقة متحركة
  4. 5. Change in the size of a substance due to heating
  5. 6. energy is transferred through a material from a warmer place to a cooler place by the movement of the material itself.
  6. 8. There is no molecular motion at ______ zero.
  7. 13. anything that occupies space and has mass.