CK-12 Physical Science Concepts - For Middle School

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 5. Energy


FIGURE 5.27


FIGURE 5.28


Summary



  • Heat is the transfer of thermal energy between substances. Thermal energy is the kinetic energy of moving
    particles of matter, measured by their temperature.

  • Thermal energy always moves warmer to cooler substances until both substances have the same temperature.


Vocabulary



  • heat: Transfer of thermal energy between objects that have different temperatures.

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