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PCEI Chapter 3

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  • PCM stands for:
    Potential Change Material
    Phase Change Material
    Phase Change Mechanism
  • Which property of PCMs is NOT mentioned as a consideration for use in incubators?
    Temperature plateau length
    Electrical conductivity
    Melting and freezing temperatures
  • During melting, thermal energy is stored as:
    Electrical
    Potential
    Kinetic
  • During freezing, stored energy release as:
    Thermal
    Potential
    Kinetic
  • PCMs with long plateaus:
    Cool quickly
    Heat longer
    Reheat fast
  • During melting, PCM molecules:
    Move more
    Move less
    Stop moving
  • What happens to the temperature during a temperature plateau?
    Increases
    Stays constant
    Decreases
  • Long plateaus in PCMs help to:
    Cool the babies quickly
    Heat the babies fast
    Keep the babies warm for a long period of time
  • During the temperature plateau, kinetic energy:
    Increases
    Will remain constant
    Decreases
  • The flat part of the heating graph shows:
    Cooling
    Temperature Plateau
    Max temperature
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