Temperature Plateau

A temperature plateau is:

• a period during which temperature remains constant.

• a sudden drop in temperature.

• a gradual increase in temperature.

• a fluctuation in temperature.

Tags

NGSS.MS-PS1-4

During a temperature plateau, what happens to the kinetic energy and temperature of a substance?

• Kinetic energy increases, temperature remains constant

• Kinetic energy decreases, temperature remains constant

• Kinetic energy remains constant, temperature increases

• Kinetic energy remains constant, temperature remains constant

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

PCMs have longer plateaus than most substances because:

• they have a higher specific heat capacity.

• they undergo a phase change over a range of temperatures.

• they have a lower thermal conductivity.

• they are denser than most substances.

Tags

NGSS.MS-PS3-4

What happens to the temperature of a PCM when it begins to melt?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Explain the concept of a temperature plateau during the phase change from solid to liquid.

• A temperature plateau occurs when the temperature remains constant as a solid melts into a liquid.

• A temperature plateau is when the temperature increases rapidly during the phase change.

• A temperature plateau is when the temperature decreases during the phase change.

• A temperature plateau is unrelated to phase changes.

Tags

NGSS.MS-PS1-4

During the cooling of a PCM, what happens to the potential energy stored during melting?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Fill in the blank: During the temperature plateau, the temperature and kinetic energy of the PCM remain ________.

• constant

• variable

• fluctuating

• increasing

Tags

NGSS.MS-PS1-4

The process of phase change from liquid to solid in PCMs is known as:

• Melting

• Freezing

• Evaporation

• Condensation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The effect of PCMs with long temperature plateaus on energy transfer to the baby is:

• Increases energy transfer

• Decreases energy transfer

• Has no effect on energy transfer

• Varies depending on other factors

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following statements is true about PCMs with long plateaus?

• A) They transfer energy for shorter periods.

• B) They take longer to reheat.

• C) They are always in the incubator.

• D) They have no effect on temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4