Latent Heat

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14 Terms

1
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Limits of Motion

(1)

<p>(1)</p>
2
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Energy Input

(2)

<p>(2)</p>
3
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Melt

(3)

<p>(3)</p>
4
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Evaporate

(4)

<p>(4)</p>
5
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Freeze

(5)

<p>(5)</p>
6
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Condense

(6)

<p>(6)</p>
7
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Energy Output

(7)

<p>(7)</p>
8
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Heating Curve

A graph of temperature v/s heat added showing sloped segments

9
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Temperature changes

What do the sloped segments in the graph of temperature v/s heat added represent.

10
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Phase changes

What do the flat segments in the graph of temperature v/s heat added represent.

11
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Q = mcΔT

Mathematical representation of the sloped segments in the graph of temperature v/s heat added

12
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Q = mL

Mathematical representation of the flat segments in the graph of temperature v/s heat added

13
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Dew Point

The temperature at which air becomes saturated with water vapor and condensation begins for a given humidity.

14
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Evaporative Cooling (Sweating)

  • When sweat evaporates, it absorbs heat from the skin (Q = mL_v),

  • Cooling the body

  • More energy is needed to evaporate water below 100°C than at 100°C because molecules have less thermal energy.