On Application of Specific Heat Capacity of Solids

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Discussion Overview

The discussion revolves around the application of specific heat capacity in understanding temperature differences between sand and water, particularly in beach environments. Participants explore concepts related to thermal properties of materials and their implications for comfort in different climates.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions why hot sand feels warm while water remains cold, suggesting a personal experience with temperature differences.
  • Another participant explains that sand has a low specific heat capacity, allowing it to heat up and cool down quickly compared to water, which has a high specific heat capacity and retains heat longer.
  • A participant expresses gratitude for the clarification on specific heat capacity and its relevance to everyday experiences.
  • It is noted that only the surface of the sand heats up, while water's motion helps distribute heat more evenly.
  • Some participants mention that water temperature can vary significantly based on geographic location, with examples from Hawaii and Alaska.
  • One participant argues that the high specific heat of water contributes to a more stable temperature in coastal areas, making living conditions more comfortable.

Areas of Agreement / Disagreement

Participants generally agree on the role of specific heat capacity in temperature regulation between sand and water, but there are varying opinions on the implications of this for comfort in different locations. The discussion remains unresolved regarding the broader impacts of these thermal properties on living conditions.

Contextual Notes

Some assumptions about the depth of heating in sand and the motion of water are mentioned but not fully explored. The discussion does not resolve the complexities of how specific heat capacity interacts with other environmental factors.

franz32
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Hello again!

I'm not sure if this is difficult but I believe that everyone have experienced this... I can't explain it... =) Sorry about that.

Anyway, here's my problem...

At noon, when the sand in the beach is already hot, why does the water still feel cold? Early in the night when the cold wind blows, why can you swim comfortably?
Why is it more comfortable to live in places near large bodies of water?

I hope someone could help me here...
 
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He's right, you did answer your own question.

The sand is hot because it takes very little energy to change the temperature of sand. Sand also cools off quickly. When day changes to night, the sand quickly changes its temperature until it is the same temperature as the air.
The water takes lots of energy to heat up. When night time comes, there is so much energy stored in the water that it takes a long time for the water to reach equilibrium with the air.
 
Thanks!

Hello! Ambitwistor, specific heat is the amount of heat
needed to raise the temperature of a unit mass of a substance by one degree. I know what it means, but I don't really get how is this applied to simple events...

Well, now I know... =) Thank you very much for your hints and guides. =) Thank you too, ShawnD.
 
You're also only heating the surface of the sand to a depth of a few inches. With the sea, the motion of it ensures that the heat energy is dipersed more efficiently.
 
Of course, depending on where you are, the water will always be warm (Hawaii) or always be cold (Alaska).
 
Originally posted by franz32

Why is it more comfortable to live in places near large bodies of water?
It is because the specific heat of water is high, there cannnot be high differences in temperature at the place. So protecting the homeostasis is easier.
 
Originally posted by NateTG
Of course, depending on where you are, the water will always be warm (Hawaii) or always be cold (Alaska).
...or dirty (New Jersey).
 

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