Does a waterfall have a higher temperature at the bottom ?

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Discussion Overview

The discussion revolves around the temperature of water at the bottom of a waterfall, specifically whether it is higher due to kinetic energy considerations. Participants explore the relationship between kinetic energy and temperature, as well as the implications of Earth's motion on this relationship.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant states that increasing the kinetic energy of water could lead to a higher temperature, referencing the equation KE = (2/3)kT.
  • Another participant questions the assumption that water at the bottom of the waterfall is warmer, suggesting that there may be reasons to reconsider this claim.
  • It is proposed that there are two possibilities for why the water might be warmer at the bottom, although these possibilities are not detailed.
  • Participants discuss the definition of temperature in relation to molecular movement and kinetic energy, implying that factors like Earth's rotation and translation should also be considered in this context.
  • A later reply asserts that the previous day's discussion provided a correct answer to the question, suggesting that the current inquiry may not be valid.

Areas of Agreement / Disagreement

Participants express differing views on whether the water at the bottom of the waterfall is indeed warmer, with some questioning the validity of this claim. The discussion remains unresolved, with no consensus reached.

Contextual Notes

There are unresolved assumptions regarding the definitions of temperature and kinetic energy, as well as the influence of external factors like Earth's motion on the temperature of falling water.

DLeuPel
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So we have that KE= (2/3)kT , meaning that if I increase the kinetic energy of water, it will become hotter, I searched it and it says that at the bottom of the waterfall, the water is slightly hotter. Of course I imagine that when they refer to the bottom, they refer to a part of the waterfall that is still falling. If this is true, then why don’t we consider the KE of Earths rotation, translation, etc ?
 
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DLeuPel said:
Of course I imagine that when they refer to the bottom, they refer to a part of the waterfall that is still falling.

I suspect that isn't correct
Consider why it might be so
Edit
Actually, thinking about it, there's 2 possibilities for why it would be warmer at the bottom ...
 
davenn said:
I suspect that isn't correct
Consider why it might be so
Edit
Actually, thinking about it, there's 2 possibilities for why it would be warmer at the bottom ...
This question is related with the definition of what is temperature regarding the movement of molecules. This of course translates to kinetic energy but that would mean that the Earths rotation, translation, etc should be considered as KE
 
Last edited by a moderator:
DLeuPel said:
This question is related with the definition of what is temperature regarding the movement of molecules. This of course translates to kinetic energy but that would mean that the Earths rotation, translation, etc should be considered as KE
This question was correctly answered for you yesterday in your other thread -- what you are saying is not correct. Please just accept the answer instead of starting a new thread to try to make the answer go away. Thread closed.
 
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