Energy convertion - kinetic to heat

  • Context: High School 
  • Thread starter Thread starter karen_lorr
  • Start date Start date
  • Tags Tags
    Energy Heat Kinetic
Click For Summary

Discussion Overview

The discussion revolves around the conversion of kinetic energy to heat, exploring various contexts and mechanisms through which this transformation occurs. It touches on theoretical aspects as well as practical examples, including the behavior of ice crystals and the effects of friction in everyday scenarios.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant notes that kinetic energy on Earth typically converts to heat through friction in various scenarios, such as wind, driving cars, and walking.
  • Another participant humorously suggests a simple method to demonstrate kinetic energy conversion by rubbing hands together.
  • A detailed explanation is provided regarding the process of ice crystals falling through the air, where friction increases the kinetic energy of the outer sections, leading to heat generation and affecting the bonding of crystals.

Areas of Agreement / Disagreement

Participants generally agree on the concept that kinetic energy converts to heat through friction, but the discussion includes varying levels of detail and specific examples, indicating that multiple perspectives are present.

Contextual Notes

The discussion includes assumptions about the mechanisms of energy transfer and the specific conditions under which these processes occur, such as the behavior of particles during interactions and the definition of temperature in relation to kinetic energy.

Who May Find This Useful

This discussion may be of interest to those studying thermodynamics, energy conversion processes, or the physical properties of materials, particularly in the context of ice and crystal formation.

karen_lorr
Messages
63
Reaction score
0
Hi All

I am stuck with this (Not homework - jusrt writting a paper, well trying to anyway ;-)

I wondered in anyone could offer some advice or a link to a webpage with more info - I have googled this any can't find anything for days.

I am trying to discover how kinetic energy would be converted to heat.

EDIT
It's OK. Thanks for reading

I found the answer here in this forum

https://www.physicsforums.com/showthread.php?t=145105
 
Last edited:
Science news on Phys.org
"Just rub your hands together and blow" (variation on a well know film quotation)
 
Probably most kinetic energy on Earth gets eventually converted to heat through friction.

The wind blowing, a car driving, you walking, a fan spinning, a wave waving and whatever else you can think of. It all eventually stops. It might turn into various forms of energy but ultimately it mostly ends up as heat.
 
Many thanks to everyone who has taken the time to read and answer my questions. I really do appreciate it.

This is what I have come up with - (trying to explain one method of Ice (Ih) bonding).

I'm getting to the end of this now - 2 years work, :smile:.
From atomic structure I am now up the "then they fall out of the sky section"

The act of falling through the air may cause the outer sections to warm up (friction). As the crystal falls through the air it comes into contact with (and due to gravity, pushes aside) other particles, e.g. oxygen or nitrogen molecules, other crystals, etc. and, in doing so, the crystal’s own particles are moved/accelerated away from their original path. When particles are accelerated their kinetic energy, which object have due to their motion, is increased, of course this means that the other crystal’s energy is reduced, as it has been transferred (Conservation of Energy Law). Temperature is a measurement of the average kinetic energy of (in this case) the ice crystal – heat is the energy that is transferred from one object to another. So, the heat created by the Friction increases the depth of the Quasi Liquid Layer; as the crystal’s outer molecules now have more energy, they, consequentially, move/vibrate more. If the crystal comes into contact with another, the warmer outer areas (of both crystals) will, on contact, freeze again due to the heat/energy being dissipated throughout the now combined/enlarged crystal, as the average temperature (of the joined crystals) is below that which is required to freeze the whole. This process (crystals and crystal bunches bonding together) can continue until extremely relatively large snowflakes are formed.
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 23 ·
Replies
23
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 15 ·
Replies
15
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 5 ·
Replies
5
Views
732
  • · Replies 4 ·
Replies
4
Views
3K