Kinetic Thoery and Conduction (Physics)
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- Created on: 09-06-15 20:20
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- Kinetic Theory and Conduction
- Explanation of the 3 states through Kinetic Theory
- Solids
- Strong forces of attraction hold the solid particles together and a regular and fixed position.
- Particles lack energy so they can only vibrate around their fixed positions.
- Strong forces of attraction hold the solid particles together and a regular and fixed position.
- Liquids
- There are weaker forces of attraction between the particles
- The particles are close together but they can move past each other and form irregular arrangements
- They have more energy than the solid particles - they move around randomly but at a low speed
- The particles are close together but they can move past each other and form irregular arrangements
- There are weaker forces of attraction between the particles
- Gasses
- There are almost no forces of attraction between the particles!.
- The particles have more energy than those in liquids and solids.
- They are free to move and travel in random directions at high speeds
- The particles have more energy than those in liquids and solids.
- There are almost no forces of attraction between the particles!.
- Solids
- Conduction of heat
- This occurs mainly in solids
- CONDUCTION OF HEAT ENERGY IS THE PROCESS WHERE VIBRATING PARTICLES PASS ON THEIR EXTRA KINETIC ENERGY TO NEIGHBOURING PARTICLES
- This process continues throughout the solid and gradually, some of the kinetic energy is passed all the way through the solid
- This causes a rise in temperature at the other side of the solid.
- This explains the increase of heat radiating from its surface
- This causes a rise in temperature at the other side of the solid.
- This process continues throughout the solid and gradually, some of the kinetic energy is passed all the way through the solid
- Usually conduction is faster in denser solids because the particles are closer together
- This means the particles will collide more often and pass energy between them
- Materials that have larger spaces between their particles so will therefore take longer to conduct heat energy
- These large spaces mean that these materials are insulators
- Materials that have larger spaces between their particles so will therefore take longer to conduct heat energy
- This means the particles will collide more often and pass energy between them
- METALS ARE GOOD CONDUCTORS BECAUSE OF THEIR FREE ELECTRONS
- The electrons are so free in metals that it makes them good conductors
- At the hot end of the metal, the electrons move faster and collide with other free electrons - This transfers energy
- Because the electrons can move freely, this is obviously a much faster way of transferring the energy through the metal than slowly passing it through neighbouring atoms
- This is why heat travels so fast through metals
- Because the electrons can move freely, this is obviously a much faster way of transferring the energy through the metal than slowly passing it through neighbouring atoms
- At the hot end of the metal, the electrons move faster and collide with other free electrons - This transfers energy
- The electrons are so free in metals that it makes them good conductors
- CONDUCTION OF HEAT ENERGY IS THE PROCESS WHERE VIBRATING PARTICLES PASS ON THEIR EXTRA KINETIC ENERGY TO NEIGHBOURING PARTICLES
- This occurs mainly in solids
- Explanation of the 3 states through Kinetic Theory
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