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GCSE physics - kinetic theory and conduction
Karten in diesem Stapel (8)
- 1kinetic theory describes how particles move in solids, liquids and gases.The energy an object has because of its movement is called kinetic energy.
- 2—solids
strong forces of attraction hold particles in fixed regular arrangement - 3—Liquids
weaker forces of attraction
close together but move past each other, irregular arrangements. more energy than solids so move in random directions at low speeds
- 4—gases
almost no forces of attraction, have more energy so are free to move in random directions and high speeds
- 5—when you heat a substance you give the particles more kinetic energy KE therefore vibrate and move faster causing melting and boiling
- 6CONDUCTION OF HEAT IS THE PROCESS WHERE VIBRATING PARTICLES PASS ON THEIR EXTRA KINETIC ENERGY TO NEIGHBORING PARTICLES.
- 7—This process continues throughout the solid and some of the KE is passed all the way through causing a rise in temperature at the other side.
- 8—
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- GCSE AQA CGP revision guise page 13
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