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EXPANSION AND CONTARCTION....

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lola lalo

on 15 October 2013

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Transcript of EXPANSION AND CONTARCTION....

EXPANSION AND CONTRACTION...
EXPANSION
As the average energy of particles increases,the space between the particles increase.
They expand (increase their volume) as the temperature increases.
is when it increases in temperature it increase in its substance.
CONTRACTION
As the average energy of particles decrease,the spaces between the particle decreases.
they contract(decrease their volume) as the temperature decreases.
EXPAND AND CONTRACT OF SOLID...
Solid can become longer or shorter depending on the temperature (average energy of the particles)

EXPAND AND CONTRACT OF GASES
When the particles in a gas are heated, their average energy increases and they need more room,so they expand.

When the particles in a gas are cooled,the volume decreases or contract,because the particles need less room.

Under extremely high temperature conditions (like the temperatures inside the Sun, particles can be split into what makes them up(electrons and ions)

This creates a fourth state of matter called plasma.
EXPAND AND CONTRACT OF LIQUID
When the particles in a liquid are heated, their average energy increases and they need room,so they expand.

the particles in a liquid are cooled, the volume decreases,or contracts, because the particles need less room.

this is demonstrated by the liquid used in a thermometer. As the liquid expands and contract ,it moves up and down the inside tubing( the bore) of the thermometer.
THE GAP OF RAILWAYS TRAINS
This will happens if not gaps in railways train.
video of expansion and contraction..
video....
Full transcript