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Physics:Heat https://docs.google.com/document/d/1GK19LXZTU9nizB5bEMXSDZ7a…
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Solids
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They cannot be compressed or squashed
The particles are close together and have no space to move into
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Liquids
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They cannot be compressed or squashed
The particles are close together and have no space to move into
Expansion and Convection
the kinetic energy of an object increases as the object temperature increases, the object will expand as the kinetic energy increases and contract as the kinetic energy decreases.
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How?
The particles are vibrating more as the temperature increases, they are pushing their next door neighbours apart, so the distance between them increases which means the whole volume of the particles increases, it expands however the particles itself did not expand and the particles did not get bigger.
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Atmospheric convection currents can be set up by local heating effects such as solar radiation (heating and rising) or contact with cold surface masses (cooling and sinking). Such convection currents primarily move vertically and account for many atmospheric phenomena, such as clouds and thunderstorms.
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Radiation
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When two objects reach the same temperature as each other, we say they are in Thermal Equilibrium.
All hot objects eject (give out) energy in the form of waves. The waves are called infrared -waves radiation and are similar to light waves. We feel it as heat.