Physics P1

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what is thermal (infrared) radiation?
It is the transfer of thermal energy (heat energy) by electromagnetic waves; no particles of matter are involved.
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What material emits more radiation? Explain why?
Dark matt surfaces. This is because it absorbs more radiation than light shiny surfaces because shiny surfaces are good electors of infrared radiation.
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What is keltic theory?
The theory that particles in solid, liquids and gases have different amounts of energy.
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Solid particles.
Have the least amount of energy. This is because the particles are not able to move but they do vibrate around a fixed point.
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Liquid particles.
The particles have energy as they have room to move around .
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Gas particles.
Gas have the most about of energy as they have more room to move around.
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Other cards in this set

Card 2

Front

What material emits more radiation? Explain why?

Back

Dark matt surfaces. This is because it absorbs more radiation than light shiny surfaces because shiny surfaces are good electors of infrared radiation.

Card 3

Front

What is keltic theory?

Back

Preview of the front of card 3

Card 4

Front

Solid particles.

Back

Preview of the front of card 4

Card 5

Front

Liquid particles.

Back

Preview of the front of card 5
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