PIB Heat transfer

Name the main mechanisms of heat transfer

• Convection

• Conduction

• Radiation

• Thermal

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What's the boiling point of pure water at SAP?

• 100 ^oC

• 0 ^oC

• 273 K

• 373 K

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Conduction is

• Heat transfer by vibration of particles

• Heat transfer by bulk movement of particles

• Heat transfer through EM waves

• Heat transfer by collisions with neighboring particles

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Thermal insulators have

• high thermal conducting abilities

• very few free particles

• very few free electrons

• low thermal conducting abilities

When a substance expands with increasing temperature

• its particles become big

• the separation of its particles increases

• the speed of its particles reduces

• the speed of its particles increases

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Denser parts of a fluid

• sink

• float

• have higher particle to particle separation

• have lower particle to particle separation

Radiant power is proportional to

• surface area

• 4th power of the absolute temperature

• 4th power of the temperature

• temperature

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• A

• B

• C

• D

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• A

• B

• C

• D

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• A

• B

• C

• D

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NGSS.MS-PS3-3

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