Third Grading Module 5 Heat
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Transcript of Third Grading Module 5 Heat
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Module 5:HEATARCHIE A. DURAN
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Have you experienced heat?
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Thermal Energya form of energypossess by all objectsit is due to the movement of particles making up an object
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what is heat???also a form of energy like thermal energy.
produced as thermal energy moves.
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heat energy production starts when thermal energy starts transferring.
heat energy production stops when thermal energy stops transferring.
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Thermometeran instrument used to measure the degree of hotness or coldness of an object.
measures temperature.
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High temperature
Low temperature
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Warm me Up,Cool me Down
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Until when do you think will heat
transfer continue to take place between
the containers?
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How does heat transfer?
ConductionConvectionRadiation
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Conductiontakes place between objects that are in contact with each other.
transfer of heat by vibration.happens in solids and liquids.
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The energy from the object of higher temperature is transferred to the other object through their particles that are close or in contact with each other.
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Then the particles receiving the energy will also transfer the energy to other places within the object through their neighboring particles.
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During this process, only the energy moves, not the matter itself.
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ExampleThink of a metal spoon put in a bowl of a hot champorado that you were about to eat when you suddenly remembered that you had to do first a very important task.
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heat conductivity
different materials transfer heat faster than the other.
good conductors-fast transferinsulators-slow or even prevent transfer
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Generally, metals are good conductors of heat.
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Convectiontransfer of heat by the movement of particles.
happens only in fluids (liquids and gases)
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Radiationrefers to the emission of electromagnetic waves
no particles are involvedcan take place even in vacuum.
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All objects emit and absorb radiation, known as thermal or infrared radiation.
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The hotter an object is, the more infrared radiation it emits.
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Think...
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Mental Exercise1. Energy possess by all objects due to the movement of particles.
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Mental Exercise2. An instrument use to measure the hotness or coldness of objects.
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Mental Exercise3. Give one unit use to describe how hot or cold an object is.
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Mental Exercise4. True or False?Cold objects transfer cold to warmer objects.
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Mental Exercise5-7. Give the three ways on how heat can be transferred.
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Mental Exercise8. Transfer of heat by circulating particles.
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Mental Exercise9. Type of heat transfer where no matter is needed.
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Mental Exercise10. Type of heat transfer where a spoon gets heated after being dip in hot water for few minutes.
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Mental Exercise11. Considered as good conductors of heat.
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Mental Exercise12. Type of energy produced as thermal energy moves.
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Mental Exercise13. Type of materials that are poor conductors of heat.
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14. ________________
15. ______________
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Mental Exercise
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Mental Exercise
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Mental Exercise