Module 5:HEATARCHIE A. DURAN

Have you experienced heat?

Thermal Energya form of energypossess by all objectsit is due to the movement of particles making up an object

what is heat???also a form of energy like thermal energy.

produced as thermal energy moves.

heat energy production starts when thermal energy starts transferring.

heat energy production stops when thermal energy stops transferring.

Thermometeran instrument used to measure the degree of hotness or coldness of an object.

measures temperature.

High temperature

Low temperature

Warm me Up,Cool me Down

Until when do you think will heat

transfer continue to take place between

the containers?

How does heat transfer?

ConductionConvectionRadiation

Conductiontakes place between objects that are in contact with each other.

transfer of heat by vibration.happens in solids and liquids.

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.

Then the particles receiving the energy will also transfer the energy to other places within the object through their neighboring particles.

During this process, only the energy moves, not the matter itself.

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.

heat conductivity

different materials transfer heat faster than the other.

good conductors-fast transferinsulators-slow or even prevent transfer

Generally, metals are good conductors of heat.

Convectiontransfer of heat by the movement of particles.

happens only in fluids (liquids and gases)

Radiationrefers to the emission of electromagnetic waves

no particles are involvedcan take place even in vacuum.

All objects emit and absorb radiation, known as thermal or infrared radiation.

The hotter an object is, the more infrared radiation it emits.

Think...

Mental Exercise1. Energy possess by all objects due to the movement of particles.

Mental Exercise2. An instrument use to measure the hotness or coldness of objects.

Mental Exercise3. Give one unit use to describe how hot or cold an object is.

Mental Exercise4. True or False?Cold objects transfer cold to warmer objects.

Mental Exercise5-7. Give the three ways on how heat can be transferred.

Mental Exercise8. Transfer of heat by circulating particles.

Mental Exercise9. Type of heat transfer where no matter is needed.

Mental Exercise10. Type of heat transfer where a spoon gets heated after being dip in hot water for few minutes.

Mental Exercise11. Considered as good conductors of heat.

Mental Exercise12. Type of energy produced as thermal energy moves.

Mental Exercise13. Type of materials that are poor conductors of heat.

14. ________________

15. ______________

Mental Exercise

Mental Exercise

Mental Exercise