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Temperature and heat

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  • 1. 6.0 TEMPERATURE AND HEAT BY: MOHD ZAMRI HAMID
  • 2. TEMPERATURE AND HEAT Flares, prominences, sunspots, and solar wind are not limited to our Sun. Other stars also portray such magnetic phenomena. Photo by SOHO (ESA & NASA)
  • 3. TEMPERATURE AND HEAT Flares, prominences, sunspots, and solar wind are not limited to our Sun. Other stars also portray such magnetic phenomena. Photo by SOHO (ESA & NASA)
  • 4. TEMPERATURE AND HEAT Arctic sea ice melt at record level
  • 5. 6.1.1 The objective is to define the Physical Quantity that measure DEGREE OF HOTNESS of a body SI Unit = KELVIN (K)
  • 6. How to measure Temperature? THERMOMETER
  • 7. 6.1.1 The objective is to define the ENERGY (Therma) that FLOWS naturally from HOT body to COLD body SI Unit = JOULE (J)
  • 8. 6.1.2 The objective is to describe the process of
  • 9. 6.1.2 The objective is to describe the process of CONDUCTION Transfer of heat by the direct contact of particles of matter Examples: Gold, Copper, Iron, Aluminum
  • 10. 6.1.2 The objective is to describe the process of CONVECTION Up and Down movement of liquid and gases caused by heat transfer. Examples:, warmer water, Hot air balloon
  • 11. 6.1.2 The objective is to describe the process of RADIATION Transfer of heat by Electromagnetic waves through space Examples: Cell Phone wave, Sunlight, Nuclear
  • 12. 6.1.3 The objective is to define
  • 13. 6.1.3 The objective is to define
  • 14. 6.1.4 The objective is to apply the concept and formula in solving problems Question 1 How many joules of heat are required to raised the temperature of 750 kg of zinc to raise its temperature from 25’C to 275’C? (specific heat capacity of zinc is 390 J / kg ‘C)
  • 15. 6.1.4 The objective is to apply the concept and formula in solving problems Question 2 150 g of water is at 140’C. How much heat must be removed to lower the water to 75’C ? (Specific heat capacity of water is 4.20 kJ / kg’C
  • 16. 6.1.4 The objective is to apply the concept and formula in solving problems Question 3 A 0.23 kg sample of Aluminum is provided with 4500 joules of heat energy. What will be the change in temperature of this sample?
  • 17. CONCLUSION * TEMPERATURE is a Physical Quantity that measure DEGREE OF HOTNESS of a body. SI Unit = KELVIN (K) * HEAT is ENERGY (Therma) that FLOWS naturally from HOT body to COLD body. SI Unit = JOULE (J) •HEAT TRANSFER methode is refer to CONDUCTION, CONVECTION & RADIATION •HEAT CAPACITY formula is Q = mc Δϴ
  • 18. NEXT TOPIC ? THERMAL EQUILIBRIUM PAGE 66 – MODUL BB101 ENGINEERING SCIENCE third edition
  • 19. REFERENCES: MODUL BB101 ENGINEERING SCIENCE Third Edition Internet – tagging for: Temperature, Heat, Sun Phenomena, Volcano, Iceberg, conduction, convection, radiation, heat capacity, specific heat capacity,
  • 20. THE END thank you 6.0 TEMPERATURE AND HEAT BY: MOHD ZAMRI HAMID