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Objectives A. Describe the three three methods of heat transfer. transfer. B. Distinguish in the given situation on how heat is transferred. C. Infer the conditions necessary for heat transfer to occur.
Subject Matter A. Topic: Methods Methods of Heat Heat Transfer Transfer B. Science Concept:
Heat is the amount of thermal energy being transferred between bodies high to low temperature. Methods of Heat Transfer of heat by direct contact Conduction- is a transfer of It occurs in solids. It is transfer of heat from hotter object to cooler object. Convection- is a transfer of heat through the movement of fluid particles It occurs in liquids and gases. It is a circular motion where in warm particles rise, cool particles fill the space bellow. is a transfer of heat as waves RadiationIt travels through matter or empty space. C. Science Processes: observing, classifying, inferring D. Instructional Materials: laptop and projector, cartolina and pictures E. Reference: University Physics with with Modern Physics Physics 13 th Edition by: Hugh D. Young and Roger A. Freedman pages: 570- 577 III.
Learning Procedure A. Daily Routines: Routines: Prayer and Checking of Attendance B. Motivation: Summer season, many Filipino go to beaches to ease the heat felt by the body. How heat is transferred from the surrounding to the body?
C. Discussion: Discussion about heat and the three methods of heat transfer. D. Activity and Analysis: Direction: Read the following situations and answer the guide questions. 1. There is a hot water in a cup and somebody put a metal spoon in the cup. After few minutes, what will happen to the metal spoon? Guide a. b. c.
Questions: Which method of heat transfer is applied to the given situation? What is conduction? What is the condition necessary for conduction to occur?
2. The freezer compartment is put at the top, warm air inside the refrigerator, rises up, the cooler air inside the freezer region, sinks down, keeping the whole fridge cool. Guide a. b. c.
Questions: Which method of heat transfer is applied to the given situation? What is convection? What is the condition necessary for conduction to occur?
3. One way of preserving the fish in Pangasinan is by putting salt and letting it dried under the sun. Guide a. b. c.
Questions: Which method of heat transfer is applied to the given situation? What is radiation? What is the condition necessary for conduction to occur?
E. Abstraction: 1. What is heat? 2. How heat is transferred? F. Application: cooking dishes like adobo via conduction, knowledge of convection for heat survival, generating electricity through solar energy via radiation IV.
FRAYER MODEL: Write what is needed in the box. DEFINITION:
WHAT MEDIUM IS NEEDED TO TRANSFER THE HEAT?
WHAT IS THE CONDITION FOR THIS METHOD OF HEAT TRANSFER TO OCCUR?
Advance reading about electricity on page 688 of University Physics with Modern Physics 13 th Edition by Hugh D. Young and Roger A. Freedman.
Prepared by: Ohmark V. Veloria
Conduction: cooking dishes like adobo, there should be direct contact between the heat and the food to cook. Convection: cooked and improvised heater conduction Hilo sa init ng room second floor Solar power plant radiation