HEAT TRANSFER.pptx for grade 9 students

ppt

1. HEAT TRANSFER

2. a ACTIVITY 1: WORD HUNT R A D I A T I O N C E C A G K A H D O O F F D E G E H R I N S E G N A H C E T V N U D R H P T S C E A I T J V Y O I U C R M S B F D C S D T T J Q X Z U Z T N I Y W A V E H U I O O O P W S Q E R Y C N

3. a ACTIVITY 1: WORD HUNT R A D I A T I O N C E C A G K A H D O O F F D E G E H R I N S E Y N I H C I T V N U D R H P T S C E A I T J V Y O T U C R M S B F D C S D T T J Q X Z U Z I N I Y W U V E H U I O O O P W S Q E R Y C N

4. ACTIVITY 2: PUTUKAN NA The players will be group into 2, each with 5 members. And they have to pop the balloon on the lap of another player using their buttocks Each teams tries to pop 5 balloons in the fastest time running back and forth, landing on the other members lap to pop the balloon. This Photo by Unknown Author is licensed under CC BY-NC Each balloon has a corresponding JUMBLED LETTERS written on a strip of paper inside. As they pop the balloon, they have to REARRANGED THE JUMBLED LETTERS. If they can't answer, they can ask for help from other group members Each group will be given 3 minutes to pop all the balloons. The fastest team who will finish the game will be the winner and will receive a prize MECHANICS

5. ACTIVITY 3: VIDEO ANALYSIS GUIDE QUESTIONS What is heat? How do heat flows? What are the three modes of heat transfer?

6. Refers to the energy possessed by an object or system due to the movement of particles within the object or the system THERMAL ENERGY

7. HEAT TRANSFER Heat is a form of energy that transfers between objects or regions due to temperature differences. It flows from hotter to cooler areas until thermal equilibrium is reached HEAT This Photo by Unknown Author is licensed under CC BY-NC-ND

8. CONDUCTION CONVECTION GH RADIATION 3 MODES OF HEAT TRANSFER This Photo by Unknown Author is licensed under CC BY This Photo by Unknown Author is licensed under CC BY

9. CONDUCTION Heat is transfer through direct contact Most effective in solids

10. CONVECTION Method of heat transfer through the circulation of liquid and gas transfer of energy by the rising or sinking of matter due to density differences

11. RADIATION The heat transfer through electromagnetic wave

12. GROUP ACTIVITY GROUP 1 MATERIALS NEEDED CANDLE METAL ROD TIMER PROCEDURE Light the candle or turn on the small heat source. Hold it under one end of the metal rod so that the flame or heat is directly touching the metal. As the other end of the metal rod heated, gently hold the other end and record your observation Make sure to record how long it takes for the metal rod to get warm

13. GROUP ACTIVITY GROUP 2 MATERIALS NEEDED HEAT SOURCE WATER GLASS CONTAINER STIRRING ROD PROCEDURE FILL THE GLASS CONTAINER WITH SMALLAMOUT WATER PLACE THE CONTAINER ON A HEAT SOURCE OBSERVE THE MOVEMENT OF THE WATER AS IT HEATED RECORD THE OBSERVATION

14. GROUP ACTIVITY GROUP 3 MATERIALS NEEDED HEAT SOURCE PROCEDURE PLACE YOUR HAND NEAR THE HEAT SOURCE AND EXPLAIN WHAT WILL HAPPEN

15. DIRECTION: CHOOSE THE LETTER OF THE CORRECT ANSWER Which statement best describes convection? Heat transfer through direct contact of molecules b. Heat transfer through electromagnetic waves c. Heat transfer through the movement of fluids d. Heat transfer through a vacuum 2. Which statement accurately describes the relationship between temperature and heat transfer? a. Higher temperature always results in faster heat transfer b. Higher temperature always results in slower heat transfer c. Temperature and heat transfer are independent of each other d. The relationship between temperature and heat transfer depends on the materials involved

16. DIRECTION: CHOOSE THE LETTER OF THE CORRECT ANSWER 3. When ice cubes are added to a glass of water, the ice cubes melt because: a. Heat is transferred from the ice cubes to the water b. Heat is transferred from the water to the ice cubes c. Heat is radiated by the ice cubes d. Heat is absorbed by the ice cubes from the air 4. A metal spoon left in a pot of boiling water gets hot mainly due to: Conduction b. Convection c. Radiation d. Absorption 5. Which of the following statements best describes why heat conduction is more accurate in solid mediums compared to fluids? Solid molecules have higher energy levels, promoting faster heat transfer b. Solid molecules are closely packed, facilitating direct heat transfer through atomic collisions c. Solid mediums have a higher coefficient of thermal expansion, enhancing heat conductivity d. Solid mediums exhibit turbulent flow, increasing the efficiency of heat conduction

17. ASSIGNMENT: DIGITAL CONCEPT MAP DIRECTION: Choose one type of heat transfer (conduction, convection, or radiation) that you would like to focus on for this assignment. Use an online concept mapping tool like Coggle, Canva or Popplet to create a digital concept map illustrating the chosen type of heat transfer. Start with the central concept (e.g., "Conduction") and branch out to include subtopics such as definition, examples, and real-life applications. Include text, images, and arrows to connect related concepts and demonstrate relationships. Populate your concept map with relevant information about the chosen type of heat transfer. This could include: Definition and explanation of the heat transfer process, examples of heat transfer in everyday life, diagrams or illustrations to visually represent the process. For the presentation, prepare a brief presentation to explain your digital concept map to the class. Use your concept map as a visual aid to guide your presentation, highlighting key concepts and connections.

18. ASSIGNMENT: DIGITAL CONCEPT MAP Clarity and organization of the digital concept map (30%) Accuracy and completeness of content (25%) Creativity and engagement of presentation (20%) Ability to explain concepts effectively during the presentation (15%) Overall demonstration of understanding of heat transfer concepts (10%)