COT 2025

Most Essential Learning Competencies Explain how heat causes the internal energt of a system increase. Demonstrate that heat can do work by constructing a model..

The students will be divided into 4 groups then each group will read the article below and brainstorm with their members to come up with the answers for the given guide questions..

Activity 3 Start up and Run! Objective: At the end of the activity, you should be able to describe the stages of heat engine which dernonstrate change of therrnal into Inechanical work. Directions: Analyze the repetitive rnechanisrn Of heat engine, four-stroke diesel engine, to run a car. Do tasks 3.1 and 3.2. Write your answers on your answer sheet. Four-stroke cycle exhaust vatve spar•« intake iS Üawn rntxu.are peston dowrt. exhaust p.shes out Exrned.

Intake. Compression. TASK 3.1 Refer to below. CYCLE STROKE (Intake, Compression, Power, Exhaust) 1. 2. 3. 4. the picture of Four-stroke cycle engine above. Complete the table MOVEMENT OF PISTON (moves upward or moves down) 5. 6. 7. 8. WHAT HAPPENED TO THE MIXTURE OF GASES? Filled in the cylinder Compressed into fractional amount Ignited by the spark plug Expelled out by the exhaust pipe TASK 3.2 The following are descriptions of each stage in a four-cycle stroke diesel engine. Write the number corresponds to the cycle stroke being described: 1 for Intake, 2 for Compression, 3 for Power and 4 for Exhaust. 1. An ignitable mixture of gasoline vapor and air is drawn into the cylinder. 2. The mixture is compressed as the piston ascends with both valves closed. 3. As the end of the previous stroke is approached, the mixture of gasoline vapor and air are ignited by an electric spark. Expansion of the burned gas happens which moves the piston down. 4. The ascending piston forces the spent products of combustion through the open exhaust valve..

Activity 2 How rnuch energy did I gain? Objective: At the end Of the activity, you should be able to calculate the change in internal Of a systern xvhen heat is added into it- Directions: Study the sarnple problerns below-. After analyzing the vvord problerns, answ•er the problern tasks. Write your ansvvers on your ansvver sheet. SAMPLE PROBLEM: PROBLEM 1: If 120 J of is added to a systern by heat no external wrork wras done, by hour rnuch verill the therrnal enerß' Of a system is raised? = 120 J (arnount of heat flotv to GIVEN: Q UNKNOWN: FORMULA: the systen-z) O (zero, no tvork done) = ? (change in internal AU energy in systern) AU Q W SOLUTION: (substitute the value frorn given) AU = (120 J) — (0) AU = 120 J ANSWER: AU = 120 J ( 120 rninus O) PROBLEM 2: If 120 J of energy is added to a systern by heat that does 40 J Of external wrork, by hos.v rnuch therrnal enerß" Of a systern is raised? 120 J (arnount of heat _f70tv to GIVEN: Q the systerz) = 40 J (tvork done by systern) KNOWN: = ? (change in internal AU energy in systern) FORMULA: AU Q W SOLUTION: (substitute the value frowz given) AU = (120 J) — (40 J) (120 minus 40) AU = 80 J ANSWER: AU = 80 J.

200J. 0J. Activity 2 How rnuch energy did I gain? Objective: At the end Of the activity, you should be able to calculate the change in internal Of a systern xvhen heat is added into it..

Activity 4 My DIY Steam Engine! Objective: At the end of the activity, you should be able to construct a simulation model of steamboat engine that demonstrate heat can do work. Materials: Ipc colored paper or bond paper Ipc thumbtack Ipc pencil with rubber eraser glue whistling kettle with boiling water on stove (ask the assistance of your guardian) Procedure: 1. Prepare the materials. 2. Construct your paper pinwheel. Follow the picture guide below..

Activity 4 My DIY Stearn Engine!. *If you cannot follow the picture guide, go to this link: https: / / bit.ly /2RH914s NOTE: Make sure that the paper pinwheel can freely rotate if you blow air on it. If not, adjust the hole where the thurnbtack is inserted into the pinwheel. 3. Prepare the whistling kettle. Make sure that stearn of water vapor is spouted frorn the kettle. Do not turn off the stove to allow continuous flow of stearn. 4. Prepare the setup of your DIY steam engine: Place your paper pinwheel on the strearn of water vapor and observe what will happen..

Steam. Kettle. Activity 4 My DIY Steam Engine!. Guide Question: 1. What makes the paper pinwheel spin? 2. What material in the setup on your DIY steam engine represent the thermal energy source? 3. What was done on the paper pinwheel as thermal energy from water vapor or steam converted into mechanical energy in a spinning paper pinwheel? 4. How will you relate the activity setup in the mechanism of a steamboat propelling in water?.

APPLICATION: The class will be divided into four groups and each group will give an appliance or a machine and answer the following: Name of the machine/appliance. Explanation of how heat is used to do work in the machine (e.g., turning water into steam to power a turbine). The type of work done (e.g., producing mechanical motion, generating electricity, etc.). Energy conversion process (e.g., heat → mechanical energy). Benefits and challenges of using heat in this way..

Check Your Understanding Study the illustration beloxv. Fill in all the blank spaces writh CORRECT w•ord found on the box belovv to cornplete the thought Of each sentence in the paragraph. Write your ans&vers on your ansxver sheet. Does Geothernmal Energy Work? 1. Heat frorn the Earth's crust creates Stearn 2. Stearn rotates turbine 3. Generator produces electricity ATE R 4. Water is injected back into the ground 7, G E N E R ATOR RESERVOIR.

Heat. Rotate. Check Your Understanding Study the illustration beloxv. Fill in all the blank spaces writh CORRECT w•ord found on the box belovv to cornplete the thought Of each sentence in the paragraph. Write your ans&vers on your ansxver sheet. Does Geothernmal Energy Work? 1. Heat frorn the Earth's crust creates Stearn 2. Stearn rotates turbine 3. Generator produces electricity ATE R 4. Water is injected back into the ground 7, G E N E R ATOR RESERVOIR.

d. c. Post—test Directioxxs: Read arid analyze each qi-aestiorl careftxlly- the letter of the correct arxsxver- on you.xr sheet- does a engine propel a boat using therr-nal Thernxal energy is reduced by the engine to avoid overheati-ng- Thernxal is absorbed by the ex•gine to create posver to do rnecharxical is rnultiplied by the engine to create powver to do rnecharxical Thernxal energy is converted ixxto rnecharxical energy by the engirxe to do rxxecha-rxic.al svork- 2- 3- 4- 5- therrnal raised in a systern 90 J of is added into it by heat and 30 J Of external wrork done? b- 60 J c. 120 J d. 1800 J of the follovving is TRUE heat is absorbed by an object? The ternperatuxre of object decreases- b- The thernxal of the object irmcreases. c- The of particles of the object increases. d- The ax-nouxnt of internal in the object rernains the saxne. W" hich Of the follosving speeds up the rnotion Of the particles Of object ilicreases its internal energy? a. Put the object over the Place the object in a cool area- c. Put the object an ice bath- d- Place the object in a dark cold area is the CORRECT order of cycle ixx forxr—stroke diesel engine?.

[image] Reflection Directions: Complete the table by answering the questions. Write your answers on your answer sheet. What are the things/ concepts that niarked on you in doing this module? What activity did you enjoy the rnost? What topic/ idea you would like to ask that caught your attention in this module?.

Momentum work edison GIF - Find on GIFER. SCORE + 50 = GRADE.