Q3 science 7.........................................
- 2. SCIENCE 7 THIRD QUARTER- lc 1 (A) Matatag curriculum WITH FREE POWERPOINT PRESENTATION Describing What a Force Is
- 3. Describing What a Force Is CONTENT The learners learn that Scientists and engineers analyze forces to predict their effects on movement. LEARNING STANDARD The learners will identify that forces act between objects and can be measured. LEARNING COMPETENCY
- 4. By the end of the lesson, the 80 percent of the learners will be able to: 1. Define what a force is. 2. Explain how forces can affect the motion of objects. 3. Appreciate the role of forces in everyday life by answering the reflection of learning. OBJECTIVES
- 5. I. Activating Prior Knowledge Short Review Ask students to share their existing knowledge about forces. Encourage them to provide examples of forces they have experienced in their daily lives. I. Activating Prior Knowledge 1. What do you know about forces? 2.Can you give examples of forces that you have experienced in their daily lives.
- 6. 1. Define what a force is. 2. Explain how forces can affect the motion of objects. 3. Appreciate the role of forces in everyday life by answering the reflection of learning. B. Establishing Purpose of the Lesson 1. LESSON PURPOSE
- 7. B. Establishing Purpose of the Lesson 2. Unlocking Content Vocabulary: Match Type Activity CONTACT FORCE NON-CONTACT FORCE BALANCED FORCES Forces that are equal in strength and opposite in direction, resulting in no net force on an object. Forces that act on an object without physical contact, such as gravity or magnetism. Forces that act on an object through direct physical contact, such as friction or normal force. FORCE A push or pull that can cause an object to change its speed, direction, or shape.
- 8. A force is a push or pull that can cause an object to: Change its speed Change its direction Change its shape Introduction to Forces C. Developing and Deepening Understanding
- 9. Forces are interactions between objects that can make objects move, stop moving, or change the way they are moving. Forces can be contact forces, where objects touch, or non- contact forces, where objects don't need to be in direct contact. Introduction to Forces C. Developing and Deepening Understanding
- 10. Contact Forces These are forces that require direct physical contact between objects. Non-Contact Forces These are forces that can act on objects without them being in direct physical contact. Types of Forces C. Developing and Deepening Understanding
- 11. Contact Forces Examples include: Friction - the force that opposes the motion between two surfaces in contact. Types of Forces C. Developing and Deepening Understanding
- 12. Contact Forces Examples include: Tension - the force transmitted through a string, rope, or cable when it is pulled tight Types of Forces C. Developing and Deepening Understanding
- 13. Contact Forces Examples include: Normal force - the force exerted perpendicular to the surface when one object pushes against another. Types of Forces C. Developing and Deepening Understanding
- 14. Contact Forces Examples include: Muscular force is the force exerted by the muscles when they contract or shorten. It is the force that allows us to move our body parts and interact with the external environment. Types of Forces C. Developing and Deepening Understanding
- 15. Non-Contact Forces Examples include: Gravity - the force that attracts objects with mass towards each other. Gravitational force is responsible for bringing the items we toss into the air back to earth. When an object is resting on a surface it is exerting a downward force equal to its weight, and this downward force is known as Gravitational force. Types of Forces C. Developing and Deepening Understanding
- 16. Non-Contact Forces Examples include: Electrostatic Force- The electrostatic force is very similar to the gravitational force. The difference here is that gravitational force acts between masses and an electrostatic force acts between two charged bodies. Types of Forces C. Developing and Deepening Understanding
- 17. Direction Forces have a specific direction in which they act, either pushing or pulling an object. The direction of a force can change the object's motion. Magnitude The magnitude of a force refers to its strength or size. The greater the magnitude of a force, the greater its effect on an object. Force Characteristics C. Developing and Deepening Understanding
- 18. Magnitude The magnitude of a force refers to its strength or size. The greater the magnitude of a force, the greater its effect on an object. Magnitude of force refers to the size or strength of a force, regardless of its direction. It is a scalar quantity, meaning it only has a numerical value and does not indicate the direction in which the force is applied. The magnitude of a force is typically measured in units of Newtons (N) in the International System of Units (SI). For example:A 10 N force has a magnitude of 10 N, but we don’t know in which direction it is applied unless the direction is specified. If you push a box with a force of 20 N, the magnitude of the force is 20 N, but without knowing the direction (e.g., left, right, upward, or downward), we only understand how strong the force is. Force Characteristics C. Developing and Deepening Understanding
- 19. Objects Involved Forces always involve at least two objects - the object exerting the force and the object experiencing the force. The properties of these objects, such as their mass, surface area, and texture, can affect the force. Force Characteristics C. Developing and Deepening Understanding
- 20. The force of friction acts in the opposite direction of an object's motion. Demonstrating the force characteristics C. Developing and Deepening Understanding
- 21. The normal force acts perpendicular to the surface supporting an object. Demonstrating the force characteristics C. Developing and Deepening Understanding
- 22. The gravitational force between the Earth and an object is proportional to their masses. Demonstrating the force characteristics C. Developing and Deepening Understanding
- 23. Electromagnetic forces can act over large distances between charged particles. Demonstrating the force characteristics C. Developing and Deepening Understanding
- 24. LESSON ACTIVITY Activity 1. What Forces Can Do Objectives: At the end of the demonstration, the student should be able to describe what a force is and its effect on objects. Materials: soft rubber ball rubber band toy car C. Developing and Deepening Understanding
- 25. LESSON ACTIVITY Activity 1. What Forces Can Do Procedures: 1. Allow the students to describe the size and shape of the soft rubber ball. Push the rubber ball against a wall or a table. Ask them to observe and explain what happened to the ball. Pull the opposite ends of the rubber band and let them compare and contrast their observations. Guide them to answer the following questions: a. What happened to the ball when you pushed it against a wall or table? b. What is applied in the two instances? C. Developing and Deepening Understanding
- 26. LESSON ACTIVITY Activity 1. What Forces Can Do Procedures: 2. Place the toy car on the table or the floor. Ask the students how to make the toy car move. 3. Push the toy car. Let the students describe the motion of the toy car. Ask them how to make the toy car move faster, slower, stop, or even change direction. Let volunteer students demonstrate what they think will be able to change the state of motion of the car. Process their answers. C. Developing and Deepening Understanding
- 27. LESSON ACTIVITY Activity 1. What Forces Can Do Procedures: 4. Ask the students to summarize their learning through recitation or sharing. Highlight that the activities demonstrated what a force can do or the effect of forces on objects: ● A force can change the size and shape of an object. ● A force can make a stationary object move. ● A force can speed up, slow down, or stop a moving object. ● A force can change the direction of a moving object. C. Developing and Deepening Understanding
- 28. LESSON ACTIVITY Activity 1. What Forces Can Do Procedures: 5. Ask the students to describe a force and its effect on objects using their own words. 6. Examples of real-life situations where forces are applied can be given to students to allow them to identify the effects of these forces. For example, pushing a cart, kicking a soccer ball, modeling a lump of clay, the strong wind that moves a sailboat, or kicking hard an empty can used in a game of Tumbang Preso. C. Developing and Deepening Understanding
- 29. D. MAKING GENERALIZATION Learners’ Takeaways KWL Chart: Using the graphic organizer, the students will answer the L column or what they have learned about the lesson.
- 30. D. MAKING GENERALIZATION Reflection on Learning 1. In your own words, how would you define a force? 2. What are the three main effects that a force can have on an object? 3. Provide an example from your everyday life of a force causing an object to: a. Change its speed b. Change its direction c. Change its shape
- 31. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 1. A force is defined as a: a) Push or pull that can cause an object to change b) Measurement of an object's mass c) Invisible field that surrounds all objects d) None of the above
- 32. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 2. Which of the following is NOT an effect a force can have on an object? a) Change its speed b) Change its direction c) Change its shape d) Increase its temperature
- 33. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 3. Which of these is an example of a contact force? a) Gravity b) Friction c) Electromagnetism d) Both b and c
- 34. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 4. A non-contact force is a force that: a) Requires direct physical contact between objects b) Can act on objects without them touching c) Only exists in a vacuum d) None of the above
- 35. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 5. The direction of a force refers to: a) How strong the force is b) The path the object will take c) The way the force is pushing or pulling d) The objects involved in the force
- 36. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 6. The magnitude of a force is a measure of its: a) Direction b) Strength c) Duration d) Both b and c
- 37. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 7. The properties of the objects involved in a force, such as their mass and surface area, can affect: a) The direction of the force b) The magnitude of the force c) Whether the force is contact or non- contact d) All of the above
- 38. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 8. Which of the following would be considered a non-contact force? a) Tension b) Normal force c) Gravitational force d) Friction
- 39. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 9. If an object's speed increases due to a force, the force must be: a) Pushing in the direction of motion b) Pulling in the direction of motion c) Perpendicular to the direction of motion d) Both a and b
- 40. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING _________ 10. Understanding the characteristics of a force is important because it helps explain: a) How the force will affect an object's motion b) What type of force it is c) The objects involved in the force d) All of the above
- 41. E. EVALUATING LEARNING E. EVALUATING LEARNING E. EVALUATING LEARNING 1. a) Push or pull that can cause an object to change 2. d) Increase its temperature 3. b) Friction 4. b) Can act on objects without them touching 5. c) The way the force is pushing or pulling 6. b) Strength 7. d) All of the above 8. c) Gravitational force 9. a) Pushing in the direction of motion 10. d) All of the above ANSWERS KEY
- 42. Reference : •SCIENCE 7 LESSON EXEMPLAR GCSE Physics Revision “Resolving Forces” Retrieved from https://www.youtube.com/watch? v=8RI2_gJy0L0&list=PL9IouNCPbCxUrQkFLoPwB67nDbhw2NfAO&in dex=6 The Physics Classroom. Accessed from https://www.physicsclassroom.com/Physics-Interactives/Newtons- Laws/Free-Body Diagrams/Free-Body-Diagram-Interactive Ling, J.S., Sanny, J., & Moebs, B. (2016). University Physics Volume 1. Retrieved from https://openstax.org/details/books/university physics-volume-1 Hewitt, P.G. (2014). Conceptual physics. 12th Ed. Pearson DepEd. (n.d). Project EASE: Integrated Science I Module 7.