Science-8-Q1-W1-D2.pptxbshsjsnsvskskkahg

lesson

1. JERICK E. AQUINO Student Teacher

2. Father God, As we start this new day for new learning, we ask for Your guidance. Lead us all the way. May You let us see through Your eyes, listen through Your ears, and speak with Your Mouth. Be with us as we explore the world. Give us the heart to love and be kind to one another. Please watch over all our teachers, children, and families. In Jesus’ name. Amen

3. NON-CONTACT FORCES

4. Activity 1 Non-Contact Forces Forces where objects are not in contact with each other.

5. Activity 1 2 EXAMPLES GRAVITATIONAL FORCE MAGNETIC FORCE

6. Activity 1 GRAVITATIONAL FORCE The Force that attracts object towards the earth.

7. NORMAL FORCE

8. GRAVITATIONAL FORCE

9. 2kgs

10. MAGNETIC FORCE The force that is exerted on what we call a field of attraction or repulsion.

11. Activity 1 2 Types Of non-Contact Forces GRAVITATIONAL FORCE MAGNETIC FORCE

12. Activity 1 CONTACT FORCES NON-CONTACT FORCES Applied Force Friction Force Normal Force Tension Force Gravitational Force Magnetic Force

13. FORCE

14. BALANCED FORCES

15. BALANCED FORCES Are those which are of opposite directions and equal in magnitude

16. MAGNITUDE DIRECTION The amount of force exerted Where the force is moving towards

17. 5N 5N BALANCED FORCES

18. UNBALANCED FORCES Are those which are of opposite directions and unequal in magnitude

19. 50N 200N

20. NET FORCE

21. NET FORCE = 0 BALANCED

22. NET FORCE > 0 UNBALANCED

23. FNET = EF Net Force Sum of the forces in the same line of action

24. + (POSITIVE) Direction of force and corresponding signs - (NEGATIVE)

25. (+) POSITIVE (-) NEGATIVE (-) NEGATIVE (+) POSITIVE

26. 900N 1200N

27. FA FB

28. -900N +1200N

29. 300

30. 5N -5N -5N 5N

31. Positive (+) = force is directed to the right Negative (-) = force is directed to the left Forces directed horizontally and vertically cannot be added

32. A box is at rest on the floor when Michael and James saw I, the decided to push the box from both sides to see who among them is stronger to make it move. Michael who is on the left exerts a magnitude of 150N and James who is on the right exerts 200N. What will be the net force?

33. A box is at rest on the floor when Michael and James saw I, the decided to push the box from both sides to see who among them is stronger to make it move. Michael who is on the left exerts a magnitude of 150N and James who is on the right exerts 200N. What will be the net force? FNET = FMICHAEL + FJAMES

34. FNET = FMICHAEL + FJAMES FNET = 150N + (-200N)

35. Lets say we have a bottle of water on the top of the table. The normal force is 5N and the gravitational force pulling it downward is also 5N. What will be the net force? Try it on your own! FNET = FG + FN FNET = -5N + 5N FNET = 0

36. What will happen if gravity don’t exist?

37. GENERALIZATION Summarize what you have learned for today

38. D. Magnetic Force B. Friction Force A. Applied Force 1. Which of the following is an example of Non-contact force QUIZ TIME! C. Tension Force

39. B. Negative A. Positive 2 . If the force is directed to the right, what algebraic sign should be used when adding forces? QUIZ TIME! C. Both positive and negative

40. D. Tension B. Gravitational A. F riction 3. Which of these forces pulls an object towards the earth? QUIZ TIME! C. Applied

41. B. Unbalanced A. Balanced 4. If the net force is not equal to zero, the forces are________. QUIZ TIME!

42. D. Magnetic Force B. Unbalance d Forces A. Balanced Forces 5. Which of the following refers to the sum of the existing forces in the same line of action QUIZ TIME! C. Net Force

43. D. Line of Action B. Point of Application A. Magnitude 6 . It refers to how strong force is QUIZ TIME! C. Direction

44. D. Line of Action B. Point of Application A. Magnitude 7. It is the location where force is applied QUIZ TIME! C. Direction

45. D. Tension B. Normal A. F riction 8 . REFERS TO THE FORCE EXERTED BY A PERSON OR AN OBJECT TOWARDS ANOTHER PERSON OR OBJECT. QUIZ TIME! C. Applied

46. D. Tension B. Normal A. F riction 9. THE FORCE APPLIED TO A STRING, ROPE, CHAIN, CABLE AND THE LIKE. QUIZ TIME! C. Applied

47. D. Line of Action B. Point of Application A. Force 10 . The stronger the magnitude, the faster the _________. QUIZ TIME! C. Velocity

48. D. Magnetic Force B. Friction Force A. Applied Force 1. Which of the following is an example of Non-contact force QUIZ TIME! C. Tension Force D. Magnetic Force

49. B. Negative A. Positive 2 . If the force is directed to the right, what algebraic sign should be used when adding forces? QUIZ TIME! C. Both positive and negative A. Positive

50. D. Tension B. Gravitational A. F riction 3. Which of these forces pulls an object towards the earth? QUIZ TIME! C. Applied B. Gravitational

51. B. Unbalanced A. Balanced 4. If the net force is not equal to zero, the forces are________. QUIZ TIME! B. Unbalanced

52. D. Magnetic Force B. Unbalance d Forces A. Balanced Forces 5. Which of the following refers to the sum of the existing forces in the same line of action QUIZ TIME! C. Net Force C. Net Force

53. D. Line of Action B. Point of Application A. Magnitude 6 . It refers to how strong force is QUIZ TIME! C. Direction A. Magnitude

54. D. Line of Action B. Point of Application A. Magnitude 7. It is the location where force is applied QUIZ TIME! C. Direction B. Point of Application

55. D. Tension B. Normal A. F riction 8 . REFERS TO THE FORCE EXERTED BY A PERSON OR AN OBJECT TOWARDS ANOTHER PERSON OR OBJECT. QUIZ TIME! C. Applied C. Applied

56. D. Tension B. Normal A. F riction 9. THE FORCE APPLIED TO A STRING, ROPE, CHAIN, CABLE AND THE LIKE. QUIZ TIME! C. Applied D. Tension

57. D. Line of Action B. Point of Application A. Force 10 . The stronger the magnitude, the faster the _________. QUIZ TIME! C. Velocity C. Velocity