SCIENCE_6_Quarter3_Week1_Frictionalforce.pptx

Science 6_3rdQuarter_Week1

1. Day 1

2. Directions: Rearrange the jumbled letters to form the concept learned in the previous lesson through context clue. Write your answer in your Activity Notebook. 1. CREOF – is a push or pull that starts, stops, or changes the direction of an object 2. GAMENT – keeps refrigerator door stays closed to conserve energy 3. AGRIVYT – keeps orbiting planets in place as they moved around the sun 4. TRICITYCEEL– allows computer and other gadgets at work 5. CLEARUN – is the force that holds the particles in the nucleus together

3. What would life be without friction?

4. Friction is a force that opposes motion between two surfaces sticking or touching together. It causes an object that moves along a surface to slow down and eventually stop. Friction or Frictional force is always high or more on a rough surface and it is low or less on a smooth surface. The movement of people and objects are greatly affected by friction in relation to the kind of surface where they travel or move.

5. Friction can be classified as sliding, rolling, fluid, and static. Friction is useful, but sometimes harmful. It brings desirable and undesirable effects to objects and people. Friction could be reduced by applying lubricants to surfaces, reducing and minimizing contact between surfaces, and using aero dynamic shapes. Therefore, it would be best to observe and practice precautionary measures all the time while performing our daily tasks and activities at home and in school for our SAFETY.

6. Directions: Connect the phrases in Column A to its appropriate pictures in Column B. Write the letters of the correct answer on your Activity notebook.

7. Directions: Fill in the blank with the correct word to complete the concept learned. Choose the correct word from the box below. Use your activity notebook in writing your answer. I have learned that is a that motion between surfaces or together. Frictional force is less or on a surface while it is more or _____on a surface.

8. Fill in the blanks with the correct answer. Choose your answer from the box below. When an object over a solid surface, rolling friction is produced. Some examples of objects that produced rolling friction when rolled over a surface are rolling ball and of vehicles. Rolling friction uses lesser force making objects to move.

9. Directions: Analyze carefully each given kind of surface and condition. Write a 😊 symbol on the space if it shows a smooth surface and a 😔 if it is a rough surface. Write your answer in your Activity Notebook.

10. Day 2

11. What is Friction?

12. Have you seen or tried to ride a bicycle? What do you think will happen if the bicycle has no tires? Will it move easily and take us anywhere we want to play?

13. Directions: Read the directions carefully. Then, answer the questions that follow. Write your answer in your Activity Notebook.   Prepare the following materials:  3 old notebooks or books  5-10 ballpens or pencils

14. 1. Pile the 5 old notebooks or books. 2. Push the notebooks or books to move forward. 3. Put the ballpens or pencils on the table or floor. 4. Using the same pile of old notebooks/books put it above the ballpens /pencils just like what is shown in the photo.

15. 5. Push the notebooks/books to move forward.

16. Question: 1. Which set-up is easier to move, the pile of notebooks/books without ball pens/ pencils or the pile of notebooks/books with ball pens/ pencils? 2. How do the ballpens / pencils help in making the pile of notebooks/books move easier?

17. When an object rolls over a solid surface, rolling friction is produced. Rolling Friction is the friction that acts on objects when they are rolling over a surface. In activity 2.1, the pile of notebooks/books with ball pens/pencils under it moves easily rather than without the ball pens/pencils. Why? It is because of the cylindrical/spherical shape of the ballpen /pencil that at some point had contact on the surface of the table or floor, making it easier to move. Rolling of ball or wheel on the ground are some examples of rolling friction. Another common example of rolling friction is the movement of wheel on a motorcycle. The weight of the driver and the motorcycle presses the tires of the wheel against the ground. This downward force creates increased friction between the tires and the road giving tire friction. If it were not for the friction, the tires could not push on the road surface to drive the motor forward.

18. Directions: Put a √ if the object produces rolling friction if rolled along a surface and X if not. Write your answer on your Activity Notebook. _____1. wheels of bicycle _____2. rolling pin _____3. 5 peso coin _____4. marbles _____5. wheelbarrow _____6. table _____7. cabinet with wheels _____8. kite _____9. soccer ball _____10. rocks

19. Can you think of other examples of objects that when rolled over a surface rolling friction is produced?

20. Fill in the blanks with the correct answer. Choose your answer from the box below. When an object over a solid surface, rolling friction is produced. is the friction that acts on the objects when they are rolling over a . Some examples of objects that produced rolling friction when rolled over a surface are rolling ball and of vehicles. Rolling friction uses lesser force making objects to move.

21. Directions: Analyze carefully each given object or surface whether each possesses HIGH or LOW frictional force. Do this in your activity notebook. Note: An example has been given for you

22. Day 3

23. What is a rolling friction?

24. Directions: Study the relationships of the four pictures below. Identify the word that would best describe the four pictures. Write your answer in the boxes below.

25. Directions: Read the directions carefully. Then, answer the questions that follow. Write your answer in your Activity Notebook.   Prepare the following materials:  3 old notebooks or books  5-10 ballpens or pencils

26. 1. Pile the 5 old notebooks or books. 2. Push the notebooks or books to move forward. 3. Put the ballpens or pencils on the table or floor. 4. Using the same pile of old notebooks/books put it above the ballpens /pencils just like what is shown in the photo.

27. 5. Push the notebooks/books to move forward.

28. Question: 1. Which set-up is easier to move, the pile of notebooks/books without ball pens/ pencils or the pile of notebooks/books with ball pens/ pencils? 2. How do the ballpens / pencils help in making the pile of notebooks/books move easier?

29. When an object rolls over a solid surface, rolling friction is produced. Rolling Friction is the friction that acts on objects when they are rolling over a surface. In activity 2.1, the pile of notebooks/books with ball pens/pencils under it moves easily rather than without the ball pens/pencils. Why? It is because of the cylindrical/spherical shape of the ballpen /pencil that at some point had contact on the surface of the table or floor, making it easier to move. Rolling of ball or wheel on the ground are some examples of rolling friction. Another common example of rolling friction is the movement of wheel on a motorcycle. The weight of the driver and the motorcycle presses the tires of the wheel against the ground. This downward force creates increased friction between the tires and the road giving tire friction. If it were not for the friction, the tires could not push on the road surface to drive the motor forward.

30. Directions: Write True if the statement is true and False if it is not true about friction. Write the answers in your Science activity notebook .   __________1. A car in the parking lot has a static friction. __________2. When object rolls along a surface, sliding friction occurs. __________3. When someone is swimming, rolling friction prevents him/ her from drowning. __________4. Fluid friction acts on objects that are moving through liquids and gases. __________5. When a kite flies in the air, air resistance acts on it.

31. Directions: Read the statements carefully. Write your answers on your Activity Notebook.   Uncle Jim used a wheelbarrow ( kariton ) to transfer some soil to be used for planting flowers, while Uncle Tata uses sack to drag the soil. Who among the two will save effort in transferring the soil? Why? 2. Lyjim puts rollers to move the cabinet full of books while Milkjane pushes the book shelf full of books. Which object is easier to move? Why?

32. Directions: The statements below are examples of sliding friction. Cite the importance of this, particularly in our health. Write your answers in your activity notebook.

33. Directions: Read the questions carefully. Write the letter of your answer on your Activity Notebook. 1. When an object rolls over a surface is produced. A. Fluid friction B. Rolling friction C. Sliding friction D. Static friction 2. Which of the following statement is true about rolling friction? A. It is produced when an object is at rest. B. It is produced when an object is moving in water C. It is produced when an object is rolled in a surface. D. It is produced when an object rub against each other.

34. 3. Which is an example of an object that can produce rolling friction when rolls over a surface? Ball B. Cabinet C. Shoe box D. Table 4. Riding a bicycle and using of wheelbarrow ( kariton ) are examples of . A. Fluid friction B. Rolling friction C. Sliding friction D. Static friction 5. Which of the following shows an example of rolling friction? A. A kite flying. B. A soccer ball rolling on the ground. C. A paper boat floating. D. A picture frame on the table.

35. Day 4

36. Directions: Write the key term that best completes each sentence. Write your answer in your Activity notebook. 1. Wheelchair racers move around the track is an example of what type of friction? 2. Friction changes the energy of an object from kinetic energy to . 3. Is a contact force that allows object’s motion to slow or stop between the two surfaces that are touching. 4. Friction is a force that acts in the direction of the intended motion of an object. 5. affects the motion of falling objects by acting the force of gravity.

37. Have you tried moving the cabinet across the floor?

38. When you push an object like a book on the floor or table, sliding friction occurs. Sliding friction occurs between two surfaces that come in contact with each other. Sliding friction acts in a direction opposite the direction of motion. In the case of a book, the book moves forward while sliding friction is in the opposite direction. Sliding friction slows down the movement of the book or object that is moving. This sliding friction prevents the object to move forward as fast as it would. When sliding friction is acting on an object, other forces must be present to keep the object moving. It could be a push or force of gravity when the object moves in slope. Sliding Friction occurs when two objects rub against each other or slide against each other. It is caused by molecular adhesion between surfaces.

39. Observe the picture below. Have you imagined how friction occurs in this setting? Why do you think basketball players wear shoes with rubber soles instead of leather shoes? What do you think will happen if they will wear leather shoes?

40. Directions: Draw examples of sliding friction and give short description about each picture you have drawn. Use this table below. Draw and write your answers in your activity notebook

41. Questions: Based from your given example of sliding friction, when does this friction occur? 2. In what way does sliding friction is important?

42. Directions: Fill in the blanks with the correct words from the box below to complete the concept learned. Write your answers in your activity notebook.

43. I have learned that...

44. Directions: Write T if the statement is True and if the statement is False, underline the words that make it false and write your answers in your activity notebook. _________1. Sliding friction occurs when two objects rub against each other or slide against each other. __________2. The greatest friction shows on a polished floor or smooth surface. __________3. More force is needed to pull the block of wood when friction is greater. __________4. Sliding Friction acts in a direction opposite the direction of motion. __________5. The rougher the surface, the faster an object will move over the surface.

45. Day 5

46. What is a Sliding Friction?

47. When you push an object like a book on the floor or table, sliding friction occurs. Sliding friction occurs between two surfaces that come in contact with each other. Sliding friction acts in a direction opposite the direction of motion. In the case of a book, the book moves forward while sliding friction is in the opposite direction. Sliding friction slows down the movement of the book or object that is moving. This sliding friction prevents the object to move forward as fast as it would. When sliding friction is acting on an object, other forces must be present to keep the object moving. It could be a push or force of gravity when the object moves in slope. Sliding Friction occurs when two objects rub against each other or slide against each other. It is caused by molecular adhesion between surfaces.

48. Directions: Match the pictures in Column A with the type of friction in Column B. Write your answer in your Science activity notebook.

49. Multiple Choice: Read the questions below and choose the letter of the correct answer. Write your answers in your journal/answer sheet. 1. What is sliding friction? A. It occurs between two surfaces that come in contact with each other. B. It occurs in stationary objects or objects at rest. C. It occurs between moving objects and a liquid or between an object moving in the air. D. It opposes the motion of the wheel turning along a surface. 2. What type of friction occurs when there is more force needed to travel an object in a surface than rolling Friction? A. Static Friction B. Sliding Friction C. Fluid Friction

50. 3. The following statements are examples of sliding friction EXCEPT ONE. Which is it? A. A block being slid across the floor B. A glass being pushed across the table C. Jeans on your legs when putting it on D. When a train goes around 4. Which type of friction opposes the sliding of objects over a surface? A. Static Friction B. Fluid Friction C. Sliding Friction D. Rolling Friction 5. Mucus produced by snails, help them move along the ground. How does the mucus help snails move? A. Mucus is cold. B. Mucus reduces friction. C. Mucus leaves a trail. D. Mucus makes the snail lighter.