Q4 - Lesson 1 - FORCE AND MOTION.pptx

FORCE AND MOTION

1. Describing Position Using a Reference Point

2. Reference point is used to find or describe the location of something. The position of an object is determined by giving a distance and direction in relation to a reference point.

3. Determining a Position An object can be stationary or moving. If it does not change the position , it is stationary. If it change its position, it is moving. In order to tell whether the objects has moved or not, there must be a reference point.

4. Determining a Position The boy is a good example of a reference point since he did not move from his original position. Remember that a good reference point must be stationary or not moving.

5. Identify things that cause Movements of Objects

6. Have you ever pushed or pull something?

7. Which images show a pulling force?

8. Which images show a pushing force?

9. By the end of the lesson, you'll be able to: 1. Observe how force makes object move 2. Show a force as a push or a pull: and 3. Describe how to be safe from moving objects Learning Outcomes

10. When something is moving, we say it is in motion. An object in motion changes its place, position, or direction.

11. Can this object move on there own?

12. You see moving object things around you. There are things that move by themselves. There are things that cannot.

13. FORCE IT CAN BE PUSH OR PULL THAT MAKE THINGS MOVE. MOTION IT IS MOVEMENT OF AN OBJECT. Vocabulary

14. PUSH To move something away from you PULL To move something toward you Vocabulary

15. A kind of force that acts when object touch each other is either push or pull. What is Force?

16. A force can change the position in which an object is moving. A force can change the direction in which an object is moving. What is Force?

17. When a ball hits a wall, it bounce back in the opposite direction. So, the force exerted by the wall on the ball changes its direction of motion. What is Force?

18. FORCES FROM PUSHING AND PULLING Push and Pull Object move due to different forces.

19. It can make an object move slower or faster. It can change the direction of a moving object. Effects of Push and Pull

20. FORCES FROM THE WIND Wind When the wind blows hard, the kite moves fast and flies high. When the wind blows harder, the kite moves faster and flies higher.

21. FORCES FROM RUNNING WATER Running water The leaves and small branches that float on water are moved by the water. The running water exerts a force that can move things.

22. FORCES FROM GRAVITY GRAVITY is the downward force that pulls things to earth. The pull of earth on object is known as the force of gravity. This is why the leaves fall to the ground. Earth’s gravity

23. FORCES FROM MAGNETS MAgnet A magnet is anything that pulls or attracts metal. Magnetism is the force that pulls objects made of iron and steel toward a magnet. A magnet has two poles: North pole and South pole.

24. KINDS OF MAGNETS Magnet comes from different shapes

25. MAGNET Magnets cannot move or attract all kinds of materials. They can only attract materials made of iron, steel, and nickel. These materials are called magnetic materials.

26. MAGNET Materials that cannot be attracted by a magnet are called nonmagnetic materials.

27. Be careful when dealing with moving object How do you protect yourself from moving object?

28. STAYING SAFE FROM MOVING OBJECTS

29. Avoid accident brought about by force. How can you do this . Here are some ways:

30. 1. Wear protective gear when riding a vehicle such as a helmet on a motorcycle or a seatbelt in a car.

31. 2. In case of an earthquake, avoid staying under objects hanging from the ceiling . The object might fall due to gravity and hurt anyone who happens to be under it.

32. WHAT TO DO page 245. 246 (QUICK QUIZ)

33. Thank You for Listening !