Energy, Force and Motion

1. Energy, Force and Motion Energy exists in many forms and moves from one form to another. Forces cause motion to occur.

2. Unit Essential Question • How does energy, force and motion play a part in your life?

3. Concept: Interaction of forces and motion LEQ 1: What is movement (motion)?

4. Concept: Interaction of forces and motion How do things move? • Above • Below • Ahead • Behind • Up • Down • Horizontally • Vertically • Right • Left

5. How do we know something has moved? Concept: Interaction of forces and motion • By looking at the things that are not moving around it. • FRAME OF REFERENCE

6. Concept: Interaction of forces and motion You can tell that an object has moved when its __________ has changed. position

7. Concept: Interaction of forces and motion Now answer the question: What is movement (motion)?

8. Concept: Interaction of forces and motion LEQ 2: What makes objects move, stop or change direction?

9. Concept: Interaction of forces and motion FORCES

10. Concept: Interaction of forces and motion Force WHAT IS FORCE? Any push or pull that causes an object to move, stop or change speedor direction.

11. Concept: Interaction of forces and motion Force • The greater the force, the greater the change in motion. • The bigger an object is, the less effect a force will have on it. The smaller an object is, the more effect a force will have on it.

12. Concept: Interaction of forces and motion Inertia • Inertia keeps an object still or keeps it moving. • A moving object will keep moving until something stops it. • An object that is not moving will not move until something moves it.

13. Concept: Interaction of forces and motion When an object is in motion it tends to stay ... in motion.

14. Concept: Interaction of forces and motion When an object is still it tends to remain ... still.

15. Concept: Interaction of forces and motion This is called… INERTIA

16. Concept: Interaction of forces and motion What is an example of a force between surfaces that slows or stops objects? FRICTION

17. Concept: Interaction of forces and motion Friction creates ______. heat

18. Concept: Interaction of forces and motion Friction • Friction is the resistance to motionmade by two objects rub each other. • Rub your hands together! What happens? The heat you feel is friction. Try faster and slow. What happens? • When you pull the brakes on your bicycle. The brake pressing against the tire and the tire rubbing against the street is friction. • Think of bowling. As the ball goes down the lane what happens? The ball begins to slow, this is friction. The ball may lean or start rolling one direction or the other, this is friction.

19. Concept: Interaction of forces and motion Gravity • The force that makes things fall to the ground on Earth is called gravity. • Gravity also holds Earth and the other planets in their orbits around the Sun. • The force of gravity also exists on the moon but it is not as strong as it is on the Earth. This is because the moon is much smaller than the Earth.

20. Concept: Interaction of forces and motion Now answer the question. What makes objects change speed or direction?

21. LEQ 3: What connections can we make between force and motion? Concept: Interaction of forces and motion

22. Concept: Interaction of forces and motion Do your Work!!! WHAT IS WORK? • Work is done when a force is used to move an object a certain distance.

23. Concept: Types of Energy LEQ 4:What are the different types of energy?

24. Concept: Types of Energy Energy Energy is the ability to do work.

25. Concept: Types of Energy Energy • Two types of energy: • Kinetic(motion) • Potential (right now,it’snot moving, but it has the ability to move) Energy game

26. Concept: Types of Energy Energy • Kinetic-moving energy (energy of motion)

27. Concept: Types of Energy The energy of motion is __________ energy. kinetic

28. Concept: Types of Energy Potential Energy • Potential- stored energy (energy waiting to be used)

29. Concept: Types of Energy The energy of position is _____________ energy. potential

30. Concept: Types of Energy Kinetic Potential

31. Concept: Types of Energy Name the type of energy in each of the following statements.

32. Concept: Types of Energy The ball is rolling down the hill. KINETIC

33. Concept: Types of Energy The roller coaster is sitting at the top of the track. POTENTIAL

34. Concept: Types of Energy The pencil fell off the edge of the desk. KINETIC

35. Concept: Types of Energy The skier is at the top of the ski jump. POTENTIAL

36. Concept: Types of Energy Play the game!!!! POTENTIAL KINETIC ENERGY

37. Concept: Types of Energy Now answer the question:What are the different forms of energy?

38. Concept: Forms of Energy LEQ 5: What are the different forms of energy?

39. Concept: Forms of Energy Forms of Energy - Chemical • Ex: stored energy in food and fuel.

40. Concept: Forms of Energy Forms of Energy - Electrical • Ex: batteries, electric in homes

41. Concept: Forms of Energy Forms of Energy - Light • Ex: sun and lasers

42. Concept: Forms of Energy Forms of Energy – Mechanical • Ex: wind, water falling over a water fall, sound

43. Concept: Forms of Energy Forms of Energy - Nuclear • Ex: Sun, nuclear fusion

44. Concept: Forms of Energy Forms of Energy - Sound • Ex: music, your voice

45. Concept: Forms of Energy Forms of Energy - Thermal • Ex: stove, heaters, matches

46. Watch the Brainpop movie about energy

47. Concept: Forms of Energy Now answer the question:What are the different forms of energy?

48. Concept: Conversion of Energy LEQ 6: How does energy change form?

49. Concept: Conversion of Energy Forms of Energy • CAN ENERGY CHANGE FORM? YES! • Ex: The fuel in a rocket changes from chemical energy to mechanical energy when the fuel burns

50. Choose a picture and explain how the energy changes form.