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Potential and Kinetic Energy PE vs KE

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Presentation on theme: "Potential and Kinetic Energy PE vs KE"— Presentation transcript:

1 Potential and Kinetic Energy 69 68 PE vs KE
Task 1: Get two post-it notes and place side by side on the top half of page. Label one potential energy and one kinetic energy Task 2: Glue the graphic organizer on the bottom of the page Modify for your students

2 Motion and Machines

3 VIDEO – Potential/Kinetic Energy
Take notes under your post-its from the video VIDEO – Potential/Kinetic Energy

4 Potential Energy Energy not in use Depends on height (off the ground)
and weight Objects that are still (not moving)

5 Which ball has more potential energy?
Have students move to different sides of the room Green = go to the left side of room Blue = go to the right side of room

6 Kinetic Energy Energy in motion or in use Depends on mass and speed
Moving object(s)

7 Where will the roller coaster car have the most kinetic energy?

8 Think – Pair – Share Tell the person next to you the difference between POTENTIAL ENERGY and KINETIC ENERGY.

9 Use the card provided, to find your energy match. Then sit together.
Activity Use the card provided, to find your energy match. Then sit together. Complete the card sort on your table – grouping the pictures as either potential energy or kinetic energy.

10 Potential and Kinetic Energy 69 68 PE vs KE
Task 3: Using the word provided, illustrate the word you received showing that object with both potential and kinetic energy. Use at least 4 colors Exit Ticket: answer the following question and explain your reasoning Task 1: Get two post-it notes and place side by side on the top half of page. Label one potential energy and one kinetic energy Task 2: Glue the graphic organizer on the bottom of the page Modify for your students

11 Exit Ticket Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow – covered hill? a. Kinetic energy decreases and potential energy increases. b. Kinetic energy increases and potential energy decreases. c. Both potential energy and kinetic energy decrease. d. Both potential energy and kinetic energy increase. Choose an answer and explain your thinking.

12 Set up page 39 and log in to explorelearning.com
Speed = Distance/Time 59 58 Forward Backwards Stop Speed Gizmo = Distance/Time – whole group

13 Gizmo – Distance and Time Graphs

14 Complete each scenario by graphing the story and answer the question.
Speed = Distance/Time 71 70 Change in Motion Forward Backwards Stop Speed Complete each scenario by graphing the story and answer the question. Check answers with the teacher. Modify for your students Glue story here

15 Task 1: Match the graph with the story.
Graphing Motion 75 74 Graphing QR Code Task 1: Match the graph with the story. Task 2: Complete GRAPH PRACTICE1 Check answers with teacher and receive stamp. When completed, glue on this page. Using excel/numbers, create a speed graph that has: At least 5 points At least 3 movements – forward, rest/stop, backward Create a QR code for your graph and glue on this page Modify for your students

16 Graphing Motion Pt.2 77 76 Motion Bulletin Board Task 3:
1 2 3 4 5 6 Task 3: Create a bulletin board that represents SPEED using what you have learned during this unit. Use at least 4 colors Task 1: Draw this chart. Task 2: Scan 6 different QR codes and describe their graph in the box by writing a short story. Modify for your students

17 Calculating Average Speed
79 78 Hurry, Hurry HW 1 2 3 4 Task 1: copy the table and take notes as we watch each video on Average Speed Task 2: Glue Helicopter Motion on the bottom of the page Modify for your students

18 Notes: Calculating Average Speed Video 1: Describing Motion Video 2: How to Calculate Average Speed Video 3: How to Read Distance-Time Graphs Video 4: Reading Graphs to Calculate Average Speed

19 Let’s Practice! On white boards, figure out the answer.
When I say show me, hold up your answer.

20 D B C A E .5 m/s What is the speed at point B?

21 D B C A E .67 m/s What is the speed at point D?

22 D B C A E 1.5 m/s What is the average speed between points C and D?

23 D B C A E .25 m/s What is the average speed between points A and C?

24 D B C A E .8 m/s What is the average speed of this trip (A to E)?

25 Helicopter Motion What is the speed of the helicopter at 2 seconds?
Use 1 post-it per question (# each post-it). Show work and explain how you got the answer. Show me your work in order to get the left side assignment. What is the speed of the helicopter at 2 seconds? What is the total distance this helicopter travelled? What is the total time this helicopter was in motion? What is the average speed of the helicopter between 4 and 7 seconds? What is the average speed of the helicopter on this trip?

26 Calculating Average Speed
79 78 Helicopter Motion 1 2 3 4 Task 2: Glue in Helicopter Motion on top half of paper Task 1: copy the table above Modify for your students

27 Simple Machines 81 82 Simple Machines @Work
Task 1: Glue Cornell notes to this page. Task 2: Take notes on simple machines Modify for your students

28 Let’s take a closer look at simple machines!
Suppose you needed to put together a dresser. Which simple machines might you use? Let’s take a closer look at simple machines!

29 Introduction Simple machines are tools that make work easier
Simple machines are machines with few or no moving parts. Compound Machine- a machine that uses two or more simple machines. You are doing the same amount of work — it just seems easier

30 Kinds of Simple Machines

31 What is a Lever? A lever is a board or bar that rests on a turning point Most common simple machine because just about anything that has a handle on it has a lever attached

32 What is a Wedge? A wedge is a simple machine used to push two objects apart A wedge is usually made up of two inclined planes These planes meet and form a sharp edge. This edge can split or push objects apart An ax is a wedge that splits wood.

33 What is a Screw? An inclined plane that winds around itself a wedge at the tip A screw has ridges and is not smooth like a nail Some screws are used to lower and raise things A screw is a simple machine used to hold objects together.

34 What is a Wheel and Axle? A wheel and axle is a simple machine made of a rod attached to the center of a wheel. The axle is a rod that goes through the wheel. This lets the wheel turn. The axle, or rod, turns when you put force on the wheel. You probably have seen a wheel and axle on scooters, cars, roller skates, and wagons.

35 What is an Inclined Plane?
A ramp is an inclined plane. A flat surface that is higher on one end - slanting surface connecting a lower level to a higher level. You can use this machine to move an object to a lower or higher place.

36 What is a Pulley? Instead of an axle, the wheel could also rotate a rope or cord. This variation of the wheel and axle is the pulley In a pulley, a cord wraps around a wheel As the wheel rotates, the cord moves in either direction lifting a load You can use a pulley to move a load up, down or sideways.

37 Two Types of Pulleys Fixed pulleys are attached to the building and do not move Ex. Flag Pole Moveable pulleys are attached to the object that is being lifted.

38 Summary: Why are simple machines important?
Simple machines are important to us in our daily life. They help us do work. They make our lives easier.

39 Use pic collage app or magazine/internet pictures.
Simple Machines 81 82 Simple Task 1: Glue Cornell notes to this page. Task 2: Take notes on simple machines Task 3: Find examples of each type of simple machine. Create a collage of your images. Use pic collage app or magazine/internet pictures. Label each picture Modify for your students

40 I N C L E D P A Ants on a Slant 83 82 Acrostic
Glue Gizmo notes to this page. Log into Modify for your students

41 Glue Cornell notes to this page.
Pulleys 85 84 RERUN - Pulley Glue Cornell notes to this page. Modify for your students

42 Pulleys

43 Single Pulley: A single pulley reverses the direction of a force
With one pulley, the force you must pull with is the same as the weight of the object. In order to raise the object a height of 1 meter, you must pull the rope 1 meter Trade-off: the end of the rope must move a greater distance than the load

44 Compound Pulley (combination):
Two or more pulleys connected together Allow a heavy load to be lifted with less force Effort needed to lift the load is less than half the weight of the load Trade-off: you need more rope and you need to pull more rope!

45 Fixed Pulley: The fixed pulley is attached to an unmovable object like a ceiling or wall May be single or combination Doesn't change position Makes work easier by changing the direction of the applied force The force required to lift the load remains the same as lifting it without the pulley

46 Movable Pulley: A pulley that moves with the load (both the load and the pulley move) The load moves in the same direction as the applied force The movable pulley allows the effort to be less than the weight of the load It takes less force to raise an object than if you used only your hands The amount of force required depends on the number of supporting ropes The greater the number of pulleys and supporting ropes, the smaller the force required.

47 In the second picture, the weight is held by two ropes instead of one
In the second picture, the weight is held by two ropes instead of one. That means the weight is split equally between the two ropes, so each one holds only half the weight.

48 Pulleys are used to gain mechanical advantage trading the amount of rope you have to pull to lift an object for how heavy the object can be.

49 The more lines of support (ropes) a pulley has, the more mechanical advantage it has!

50 Pulley Lab With your table, complete the pulley lab on your table. Be careful with the equiptment. Follow any safety rules that apply.

51 R E U N Pulleys 85 84 RERUN - Pulley Glue Cornell notes to this page.
Modify for your students How do pulley’s make work easier?

52 Glue Gizmo notes to this page.
Gizmo - Pulleys 87 85 Pulley Postcard You are a pulley. Write a post card to any object explaining why you should be together. Include: At least 4 colors Image related to topic 3 facts about pulleys Glue Gizmo notes to this page. Log into Modify for your students


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