Monday, Feb. 2 nd p. 154, 155

Monday, Feb. 2 nd 154 2/2/15 Mon. L.T.: I can explain and give examples of potential energy and kinetic energy as well as apply my knowledge in analyzing the energy flow in my car. DO NOW: When you wind up the mousetrap car and hold it at the starting line (not moving), does the car still have energy? Why or why not? ……………………. Reflection: Did I fully engage in talking with my neighbors about what I understand and/or not understand about PE and KE? Did I completely fill out my t-chart? Did I diagram my car and use arrows and labels to describe the energy flow in it? 155 Potential and Kinetic Energy Potential EnergyKinetic Energy Examples: Examples: Diagram of Car and Energy Analysis

PEKE Examples: Examples: Sources: 1.p. 75 black STC book 2.Section 300 in small green book

5 th period PEKE 1. How much energy something can have 2. More massive and more height = more PE 3. PE can transfer into KE Examples: penguin on a rock above water, whale on a hill (lots of mass and height), stretched rubber band, mousetrap, a charged phone, battery, sinkhole before it falls 1. More mass = more KE x mass x speed^2 = KE 3. Only moving objects have KE 4. If 2 objects have same mass, the faster one has more KE. 5. KE can be transferred Examples: dog running, airplane taking off, demolition derby, sinkhole sinking, ANYTHING in motion

4 th period PEKE 1.How much position or its shape mass determines how much PE there is 2.Gravitational PE = weight x height 3.PE --> (transforms) KE as it falls 4. Examples: penguin on cliff, battery, your lunch stored up chemical energy in you, foosball men lifted up x mass x speed^2 = KE 2.Motion energy = KE 3.Only objects in motion have KE 4.Tractors: the faster one has more KE The greater the speed the more KE 5. KE can be transferred from 1 object to another. 6. KE can turn into other types of energy (like heat energy) Examples: roller skating, bowling (ball and pins), table hockey, foosball men kicking ball

3 rd period PEKE 1.More elevation or higher up something is = more PE 2.Energy of an object depending on its position (how high up it is) or shape (mass), or situation 3.You can store PE. 4.PE can turn into KE. Examples: battery, penguin on top of cliff, swimmer on diving board 1.Greater speed or mass = greater KE x mass x speed ^2 3.KE can be transferred to other objects 4.No motion = no KE. Motion = KE. Examples: penguin diving into water, swimmer diving into pool, steel ball moving across floor, bowling ball hitting pins Rule: Energy can never be created nor destroyed.

2 nd period PEKE 1. The energy something has because of its position or shape 2 the higher an object, the more mass = more PE 3 PE allows objects to fall (gravity) Examples: glass on top of shelf, skier on top of the hill, penguin on cliff, battery?? 1. Object must be moving 2. Faster the speed, more mass = the greater KE 3. Kinetic energy can transfer from object to object Examples: riding a bike, Levi hitting pencil with ruler, Newton’s cradle,

Instructions: Diagram your car (try your best and you can use basic shapes instead of being incredibly detailed) Use arrows and labels to explain energy flow of your car. You should think of the energy flowing through your car in a linear way (it starts here, then goes here, then moves there, and finally goes there…) Things to think about: 1. Where/how does energy enter into your car? 2. Is there any energy type change happening at any point? 3. Does all of the PE in your car change into KE, or is your PE converting into other types of energy too?