1 Student Objective To explain conservation of energy To explain conservation of energy To identify energy conversions To identify energy conversions When.

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Presentation transcript:

1 Student Objective To explain conservation of energy To explain conservation of energy To identify energy conversions To identify energy conversions When a bowling ball hits the bowling pins, the ball is doing ____________ on the pins. __________ is transferred from the ball to the pins. Warm Up Energy work

2 Flashlight Investigation What makes a flashlight shine? Lets Investigate: Lets Investigate: 1.Take batteries out of a flashlight & look at them…What type of energy do they provide? 2.Put batteries back into the flashlight and turn it on…What type of energy do you see? 3.Leave flashlight on for a few minutes then put your hand near the bulb of the flashlight. What type of energy do your feel?

3 Flashlight Review Reflections: –How does a flashlight work in terms of energy? –Where does the energy come from? What type of energy is this? –Where does the energy go? What type of energy is this? Energy in battery is transferred to the light bulb. Batteries to the light bulb Chemical transformed into electrical Radiant & thermal

4 Flashlight Review Conclusions: Conclusions: –A flashlight transforms _____________ energy into _______________ energy. But some ______________ energy was also given off. –Do other forms of energy transform? ________ Lets find out! Chemical/electrical radiant (light) thermal (heat) YES

5 - Energy Transformations and Conservation Energy Transformations Most forms of energy can be transformed into other forms. Most forms of energy can be transformed into other forms.

6 Reading to Understand Read pgs 158 – 163. Read pgs 158 – 163. In the graphic organizer answer the questions. In the graphic organizer answer the questions. QuestionAnswer 1. What is an energy transformation? 2. What are some examples of transformations between potential and kinetic energy? 3. What is conservation of energy? Hint: Look at pg

7 Reading to Understand Questions Check the answers below with yours from your reading Check the answers below with yours from your reading QuestionAnswer What is an energy transformation? An energy transformation is a change from one form of energy to another. What are some examples of transformations between potential and kinetic energy? Juggling and pendulums show transformations between potential and kinetic energy. What is conservation of energy? The law of conservation of energy states that energy cannot be created or destroyed.

8 ector/dcrfiles/energy/pendulums. dcr