oneone GTE-2 Objective: To examine real life situations involving energy use in order to analyze how energy can be transformed from one form to another. ENERGY Note: How does energy change forms? Drill: 1. Get both dittos from the SET. 2. Complete the Drill on the energy ditto to prepare for Open Discussion.

oneone OPEN DISCUSSION Jack Matthew Ledieu says, “I know that energy can be converted from one type (kind) to another based on our pendulum experiment. (Potential energy can be converted into kinetic energy and vice versa.) However, you cannot change energy from one form to another.” Do you agree or disagree with Jack? Explain your position. You have 5 minutes to prepare your response for Open Discussion. GTE-2

oneone Activity 1: Forms of Energy – Recap a.View the energy card being displayed. b.Choose the card with the form of energy that matches the displayed card. c.Show your card when instructed to. (The back of your card should have clues.) GTE-2

oneone BACKGROUND INFORMATION Energy is all around you in many different forms. The energy around us is being stored, transformed or transferred at all times. Any device that undergoes an energy conversion where stored energy (potential energy) is changed to active energy (kinetic energy) undergoes an energy trans"form"ation. These energy transformations enable batteries, flashlights, toasters, video games, cars, and even you to do work. GTE-2

oneone According to the law of conservation of energy, energy is neither created nor destroyed, but converted to other forms. GTE-2

oneone SEGAL ART DEMO GTE-2

oneone Activity 2: Demonstration 1.Observe the teacher demonstration. 2.Predict the energy types and forms involved in the demonstration. Circle your choices and justify your selections in the boxes below. GTE-2

oneone BEFORE: Kind – PotentialForm – Chemical Energy is stored in the chemicals on the tip of the match. AFTER: Kind – KineticForm – Thermal & EM The burning match generates heat which is thermal energy and light which is electromagnetic energy. Both are kinetic energy. GTE-2

oneone HOMEWORK 1.Preview Lab 2.Forms of Energy Ditto 3.Quiz Friday GTE-2

oneone Objective: To examine real life situations involving energy use in order to analyze how energy can be transformed from one form to another. ENERGY Note: How does energy change forms? Drill: 1. Take out your lab sheets. 2. On your dry erase board, write both parts of the Law of Conservation of Energy.

oneone HOMEWORK ENERGY CONVERSION DITTO GTE-2

oneone Objective: To examine real life situations involving energy use in order to analyze how energy can be transformed from one form to another. ENERGY Note: How does energy change forms? Drill: 1. Take out your lab and your homework. 2. Identify a homework question that you had difficulty with. GTE-2

oneone Let’s RECAP 1.Homework – 2 freebees 2.Station Recap GTE-2

oneone Example 1: Fan Observe the fan. Think! Ask yourself, from where does the energy come to make the blades move? Record! Turn it on. What form/forms of energy is/are represented by the blades moving? Record! GTE-2

oneone BEFORE: Kind – Kinetic Form – Electrical AFTER: Kind – Kinetic Form – Mechanical The electrical energy (moving electrons) is transformed into mechanical energy represented by the moving blades. GTE-2

oneone Example 2: Effervescent Tablet Observe the effervescent tablet. Think about the energy represented by the tablet. Record! Place it into a beaker of water. What forms of energy are represented by the bubbles moving? Record! GTE-2

oneone BEFORE: Kind – Potential Form – Chemical AFTER: Kind – Kinetic Form – Mechanical There are chemicals in the tablet which represent stored chemical energy. When the tablet is placed into the water a chemical reaction takes place and the chemical energy is converted to mechanical energy as the gases move through the water. GTE-2

oneone Example 3: Toaster Oven Observe the toaster oven. Think! Ask yourself, from where does the energy come to make the toaster oven work? Record! Turn it on. What form/forms of energy is/are represented by the working oven? Record! GTE-2

oneone BEFORE: Kind – Kinetic Form – Electrical AFTER: Kind – Kinetic Form – Thermal The electrical energy (moving electrons) is transformed into thermal energy as the coils in the oven get hot. GTE-2

oneone Example 4: Car and Ramp Observe the car and ramp. Place the car at the top of the ramp. Think! Ask yourself, “What energy does the car have at the top of the ramp before it moves? Release the car. What form/forms of energy is/are represented by the car moving? Record! GTE-2

oneone EEM-3 BEFORE: Kind – Potential Form – Mechanical AFTER: Kind – Kinetic Form – Mechanical Form – Thermal When the car is at the top of the ramp it has potential mechanical energy due to the height. After release it is converted into mechanical (movement) and thermal (heat).

oneone Example 5: You Observe your hands. Start rubbing them together. Ask yourself, what form of energy is represented by your hands rubbing? Record! What form/forms of energy were represented by what you felt? Record! GTE-2

oneone BEFORE: Kind – KineticForm – Mechanical AFTER: Kind – KineticForm – Thermal Rubbing hands together represents mechanical kinetic energy as the hands are moving. This is converted to thermal energy as the rubbing generates heat due to friction. GTE-2

oneone Wrap Up Analysis Ditto GTE-2

oneone HOMEWORK Day 3 Ditto 5-1 GTE-2