oneone eem-3 objective: to examine real life situations involving energy use in order to analyze how...
TRANSCRIPT
oneEEM-3
Objective: To examine real life situations involving energy use in order to analyze how energy can be transformed from one form to another.
WELCOME PARENTS!!!ENERGY Note: How does energy change forms?Drill:
1. Get a lab from the SET. 2. Take out your dry erase board.
3. Write both parts of the law of Conservation of Energy.
ENERGY AROUND US
oneEEM-3
Activity 1: Forms of Energy – Recapa. 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.)
ENERGY AROUND US
oneEEM-3
BACKGROUND INFORMATIONEnergy 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.
ENERGY AROUND US
oneEEM-3
According to the law of conservation of energy, energy is neither created nor destroyed, but converted to other forms.
ENERGY AROUND US
oneEEM-3
SEGAL ART DEMO
ENERGY AROUND US
oneEEM-3
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.
ENERGY AROUND US
oneEEM-3
BEFORE:Kind – PotentialForm – Chemical
Energy is stored in the chemicals on the tip of the match.
AFTER:Kind – Kinetic Form –
Thermal & EMThe burning match generates heat which is thermal energy and light which is electromagnetic energy. Both are kinetic energy.
ENERGY AROUND US
oneEEM-3
HOMEWORKLocate Energy Conversions in Your House
ENERGY AROUND US
oneEEM-3
Objective: To examine real life situations involving energy use in order to analyze how energy can be transformed from one form to another.
WELCOME PARENTS!!!ENERGY Note: How does energy change forms?Drill:
1. Take out your lab and your homework. 2. Put a star next to your best conversion.
ENERGY AROUND USDay 2
oneEEM-3
HOMEWORKENERGY CONVERSION DITTO
ENERGY AROUND USDay 2
oneEEM-3
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.
ENERGY AROUND USDay 3
oneEEM-3
Let’s RECAP
1. Homework – 2 freebees
2. Station Recap
ENERGY AROUND USDay 3
oneEEM-3
Example 1: FanObserve 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!
ENERGY AROUND US
oneEEM-3
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.
ENERGY AROUND US
oneEEM-3
Example 2: Effervescent TabletObserve 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!
ENERGY AROUND US
oneEEM-3
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.
ENERGY AROUND US
oneEEM-3
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!
ENERGY AROUND US
oneEEM-3
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.
ENERGY AROUND US
oneEEM-3
Example 4: Car and RampObserve 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!
ENERGY AROUND US
oneEEM-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).
ENERGY AROUND US
oneEEM-3
Example 5: YouObserve 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!
ENERGY AROUND US
oneEEM-3
BEFORE:Kind – Kinetic Form –
Mechanical
AFTER:Kind – Kinetic Form –
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.
ENERGY AROUND US
oneEEM-3
HOMEWORKDay 3
Ditto 5-1
ENERGY AROUND US