Energy Review Kinetic Energy Brain POP Potential Energy

Energy Review: • Kinetic Energy – Brain. POP • Potential Energy – Brain. POP

Complete this chart in your notes: What is it? What do you think? What do you know? What questions do you have? Energy Transformation

Energy Potential Gravitational Kinetic Chemical Elastic nuclear Magnetic Mechanical Sound/Wind heat electrical light

Energy Transformation s

Energy Transformations • A transfer of energy that causes the energy to change from one form to another. • Any form of energy can be converted into any other form of energy. • Often one form of energy is converted into more than one other form.

So, how do we know what the change is? ? • First ask : • “what did this START as? ” • Now ask : • “what did it BECOME NEXT? ” • Then ask: • “does it change form again? • Lastly ask : • “what is the END result? ”

Energy Transformations Draw this chart in your notes… In the table, identify the initial and final energy for the transformations listed. Initial Energy Transformation Final Energy Gravitational potential energy Dropping a water balloon Kinetic energy Car engine burning gasoline Solar cells Human body Hand warmers Wind chime Plugging in a lamp You have 5 -10 minutes to work on this. Use your time wisely, and don’t forget the questions!!!!

Let’s Review… • Windmill Battery • Iron Mixer • TV Plant • Microwave Sun

What energy transformations can you name in these household items? • An alarm clock • A battery • A light bulb • A blender

The Law of Conservation of Energy: • “Energy is neither created nor destroyed” • No energy is lost or gained when it changes from one form to another. • Heat may be emitted, but it is not lost!!!

Look at these examples of Law of Conservation of Energy Transformation for a Pendulum Energy Transformation on a Roller Coaster

Energy: Types and Transformations

Your turn to try… • Look around the room and see if you can find 5 different energy transformations. • Jot down a list of the object, what it started as, and how it has ended up. • After you make your list, share with your table. • Be able to share 3 with the class.

Snapshots in time • On a sheet of white paper, draw a scene that contains AT LEAST 10 energy transformations. • Your picture must be colored and neat. • You need to number the energy transformation on the front of your picture and then identify it on the back. • See example…….

LAB TOMORROW: • A note about the lab book: – Numbered items are steps you follow (you don’t have to write anything!). – Lettered items are questions you are to answer! • For this lab each student will need to turn in their own paper!

Table 2: Height Position (cm) Height (cm) 10 20 30 40 50 60 70 80 90 100 110 120 33. 0 27. 0 20. 0 15. 5 22. 0 28. 0 32. 5 31. 5 25. 5 18. 0 12. 0 Time A (s) Speed (cm/s)

Lab 6 A For this lab you will complete al 5 parts! Remember, numbered items are steps and require no written answers Answer all lettered items on your paper. READ EVERY ITEM CAREFULLY!! I will be walking around to answer questions and help with set up!