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Published byEleanor Lester Modified over 9 years ago
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Do Now 1.How does this thing work?
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Announcements Modified schedule Monday and Tuesday – Report to 3 rd block Monday – 1:36-2:56 FIRST BLOCK – 3:00-4:15 SECOND BLOCK Tuesday – 1:36-2:56 FOURTH BLOCK – 3:00-4:15 FIFTH BLOCK Get your progress reports signed! 10 days till EOG’s 24 school days till we’re leaving the 7 th grade
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Agenda Finish up our lab from Friday Talk about the seven different energy types Energy transfer Energy transfer lab
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Energy Lab You have 25 minutes today to finish up everything for the lab from Friday. – Most of you are up to the Vocab Scavenger Hunt and part 4. If you aren’t there yet, I expect some serious hustle. If you finish early, I have extra credit work for you. – I don’t think I’ve ever been hassled so much for extra credit!
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Energy Defined as the ability to do work. Energy is measured in joules (J). Work done on an object gives energy to that object.
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7 forms of energy Note: you do not need to write this information down. You have it all in your graphic organizer from your vocab scavenger hunt. – If you “forgot” to draw the picture that corresponds with the energy type, you may draw the examples that I have up here.
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Brain Break Because there is a lot today.
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Electrical Energy Electrons
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Sound Energy Vibrating molecules picked up by our ears.
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Chemical Energy Food, batteries, fuels Why food?
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Heat Energy How “fast” molecules are vibrating.
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Light Energy Includes radio and TV waves. Colors represents different amounts of electromagnetic energy.
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Atomic Energy The source of this energy is the nucleus or center of the atom. (nuclear power, sun, radioactive elements)
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Mechanical Energy Matter that is in motion.
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Energy Conversions All forms of energy can be converted to other forms. This is because of the Law of Conservation.
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Energy conversions: Things to remember Some energy is ALWAYS changed into heat Energy conversions end with a usable and unusable form of energy. – Energy is NEVER lost!!
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Usable and non-usable Kinetic and potential energy can be re- used to turn into another energy form. Sound and friction (sometimes heat) energy is non-usable because it is lost to the universe.
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Steps to identifying energy conversions 1. Read the question 2. Circle a clue to an energy source 3. label the type of energy 4. circle another clue to an energy source 5. label the type of energy 6. Be sure that you are converted in the right direction
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Examples What is the usable and non-usable energy forms?
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On your own What is the energy input and what are the outputs? Electrical Light Sound
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Photosynthesis The prefix photo means light
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Solar Energy Chemical Energy
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Try one on your own. Flashlight – Chemical to electric to radiant Chemical because of what’s inside the battery Hairdryer – Electric to thermal to motion Glow Stick – Chemical to radiant
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Energy conversion lab You’ll be working through some energy conversions. Make sure that you are reading your lab sheet.
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EOG week
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