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Do Now: Focused Free Write Look at the bottle of clear solution on my desk, what do you think it is? Does it have ENERGY?. Do Now: Take a lab from the Do Now Desk Get into your groups from last time! Get that data!. Do Now: Copy HW & Lab Pass UP. -Pass up Water Shoe box lab Monday: No HW
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Do Now: Focused Free WriteLook at the bottle of clear solution on my desk, what do you think it is? Does it have ENERGY?
Do Now: Take a lab from the Do Now DeskGet into your groups from last time!Get that data!
Do Now: Copy HW & Lab Pass UP -Pass up Water Shoe box lab Monday: No HW Tuesday: Energy Homework Wednesday: Energy Transfer Practice Question in Packet on Page 7 Thursday: Specific Heat WS Friday: No Homework Extra Help: Thursday Morning
Stop Monkey-N-ing around and Go Green already! P.S. I’m Mookie the Monkey Unit 1: ENERGY
What is ENERGY? Energy is the ability to do _______ Work
force move Work occurs when a _____ causes an object to _____ in the same direction as the force.
FORMS OF ENERGY Both basic states of energy, Kinetic and potential, can exist in many forms!
THERMAL (HEAT) Kinetic The total ________ energy of the particles in matter. (molecular motion)
SOUND A type of mechanical energy. It is the energy produced when objects ________. Ex: tuning fork, bell vibrate
MECHANICAL moving Energy with which ______ objects perform work. Ex: Wind, flowing water, using a hammer
ELECTRICITY A form of energy produced by the ________ of ________ movement electrons
CHEMICAL bonds Energy STORED in chemical ____ that can be released. Ex: food, fossil fuels, battery acid
STORED MECHANICAL ENERGY: Stored energy due to a change in the shape of an object. Ex: _______________ A stretched rubber band
LIGHT radiant wave A form of _______ energy that moves in a ______. Ex: lamp, stars
SOLAR ENERGY SUN All forms of energy that come from the ______.
NUCLEAR nucleus Energy STORED in the ________ (center) of an atom. Ex: nuclear bombs
GEOTHERMAL (HEAT) Earth Heat energy STORED within the _____. Ex: Volcanic eruptions, geysers
All forms of energy can be classified as Kinetic or potential. The two basic states of energy. So, what’s the difference?
POTENTIAL ENERGY 1) Potential energy is stored energy due to and object’s _____________ Position
POTENTIAL ENERGY gravitational 2) An object that is lifted from its position on Earth has __________ potential Energy which depends on ______ and mass height
POTENTIAL ENERGY more 3) Massive objects have _____ potential energy than less massive objects
POTENTIAL ENERGY more 4) An object at a higher elevation will have _____ potential energy than an object at a lower elevation
Do Now • Pass up procedure for your signed test • Take out Homework • Complete worksheet on Do Now desk
KINETIC ENERGY Motion Kinetic is energy of ___________
KINETIC ENERGY MASS SPEED 2) Kinetic depends on the _____ and the _______ of an object.
KINETIC ENERGY More 3) Faster objects have ____ kinetic energy than slower objects.
REVIEW QUESTONS: WHICH SKIIER HAS THE GREATEST KINETIC ENERGY? A B D C
WHICH SKIIER HAS THE GREATEST POTENTIAL ENERGY? A B D C
ENERGY TRANSFORMATIONS Do you remember the LAW OF CONSERVATION OF MASS AND ENERGY?
Law of Conservation of ENERGY: (same for mass) Can’t be made Mass/ NRG ____________ Mass/ NRG ______________ Mass/ Energy can only __________ Can’t be destroyed Change form!!!
DURING ENERGY CHANGES, IF ONE BODYIS LOSING ENERGY, THE OTHER IS _______ ENERGY: Gaining THE WAVE LOSES ENERGY: THE SAND GAINS ENERGY
DURING ENERGY CHANGES, IF ONE BODYIS LOSING ENERGY THE OTHER IS GAINING ENERGY: THE WAVE LOSES ENERGY: THE SAND GAINS ENERGY
DURING ENERGY CHANGES THE TOTAL ENERGY REMAINS THE SAME ENERGY ALWAYS FLOWS FROM HIGH TO LOW (source to sink)
THE ENERGY WILL FLOW FROM: THE FLAME TO THE FINGER
ENERGY WILL FLOW FROM ICE THE FINGER TO THE ICE
THE LIQUID LOSES ENERGY AS THE ICE GAINS ENERGY
WHEN WILL THE EXCHANGE OF ENERGY STOP? WHEN EQUILIBRIUM IS REACHED THE LIQUID AND THE ICE REACH THE SAME TEMPERATURE
UNUSABLE ENERGY: heat Very often during the energy transformation process, some ____ energy is produced due to friction. This is wasted energy and is lost to the environment.
ENERGY TRANSFORMATIONS Example: A television changes electrical NRG into light and sound NRG
Do Now • Turn to page 7 in your note packet • Take out “Energy HW”
Method’s of NRG transfer Convection Conduction • 1. __________________: Heated air rises through earth’s atmosphere. • 2. __________________: An ice cube melts when dropped into a glass of warm water. • 3. __________________: Light leaves the sun and 8 minutes later strikes earth. • 4. __________________: You burn you tongue eating hot pizza. • 5. __________________: Hot magma rises inside earth’s mantle, cool, and sinks. • 6. __________________: A microwave oven heats soup. • 7. __________________: A fireplace warming a room. Radiation Conduction Convection Radiation Convection
28 26 24 23 • A • 26 26 24 23 • B • 26 25 24 22