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ENERGY

ENERGY. Starter. Directions: Classify the following measurements as Force, momentum, Velocity, acceleration. 1. m/s squared 2. Newton 3. kg·m/s squared 4. m/s 5. kg·m/s. Review. 1. What are the 3 scenarios possible where no work is done?

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ENERGY

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  1. ENERGY

  2. Starter Directions: Classify the following measurements as Force, momentum, Velocity, acceleration. 1. m/s squared 2. Newton 3. kg·m/s squared 4. m/s 5. kg·m/s

  3. Review 1. What are the 3 scenarios possible where no work is done? 2. Which of the following are examples of work? • Carrying a stack of books • Lifting a pile of logs • Pushing down on a desk • Swinging a baseball bat

  4. Wordsplash • Make a wordsplash on ENERGY

  5. What is ENERGY? Energy is the ability to do _______ Work

  6. Work occurs when a _____ causes an object to _____ in the same direction as the force. force move

  7. FORMS OF ENERGY Both basic states of energy, Kinetic and potential, can exist in many forms!

  8. The total ________ energy of the particles in matter. (molecular motion) THERMAL (HEAT) Kinetic

  9. Heat energy STORED within the _____. Ex: Volcanic eruptions, geysers GEOTHERMAL (HEAT) Earth

  10. Energy STORED in chemical ____ that can be released. Ex: food, fossil fuels, battery acid CHEMICAL bonds

  11. Energy STORED in the ________ (center) of an atom. Ex: nuclear bombs NUCLEAR nucleus

  12. Energy with which ______ objects perform work. Ex: Wind, flowing water, using a hammer MECHANICAL moving

  13. A type of mechanical energy. It is the energy produced when objects ________. Ex: tuning fork, bell SOUND vibrate

  14. A form of _______ energy that moves in a ______. Ex: lamp, stars LIGHT radiant wave

  15. A form of energy produced by the ________ of ________ ELECTRICITY movement electrons

  16. All forms of energy that come from the ______. SOLAR ENERGY SUN

  17. Stored energy due to a change in the shape of an object. Ex: _______________ STORED MECHANICAL ENERGY: A stretched rubber band

  18. STORED MECHANICAL ENERGY:

  19. Do you remember the LAW OF CONSERVATION OF MASS AND ENERGY? ENERGY TRANSFORMATIONS

  20. 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!!!

  21. ENERGY TRANSFORMATIONS

  22. Energy Transfer worksheet Read and answer the questions on the worksheet entitles energy transformations

  23. Very often during the energy transformation process, some ____ energy is produced due to friction. This is wasted energy and is lost to the environment. UNUSABLE ENERGY: heat

  24. An energy resource that is ________________________________. What is a NON-RENEWABLE RESOURCE? Being used faster than Earth Produces it

  25. Examples: __________________ What is a NON-RENEWABLE RESOURCE? Fossil Fuels, minerals

  26. To make our non-renewable resources last longer we can _____________________________________________. What is a NON-RENEWABLE RESOURCE? Reduce, Reuse, & Recycle

  27. An energy resource that is _______________________________________. What is a RENEWABLE RESOURCE? Earth supplies faster than we use it “unlimited”

  28. Examples: _______________________________ What is a RENEWABLE RESOURCE? Solar, wind, biomass (trees etc..)

  29. A renewable resource produces less _________ (substance that can harm living things and/or the environment What is a RENEWABLE RESOURCE? pollution

  30. Example:

  31. Videos • Solar energy • http://science360.gov/obj/video/cb617b37-4eb5-4518-b44a-da0b7d0190e0 • Wind Energy • http://science360.gov/obj/video/de111fd3-5fb6-49ae-a02f-11558b417011

  32. Energy forms and Sources Complete the energy forms and sources handout

  33. All forms of energy can be classified as Kinetic or potential. The two basic states of energy. So, what’s the difference?

  34. 1) Potential energy is stored energy due to and object’s _____________ POTENTIAL ENERGY Position

  35. 2) An object that is lifted from its position on Earth has __________ potential Energy which depends on ______ and mass POTENTIAL ENERGY gravitational height

  36. 3) Massive objects have _____ potential energy than less massive objects POTENTIAL ENERGY more

  37. 4) An object at a higher elevation will have _____ potential energy than an object at a lower elevation POTENTIAL ENERGY more

  38. 3) Faster objects have ____ kinetic energy than slower objects. KINETIC ENERGY More

  39. Kinetic is energy of ___________ KINETIC ENERGY Motion

  40. 2) Kinetic depends on the _____ and the _______ of an object. KINETIC ENERGY MASS SPEED

  41. A Roller Coaster A roller coaster speeds along its track. It has kinetic energy because it is moving.

  42. A Roller Coaster As it slows to a stop at the top of a hill, it has potential energy because of where it is. It has the potential to move because it is above the ground and has somewhere to go.

  43. Formulas KE = 1/2 m v2 PE = mgh = Fwh

  44. Videos Energy and Power http://science360.gov/obj/video/c5be5456-2e39-49a7-8118-218868df89eb

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