Notes on basic physics forces, forms of Energy, Energy conversions, Energy resources, and simple machines with video links

1. Physics 1 Energy PPT. by, Robin D. Seamon

6. EXAMPLE: Forces on a Shark Thrust Lift Drag : air/water resistance

7. Describe the force the weight lifter is exerting on the bar. Are the forces balanced or unbalanced? PRACTICE LINK PRACTICE Q’s

8. Hydraulic Lift simulation Activity 1 Quiz 2

17. ENERGY CONVERSIONS: (changing from one form to another) Elastic potential Energy Chemical energy of food you eat: atoms rearrange to make energy for you Energy pyramid Light E > chemical E > we eat it > to kinetic E as we move & live Examples Pendulum

18. ENERGY CONVERSION LAB Make a list of 15-20 gadgets. Denote the source of E and into what kind of E it converts Kinetic & sound E Electrical E Blender Light & thermal E Electrical E Light bulb Electrical E Chemical E Battery Light & sound E Electrical E Alarm clock DESTINATION SOURCE GADGET

19. ENERGY CONVERSION LAB Make a list of 15-20 gadgets. Denote the source of E and into what kind of E it converts

20. ENERGY CONVERSION LAB Make a list of 15-20 gadgets. Denote the source of E and into what kind of E it converts

21. ENERGY CONVERSION LAB Make a list of 15-20 gadgets. Denote the source of E and into what kind of E it converts

22. ENERGY CONVERSION LAB Make a list of 15-20 gadgets. Denote the source of E and into what kind of E it converts

23. ENERGY CONVERSION LAB 2 Choose one daily activity that you do. Trace the Energy back as far as you can go. Soccer ball moves (mechanical Energy) > Kicking a soccer ball (mechanical Energy) > muscles move forward (mechanical Energy) > Energy goes to my muscles from food I eat > (chemical Energy) > the bacon I ate has Energy from the plants the pig ate (chemical Energy) > the plant has Energy from the sun (photosynthesis/light Energy) > the sun gives off light Energy from nuclear fusion > nuclear fusion comes from the combining of hydrogen atoms to make helium…

28. Pulley : uses grooved wheels and a rope to raise, lower, or move a load Simple Machine: a tool that makes work easier

29. Lever : a stiff bar that rests on a middle support, used to lift or move loads. http://www.cool-science-projects.com/simple-machine-science-project.html

30. Wedge : has a slanted side that ends in a sharp edge. This tool concentrates the energy to that one edge/point

31. Wheel & axle: a wheel with a rod through its center that lifts or moves loads http://www.msnucleus.org/membership/html/k-6/as/technology/2/images/gear.gif

32. Inclined plane : is a slanted surface that helps move an object up

33. Screw: an inclined plane that is wrapped around a pole; hold things together or lift things up www.yourdictionary.com/screw

35. Energy Efficiency: Closed system : group of objects that only transfer E to each other. (not everything is a closed system) *In Conversion of E, some ALWAYS gets converted to thermal E (not lost!) Energy efficiency: comparison of the amount of E before conversion, with the amount after conversion

37. LAB: Energy Trace Pick a daily activity & trace it back to its source of E

38. Energy Resources

46. ELECTRICITY Activities LINK QUIZ

47. LAB ENERGY PRO’s & CON’s List the advantages & disadvantages of the following sources of Energy. Wind Geothermal Biomass water solar nuclear Fossil fuels DISADVANTAGE ADVANTAGE ENERGY TYPE

48. BBC Energy Links HOW STUFF WORKS: Telephone system Wii Radio Helicopters Toilets Microwaves LCD & Plasma tv Light bulbs Air & refrigeration Electricity 1 Electricity 2 Water Treatment Plants QUIZ