Energy Diagrams Energy Chains - Download as PowerPoint

Document Sample
Energy Diagrams Energy Chains - Download as PowerPoint Powered By Docstoc
					     Energy Diagrams
            &
      Energy Chains



Using Graphical Representations to Communicate
         the Energy Flow in a System.
Energy Diagrams

   Energy Chains are used to illustrate
   the flow of energy in a system.
   Energy Diagrams show the flow of
   energy in a small piece of an energy
   chain. The energy diagram is also
   much more quantitative.
Energy Diagrams
Let’s use a skidding car as our example.
Using Font Size

   The size of the font can signal the relative
   amount of energy in a specific form and
   how it changes over time.
Using Bar Graphs

   Bar graphs can show how energy flows in a
   system. Each bar represents a form of
   energy. The height of the bar signals the
   amount of energy at that time.
   In some cases a standard bar graph is
   used, but a composite bar graph can be
   used to illustrate the flow of energy.
Standard Bar Graph
Composite Bar Graph
Using Circle Graphs

   Circle graphs can be used to illustrate
   energy flow. Each form is a represented
   by a portion of the circle. Multiple circle
   graphs can illustrate how the amount of
   energy in each form changes over time.
Circle Graph
Constructing Energy
     Diagrams
Energy Diagram using Font Size changes



Total
ME

KE

GPE

        100cm   75    50      25 cm      0 cm
                cm    cm
      Energy Diagram using a Bar Graph




100        75      50        25          0 cm
cm         cm      cm        cm


GPE                 KE
 Energy Diagram using a Composite Bar Graph




  100      75      50        25      0 cm
  cm       cm      cm        cm


GPE               KE
Energy Diagram using a Circle Graph




 100          75        50            25   0 cm
 cm           cm        cm            cm

   GPE                KE
Energy Skate Park Simulation