Thursday, January 14 th, 2016 ENERGY, “STATES AND FORMS”

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Presentation transcript:

Thursday, January 14 th, 2016 ENERGY, “STATES AND FORMS”

Today’s Targets  I can define and explain how energy is conserved (#1)  I can mathematically and conceptually describe the two primary “states” of energy.(#2)  I can identify the transfer of energy among the 6+1 “Forms” of Energy (#3)  I can define the term Energy (#4)  I can make and convert measurements within the SI-system (#5)  I can track the flow of energy by developing an energy chain (#6)  I can use the Conservation of Energy and the mathematical definition of PE and KE to solve calculations questions about falling objects (#7)

Today’s Agenda  Warm-Up (KE, PE)  Energy Chains practice  More Practice PE and KE problems

Warm Up: A measure of… Units Kg Distance or Height (___) Time (t) m/s Acceleration due to gravity (___) Energy (___) Given: Formula: Subs: Ans: 8kg 5m/s A B D C E PositionPEKETotal A B C D E Mass (m) h Meters (m) Second (s) Velocity (v) m/s/s m/s 2 g E kg∙m 2 /s 2 or J v = 5m/s m = 8kg KE = ? KE = ½mv 2 KE = (4kg)(25m 2 /s 2 ) KE = 100J 100J 0J 100J 0J 100J 50J 25J 75J 25J Velocity at position B?

List, Define, and Provide an example for each of the 6+1 Forms of Energy  Nuclear – the energy found within the nucleus of the atom. (Sun –fusion)  Radiant – the energy that travels as electromagnetic waves (Light, Radio)  Thermal – the total kinetic energy of the particles that makeup an object. (warm ocean)  Chemical – the energy locked in the bonds between atoms (gasoline)  Mechanical – the energy of moving matter (wind blowing)  Electrical – the energy of flowing electrons (current traveling through wire)  Sound – the energy that travels as a compression wave through matter (Thunder)

Transformations Practice  Toaster Oven  Wood Burning Stove  Hairdryer  Wind Turbine  Nuclear Power Plant

KE and PE practice problems  See Smartchart